diff --git a/firmware/applications/font.c b/firmware/applications/font.c
index 9801653..a79b055 100644
--- a/firmware/applications/font.c
+++ b/firmware/applications/font.c
@@ -7,6 +7,7 @@
 #include "lcd/allfonts.h"
 
 #include "filesystem/ff.h"
+#include "filesystem/select.h"
 #include "funk/nrf24l01p.h"
 #include "usb/usbmsc.h"
 
@@ -75,35 +76,22 @@ void f_init(void){
     lcdPrintln("Done.");
 };
 
-
-static FONT fonts[] = {
- &Font_7x8,
- &Font_Ubuntu18pt,
- &Font_Ubuntu29pt,
- &Font_Ubuntu36pt,
- &Font_Orbitron14pt,
- &Font_3x6,
- &Font_5x8,
- &Font_8x8,
- &Font_8x8Thin,
- &Font_Invaders
-};
-
+char fontname[15];
 
 void f_nick(void){
     static char ctr=0;
     char key;
-    signed char x=10;
-    signed char y=10;
+    static signed char x=10;
+    static signed char y=10;
     while (1) {
         lcdClear();
         lcdFill(255);
 
-        font=fonts[ctr%10];
-        DoString(x,y,nickname);
-//        lcdSafeSetPixel(x,y,1);
+        setExtFont(fontname);
 
-        font=&Font_7x8;
+        DoString(x,y,nickname);
+
+        setIntFont(&Font_7x8);
         lcdSetCrsr(50,50);
         lcdPrintInt(x);
         lcdPrint("x");
@@ -135,6 +123,23 @@ void f_nick(void){
     };
 };
 
+void f_font(void){
+
+    if( selectFile(fontname,"F0N") != 0){
+        lcdPrintln("No file selected.");
+        return;
+    };
+
+    lcdClear();
+    lcdPrintln(fontname);
+    setExtFont(fontname);
+    lcdPrintln("PUabc€");
+    setIntFont(&Font_7x8);
+    lcdPrintln("done.");
+    lcdDisplay();
+    while(!getInputRaw())delayms(10);
+};
+
 /***********************************************************************/
 
 void gotoISP(void) {
@@ -178,7 +183,7 @@ void msc_menu(void){
 const struct MENU_DEF menu_ISP =    {"Invoke ISP",  &gotoISP};
 const struct MENU_DEF menu_init =   {"F Init",   &f_init};
 const struct MENU_DEF menu_nick =    {"F Nick",   &f_nick};
-//const struct MENU_DEF menu_snd =    {"F Send",   &f_send};
+const struct MENU_DEF menu_font =    {"F sel",   &f_font};
 const struct MENU_DEF menu_mirror = {"Mirror",   &lcd_mirror};
 const struct MENU_DEF menu_invert = {"Invert",   &lcd_invert};
 const struct MENU_DEF menu_volt =   {"Akku",   &adc_check};
@@ -188,7 +193,7 @@ const struct MENU_DEF menu_nop =    {"---",   NULL};
 static menuentry menu[] = {
     &menu_init,
     &menu_nick,
-//    &menu_snd,
+    &menu_font,
     &menu_nop,
     &menu_mirror,
     &menu_invert,
diff --git a/firmware/applications/funk.c b/firmware/applications/funk.c
index 0160188..d592dbe 100644
--- a/firmware/applications/funk.c
+++ b/firmware/applications/funk.c
@@ -227,7 +227,7 @@ void main_funk(void) {
     backlightInit();
     font=&Font_7x8;
 
-    openbeaconSetup(0x5ec);
+    openbeaconSetup();
     while (1) {
         lcdFill(0); // clear display buffer
         lcdDisplay();
diff --git a/firmware/applications/vcard.c b/firmware/applications/vcard.c
index 6cbda10..a5bf28a 100644
--- a/firmware/applications/vcard.c
+++ b/firmware/applications/vcard.c
@@ -58,7 +58,6 @@ int receiveKey(uint8_t type, uint8_t *x, uint8_t *y)
     uint8_t n;
     
     n = nrf_rcv_pkt_time(1000, 32, buf);
-    lcdPrint("pkt:"); lcdPrintInt(n);lcdPrintln(""); lcdRefresh();
     if( n == 32 && buf[0] == type && buf[1] == 'X' ){
         for(int i=0; i<NUMWORDS*4; i++)
             x[i] = buf[i+2];
@@ -116,7 +115,7 @@ int sendKeys(void)
     char key;
     while( !done ){
         lcdClear();
-        lcdPrintln("Sending key");lcdRefresh();
+        lcdPrintln("Sending PUBKEY");lcdRefresh();
         sendPublicKey(Px,Py);
         sendMac();
         lcdPrintln("Done");
@@ -146,7 +145,7 @@ int receiveKeys(uint8_t *px, uint8_t *py, uint8_t *mac)
     char key;
     while( !done ){
         lcdClear();
-        lcdPrintln("Receiving key");
+        lcdPrintln("Recv. PUBKEY");
         lcdPrintln("Down=Abort");
         lcdRefresh();
         key = getInput();
@@ -156,11 +155,11 @@ int receiveKeys(uint8_t *px, uint8_t *py, uint8_t *mac)
         }
         if( receivePublicKey(px,py) )
             continue;
-        lcdPrintln("Got PUBKEY");
-        lcdRefresh(); 
         if( receiveMac(mac) )
             continue;
-        lcdPrintln("Done");
+        lcdClear();
+        lcdPrintln("Got PUBKEY"); lcdRefresh(); 
+        lcdPrintln("Hash:");
         lcdPrintln("Right=OK");
         lcdPrintln("Left=Retry");
         lcdPrintln("Down=Abort");
@@ -203,27 +202,16 @@ void receiveFile(void)
         }
         if( receiveR(rx,ry) )
             continue;
-        lcdPrintln("Got R");
+        lcdPrintln("Creating key");
         lcdRefresh();
         ECIES_decryptkeygen(rx, ry, k1, k2, Priv);
-        #if 0
-        lcdClear();
-        for(int i=0; i<16; i++){
-            lcdPrintCharHex(k1[i]);
-            if((i+1)%4==0)
-                lcdPrintln("");
-        }
-        lcdRefresh();
-        #else
-        uint32_t k[4] = {0xffff,0xffff,0xffff,0xffff};
-        if( filetransfer_receive(mac,(uint32_t*)k) )
+        if( filetransfer_receive(mac,(uint32_t*)k1) < 0 )
             continue;
-        lcdPrintln("Done");
         lcdPrintln("Right=OK");
         lcdPrintln("Left=Retry");
         lcdPrintln("Down=Abort");
         lcdRefresh();
-        #endif
+
         while(1){
             key = getInput();
             delayms(20);
@@ -237,7 +225,6 @@ void receiveFile(void)
             }
         }
     }
-
 }
 
 void sendFile(char *filename)
@@ -252,31 +239,20 @@ void sendFile(char *filename)
     uint8_t key;
 
     uint8_t k1[16], k2[16], rx[4*NUMWORDS], ry[4*NUMWORDS];
+    
+    lcdClear();
+    lcdPrintln("Creating key"); lcdRefresh();
     ECIES_encyptkeygen(px, py, k1, k2, rx, ry);
     
     while( !done ){
-        lcdClear();
         lcdPrintln("Sending file");lcdRefresh();
         sendR(rx,ry);
-        lcdPrintln("Sent R");
-        lcdRefresh();
-        #if 0
-        lcdClear();
-        for(int i=0; i<16; i++){
-            lcdPrintCharHex(k1[i]);
-            if((i+1)%4==0)
-                lcdPrintln("");
-        }
-        #else
         delayms(3000);
-        uint32_t k[4] = {0xffff,0xffff,0xffff,0xffff};
-        filetransfer_send((uint8_t*)filename, 0, mac, (uint32_t*)k);
+        filetransfer_send((uint8_t*)filename, 0, mac, (uint32_t*)k1);
         lcdPrintln("Done");
         lcdPrintln("Right=OK");
         lcdPrintln("Left=Retry");
-        #endif
         lcdRefresh();
-
         while(1){
             key = getInput();
             delayms(20);
@@ -286,7 +262,8 @@ void sendFile(char *filename)
                 done = 1;
                 break;
             }
-        }
+        } 
+        lcdClear();
     }
 }
 
@@ -307,45 +284,25 @@ void main_vcard(void) {
     while (1) {
         key= getInput();
         delayms(20);
-
         // Easy flashing
         if(key==BTN_LEFT){
             DoString(0,8,"Enter ISP!");
             lcdDisplay();
             ISPandReset();
         }else if(key==BTN_UP){
-            //lcdClear();
-            //lcdPrintln("Generating...");
-            //lcdRefresh();
             char file[13];
             selectFile(file,"TXT");
             sendFile(file);
-            //uint8_t k1[16], k2[16], Rx[4*NUMWORDS], Ry[4*NUMWORDS];
-            //ECIES_encyptkeygen("1c56d302cf642a8e1ba4b48cc4fbe2845ee32dce7",
-            //                "45f46eb303edf2e62f74bd68368d979e265ee3c03",
-            //                k1, k2, Rx, Ry);
-            //nrf_snd_pkt_crc(30, k1); 
-            lcdPrintln("Done");
-            lcdRefresh();
         }else if(key==BTN_DOWN){
-            lcdClear();
-            lcdPrintln("Generating...");
-            lcdRefresh();
             receiveFile();
-            //uint8_t k1[16], k2[16], Rx[4*NUMWORDS], Ry[4*NUMWORDS];
-            //ECIES_encyptkeygen("1c56d302cf642a8e1ba4b48cc4fbe2845ee32dce7",
-            //                "45f46eb303edf2e62f74bd68368d979e265ee3c03",
-            //                k1, k2, Rx, Ry);
-            //nrf_snd_pkt_crc(30, k1); 
-            lcdPrintln("Done");
-            lcdRefresh();
         }else if(key==BTN_RIGHT){
+            DoString(0,8,"MSC Enabled.");
+            lcdDisplay();
+            usbMSCInit();
+            while(!getInputRaw())delayms(10);
+            DoString(0,16,"MSC Disabled.");
+            usbMSCOff();
         }
-
-                //encryption_decryption_demo("This is encrypted",
-        //                "1c56d302cf642a8e1ba4b48cc4fbe2845ee32dce7", 
-        //                "45f46eb303edf2e62f74bd68368d979e265ee3c03",
-        //                "0e10e787036941e6c78daf8a0e8e1dbfac68e26d2");
     }
 }
 
diff --git a/firmware/basic/basic.c b/firmware/basic/basic.c
index d60bff0..819de91 100644
--- a/firmware/basic/basic.c
+++ b/firmware/basic/basic.c
@@ -126,12 +126,7 @@ void rbInit() {
     gpioIntEnable(RB_BUSINT);
     // add this to catch interrupt:
     /*
-	void PIOINT3_IRQHandler(void) {    
-	    if (gpioIntStatus(RB_BUSINT)) {
-		// do something
-		gpioIntClear(RB_BUSINT);
-	    }
-	}
+
     */
 
     //nrf_init();
@@ -139,3 +134,17 @@ void rbInit() {
     font=&Font_7x8;
     ECIES_setup();
 }
+#define WEAK_ALIAS(f) __attribute__ ((weak, alias (#f)));
+void interrupt_undefined(void) {
+}
+
+void businterrupt(void)       WEAK_ALIAS(interrupt_undefined);
+
+
+void PIOINT3_IRQHandler(void) {    
+    if (gpioIntStatus(RB_BUSINT)) {
+        gpioIntClear(RB_BUSINT);
+        businterrupt();
+    }
+}
+
diff --git a/firmware/basic/basic.h b/firmware/basic/basic.h
index f754f18..8c6f5d0 100644
--- a/firmware/basic/basic.h
+++ b/firmware/basic/basic.h
@@ -172,5 +172,4 @@ struct MENU {
 
 
 void handleMenu(const struct MENU *the_menu);
-
 #endif
diff --git a/firmware/basic/uuid.c b/firmware/basic/uuid.c
index 1758ddc..0b28f5d 100644
--- a/firmware/basic/uuid.c
+++ b/firmware/basic/uuid.c
@@ -1,14 +1,24 @@
 #include "lpc134x.h"
 #include "sysdefs.h"
 #include "basic.h"
+#include "xxtea.h"
 
 #include "core/iap/iap.h"
 
 uint32_t GetUUID32(void){
     IAP_return_t iap_return;
     iap_return = iapReadSerialNumber();
-
-    return iap_return.Result[1];
+    if (iap_return.ReturnCode == 0){
+        uint32_t block[4];
+        uint32_t k[4] = {1,2,3,4};
+        block[0] = iap_return.Result[0];
+        block[1] = iap_return.Result[1];
+        block[2] = iap_return.Result[2];
+        block[3] = iap_return.Result[3];
+        xxtea_encode_words(block, 4, k);
+        return block[0];
+    }
+    return 0;
 };
 
 // What OpenBeacon used. Do we want this?
diff --git a/firmware/basic/uuid.h b/firmware/basic/uuid.h
new file mode 100644
index 0000000..d64d92b
--- /dev/null
+++ b/firmware/basic/uuid.h
@@ -0,0 +1,8 @@
+#ifndef _UUID_H_
+#define _UUID_H_
+#include <stdint.h>
+
+uint32_t GetUUID32(void);
+
+#endif
+
diff --git a/firmware/funk/filetransfer.c b/firmware/funk/filetransfer.c
index aa8618a..ffa4b94 100644
--- a/firmware/funk/filetransfer.c
+++ b/firmware/funk/filetransfer.c
@@ -17,6 +17,7 @@ int filetransfer_send(uint8_t *filename, uint16_t size,
     FRESULT res;
     UINT readbytes;
 
+
     if( size > MAXSIZE )
         return 1;           //File to big
  
@@ -25,6 +26,9 @@ int filetransfer_send(uint8_t *filename, uint16_t size,
         return res;
 
     //res = f_read(&file, (char *)buf, size, &readbytes);
+    for(uint16_t i=0; i<MAXSIZE; i++)
+        buf[i] = 0;
+
     res = f_read(&file, (char *)buf, MAXSIZE, &readbytes);
     size = readbytes;
 
@@ -59,6 +63,7 @@ int filetransfer_receive(uint8_t *mac, uint32_t const k[4])
 {
     uint8_t buf[MAXSIZE+1];
     uint16_t size;
+    uint8_t n;
 
     UINT written = 0;
     FIL file;
@@ -69,7 +74,9 @@ int filetransfer_receive(uint8_t *mac, uint32_t const k[4])
     uint8_t metadata[32];
 
     //nrf_set_rx_mac(0, 32, 5, mac);
-    nrf_rcv_pkt_time_encr(3000, 32, metadata, k);
+    n = nrf_rcv_pkt_time_encr(3000, 32, metadata, k);
+    if( n != 32 )
+        return 1;       //timeout
     //nrf_set_rx_mac(0, 32, 5, macbuf);
     //lcdPrintln("got meta"); lcdRefresh();
     metadata[19] = 0; //enforce termination
@@ -79,7 +86,7 @@ int filetransfer_receive(uint8_t *mac, uint32_t const k[4])
     if( size > MAXSIZE ) return 1; //file to big
     //if(fileexists(metadata)) return 1;   //file already exists
     
-    lcdPrint("open"); lcdPrintln((const char*)metadata); lcdRefresh();
+    //lcdPrint("open"); lcdPrintln((const char*)metadata); lcdRefresh();
     res = f_open(&file, (const char*)metadata, FA_OPEN_ALWAYS|FA_WRITE);
 
     //lcdPrintln("file opened"); lcdRefresh();
@@ -90,9 +97,18 @@ int filetransfer_receive(uint8_t *mac, uint32_t const k[4])
     uint16_t wordcount = (size+3)/4;
     
     //nrf_set_rx_mac(0, 32, 5, mac);
-    lcdPrintln("get file"); lcdRefresh();
-    rftransfer_receive(buf, wordcount*4, 1000);
-    lcdPrintln("got file"); lcdRefresh();
+    //lcdPrintln("get file"); lcdRefresh();
+    int fres = rftransfer_receive(buf, wordcount*4, 1000);
+    if( fres == -1 ){
+        lcdPrintln("checksum wrong");
+    }else if( fres == -2 ){
+        lcdPrintln("timeout");
+    }else{
+        //lcdPrintln("got file");
+    }
+    lcdRefresh();
+    if( fres < 0 )
+        return;
     //nrf_set_rx_mac(0, 32, 5, macbuf);
 
     xxtea_decode_words((uint32_t *)buf, wordcount, k);
@@ -103,6 +119,8 @@ int filetransfer_receive(uint8_t *mac, uint32_t const k[4])
         return res;
     if( written != size )
         return 1;           //error while writing
+    lcdClear();
+    lcdPrintln("Received"); lcdPrintln((const char*)metadata); lcdRefresh();
 
     return 0;
 }
diff --git a/firmware/funk/openbeacon.c b/firmware/funk/openbeacon.c
index 2b919bf..ab90436 100644
--- a/firmware/funk/openbeacon.c
+++ b/firmware/funk/openbeacon.c
@@ -4,6 +4,7 @@
 #include "basic/byteorder.h"
 #include "sysdefs.h"
 #include "filesystem/ff.h"
+#include "basic/uuid.h"
 
 //const uint32_t key[4] = {0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF};
 const uint32_t openbeaconkey[4] = { 0xB4595344,0xD3E119B6,0xA814D0EC,0xEFF5A24E };
@@ -59,9 +60,9 @@ void openbeaconRead()
 }
 
 
-void openbeaconSetup(uint32_t id)
+void openbeaconSetup(void)
 {
-    oid = id;
+    oid = GetUUID32();
     strength = 0;
     openbeaconRead();
     openbeaconSaveBlock();
diff --git a/firmware/funk/rftransfer.c b/firmware/funk/rftransfer.c
index 335b13a..7c52423 100644
--- a/firmware/funk/rftransfer.c
+++ b/firmware/funk/rftransfer.c
@@ -16,7 +16,6 @@ void rftransfer_send(uint16_t size, uint8_t *data)
     buf[3] = rand >> 8;
     buf[4] = rand & 0xFF;
 
-    //nrf_snd_pkt_crc(5,buf);     //setup packet
     nrf_snd_pkt_crc(32,buf);     //setup packet
     delayms(20);
     uint16_t index = 0;
@@ -29,7 +28,7 @@ void rftransfer_send(uint16_t size, uint8_t *data)
         buf[2] = index & 0xFF;
         buf[3] = rand >> 8;
         buf[4] = rand & 0xFF;
-        for(i=5; i<MAXPACKET && size>0; i++,size--){
+        for(i=5; i<MAXPACKET-2 && size>0; i++,size--){
             buf[i] = *data++;
         }
         index++;
@@ -42,12 +41,11 @@ void rftransfer_send(uint16_t size, uint8_t *data)
     buf[2] = crc & 0xFF;
     buf[3] = rand >> 8;
     buf[4] = rand & 0xFF;
-    //nrf_snd_pkt_crc(5,buf);     //crc packet
     nrf_snd_pkt_crc(32,buf);     //setup packet
     delayms(20);
 }
 
-uint16_t rftransfer_receive(uint8_t *buffer, uint16_t maxlen, uint16_t timeout)
+int16_t rftransfer_receive(uint8_t *buffer, uint16_t maxlen, uint16_t timeout)
 {
     uint8_t buf[MAXPACKET];
     uint8_t state = 0;
@@ -56,7 +54,7 @@ uint16_t rftransfer_receive(uint8_t *buffer, uint16_t maxlen, uint16_t timeout)
     unsigned int currentTick = systickGetTicks();
     unsigned int startTick = currentTick;
     
-    while(currentTick < (startTick+timeout) ){//this fails if either overflows
+    while(systickGetTicks() < (startTick+timeout) ){//this fails if either overflows
         n = nrf_rcv_pkt_time(1000, MAXPACKET, buf);
         switch(state){
             case 0:
@@ -66,45 +64,45 @@ uint16_t rftransfer_receive(uint8_t *buffer, uint16_t maxlen, uint16_t timeout)
                     seq = 0;
                     pos = 0;
                     if( size <= maxlen ){
-                        lcdClear();
-                        lcdPrintln("got l"); lcdRefresh();
+                        //lcdClear();
+                        //lcdPrint("got l="); lcdPrintInt(size);
+                        //lcdPrintln(""); lcdRefresh();
                         state = 1;
                     }
                 }
             break;
             case 1:
                 if( n == 32 && buf[0] == 'D' && ((buf[3]<<8)|buf[4])==rand ){
-                    lcdPrint("got d"); lcdRefresh();
+                    //lcdPrint("got d"); lcdRefresh();
                     if( seq == ((buf[1]<<8)|buf[2]) ){
-                        lcdPrintln(" in seq"); lcdRefresh();
-                        //if( (pos + n - 5)<maxlen ){
-                            //for(i=5; i<n; i++,pos++){
-                            for(i=5; i<n && pos<size; i++,pos++){
+                        //lcdPrintln(" in seq"); lcdRefresh();
+                            for(i=5; i<n-2 && pos<size; i++,pos++){
                                 buffer[pos] = buf[i];
                             }
                             seq++;
-                        //}
                     }
                 }
                 if( pos == size ){
-                    lcdPrintln("got all"); lcdRefresh();
+                    //lcdPrintln("got all"); lcdRefresh();
                     crc = crc16(buffer, size);
                     state = 2;
                 }
             break;
             case 2:
                 if( n == 32 && buf[0] == 'C' && ((buf[3]<<8)|buf[4])==rand){
-                    lcdPrint("got crc"); lcdRefresh();
+                    //lcdPrint("got crc"); lcdRefresh();
                     if( crc == ((buf[1]<<8)|buf[2]) ){
-                        lcdPrintln(" ok"); lcdRefresh();
+                        //lcdPrintln(" ok"); lcdRefresh();
                         return size;
                     }else{
-                        state = 0;
+                        //lcdPrintln(" nok"); lcdRefresh();
+                        return -1;
                     }
                 }
             break;
         };
     }
-    return 0;
+    //lcdPrintln("Timeout"); lcdRefresh();
+    return -2;
 }
 
diff --git a/firmware/funk/rftransfer.h b/firmware/funk/rftransfer.h
index c616e77..0f9217c 100644
--- a/firmware/funk/rftransfer.h
+++ b/firmware/funk/rftransfer.h
@@ -3,7 +3,7 @@
 #include <stdint.h>
 
 void rftransfer_send(uint16_t size, uint8_t *data);
-uint16_t rftransfer_receive(uint8_t *buffer, uint16_t maxlen, uint16_t timeout);
+int16_t rftransfer_receive(uint8_t *buffer, uint16_t maxlen, uint16_t timeout);
 
 
 #endif
diff --git a/firmware/lcd/decoder.c b/firmware/lcd/decoder.c
index d4ff7b8..7073ee4 100644
--- a/firmware/lcd/decoder.c
+++ b/firmware/lcd/decoder.c
@@ -1,9 +1,6 @@
 #include <fonts.h>
 #include <render.h>
 
-#define MAXCHR (30*20)
-static uint8_t buf[MAXCHR];
-
 	// Local function: Get next nibble.
 	int ctr=0;  // offset for next nibble
 	int hilo=0; // 0= high nibble next, 1=low nibble next
@@ -15,7 +12,11 @@ static uint8_t buf[MAXCHR];
 			ctr++;
 		hilo=1-hilo;
 		if(hilo==1){
-			byte=data[ctr];
+            if(efont.type==FONT_EXTERNAL){
+                byte=_getFontData(GET_DATA,0);
+            }else{
+                byte=data[ctr];
+            };
 			val=byte>>4;
 		}else{
 			val=byte&0x0f;
@@ -44,7 +45,7 @@ uint8_t * pk_decode(const uint8_t * ldata,int * len){
 	int length=*len;      // Length of character bytestream
 	int height;           // Height of character in bytes
 	int hoff;             // bit position for non-integer heights
-	uint8_t * bufptr=buf; // Output buffer for decoded character
+	uint8_t * bufptr=charBuf; // Output buffer for decoded character
 
 	height=(font->u8Height-1)/8+1;
 	hoff=font->u8Height%8;
@@ -55,10 +56,17 @@ uint8_t * pk_decode(const uint8_t * ldata,int * len){
 	int pos=0;    // Decoder internal: current bit position (0..7)
 	int nyb;      // Decoder internal: current nibble / value
 
-	if(data[ctr]>>4 == 14){ // Char starts with 1-bits. 
-		gnn();
-		curbit=1;
-	};
+    if(efont.type==FONT_EXTERNAL){
+        if(_getFontData(PEEK_DATA,0)>>4 == 14){ // Char starts with 1-bits. 
+            gnn();
+            curbit=1;
+        };
+    }else{
+        if(data[ctr]>>4 == 14){ // Char starts with 1-bits. 
+            gnn();
+            curbit=1;
+        };
+    };
 
 	while(ctr<length){ /* Iterate the whole input stream */
 
@@ -89,14 +97,14 @@ uint8_t * pk_decode(const uint8_t * ldata,int * len){
 				*bufptr|=1<<(7-pos);
 			};
 			pos++;
-			if(((bufptr-buf)%height)==(height-1) && (pos==hoff)){
+			if(((bufptr-charBuf)%height)==(height-1) && (pos==hoff)){
 				// Finish incomplete last byte per column
 				pos=8;
 			};
 
 			if(pos==8){
 				bufptr++;
-				if((bufptr-buf)%height==0){ // End of column?
+				if((bufptr-charBuf)%height==0){ // End of column?
 					while(repeat>0){
 						for(int y=0;y<height;y++){
 							bufptr[0]=bufptr[-height];
@@ -111,6 +119,6 @@ uint8_t * pk_decode(const uint8_t * ldata,int * len){
 		curbit=1-curbit;
 	};
 		
-	*len=(bufptr-buf)/height; // return size of output buffer.
-	return buf;
+	*len=(bufptr-charBuf)/height; // return size of output buffer.
+	return charBuf;
 };
diff --git a/firmware/lcd/fonts.h b/firmware/lcd/fonts.h
index e80735c..c1b0146 100644
--- a/firmware/lcd/fonts.h
+++ b/firmware/lcd/fonts.h
@@ -20,17 +20,19 @@ struct FONT_DEF {
     const uint16_t *charExtra;      /* Pointer to array of extra char info  */
 };
 
+struct EXTFONT {
+    char type; // 0: none, 1: static, 2: loaded
+    char name[13];
+    struct FONT_DEF def;
+};
+
 typedef const struct FONT_DEF * FONT;
 
-/* interesting / exported stuff */
-
-#define FONT_DIR_LTR  0
-#define FONT_DIR_RTL  1
-// Not implemented
-// #define FONT_DIR_UP   2
-// #define FONT_DIR_DOWN 3
+#define FONT_DEFAULT 0
+#define FONT_INTERNAL 1
+#define FONT_EXTERNAL 2
 
 extern const struct FONT_DEF * font;
-extern char font_direction;
+extern struct EXTFONT efont;
 
 #endif
diff --git a/firmware/lcd/render.c b/firmware/lcd/render.c
index ea9743b..71a210a 100644
--- a/firmware/lcd/render.c
+++ b/firmware/lcd/render.c
@@ -1,16 +1,193 @@
+#include <string.h>
+
 #include <sysdefs.h>
 #include <render.h>
 #include <decoder.h>
 #include <fonts.h>
+#include "basic/basic.h"
+#include "fonts/smallfonts.h"
+
+#include "filesystem/ff.h"
 
 /* Global Variables */
 const struct FONT_DEF * font = NULL;
-char font_direction = FONT_DIR_LTR;
+
+struct EXTFONT efont;
+
+FIL file; /* current font file */
 
 /* Exported Functions */
 
+void setIntFont(const struct FONT_DEF * font){
+    memcpy(&efont.def,font,sizeof(struct FONT_DEF));
+    efont.type=FONT_INTERNAL;
+    font=NULL;
+};
+
+void setExtFont(const char *fname){
+    if(strlen(fname)>8+4)
+        return;
+    strcpy(efont.name,fname);
+//    memcpy(efont.name+strlen(fname),".f0n",5);
+
+    efont.type=FONT_EXTERNAL;
+    font=NULL;
+};
+
+
+int _getFontData(int type, int offset){
+    UINT readbytes;
+    UINT res;
+    static uint16_t extras;
+    static uint16_t character;
+    static const void * ptr;
+
+    if(efont.type == FONT_EXTERNAL){
+
+    if (type == START_FONT){
+        res = f_read(&file, &efont.def.u8Width, sizeof(uint8_t), &readbytes);
+        res = f_read(&file, &efont.def.u8Height, sizeof(uint8_t), &readbytes);
+        res = f_read(&file, &efont.def.u8FirstChar, sizeof(uint8_t), &readbytes);
+        res = f_read(&file, &efont.def.u8LastChar, sizeof(uint8_t), &readbytes);
+        res = f_read(&file, &extras, sizeof(uint16_t), &readbytes);
+        return 0;
+    };
+    if (type == SEEK_EXTRAS){
+        f_lseek(&file,6);
+        return 0;
+    };
+    if(type == GET_EXTRAS){
+        uint16_t word;
+        res = f_read(&file, &word, sizeof(uint16_t), &readbytes);
+        return word;
+    };
+    if (type == SEEK_WIDTH){
+        f_lseek(&file,6+(extras*sizeof(uint16_t)));
+        return 0;
+    };
+    if(type == GET_WIDTH || type == GET_DATA){
+        uint8_t width;
+        res = f_read(&file, &width, sizeof(uint8_t), &readbytes);
+        return width;
+    };
+    if(type == SEEK_DATA){
+        character=offset;
+        f_lseek(&file,6+
+                (extras*sizeof(uint16_t))+
+                ((extras+font->u8LastChar-font->u8FirstChar)*sizeof(uint8_t))+
+                (offset*sizeof(uint8_t))
+                );
+        return 0;
+    };
+    if(type == PEEK_DATA){
+        uint8_t width;
+        res = f_read(&file, &width, sizeof(uint8_t), &readbytes);
+        f_lseek(&file,6+
+                (extras*sizeof(uint16_t))+
+                ((extras+font->u8LastChar-font->u8FirstChar)*sizeof(uint8_t))+
+                (character*sizeof(uint8_t))
+                );
+        return width;
+    };
+#ifdef NOTYET
+    }else{ // efont.type==FONT_INTERNAL
+
+        if (type == START_FONT){
+            memcpy(&efont.def,font,sizeof(struct FONT_DEF));
+            return 0;
+        };
+        if (type == SEEK_EXTRAS){
+            ptr=efont.def.charExtra;
+            return 0;
+        };
+        if(type == GET_EXTRAS){
+            uint16_t word;
+            word=*(uint16_t*)ptr;
+            ptr=((uint16_t*)ptr)+1;
+            return word;
+        };
+        if (type == SEEK_WIDTH){
+            ptr=efont.def.charInfo;
+            return 0;
+        };
+        if(type == GET_WIDTH || type == GET_DATA){
+            uint8_t width;
+            width=*(uint8_t*)ptr;
+            ptr=((uint8_t*)ptr)+1;
+            return width;
+        };
+        if(type == SEEK_DATA){
+            if(offset==REPEAT_LAST_CHARACTER)
+                offset=character;
+            else
+                character=offset;
+
+            ptr=efont.def.au8FontTable;
+            return 0;
+        };
+#endif
+    };
+
+    /* NOTREACHED */
+    return 0;
+};
+
+int _getIndex(int c){
+#define ERRCHR (font->u8FirstChar+1)
+    /* Does this font provide this character? */
+    if(c<font->u8FirstChar)
+        c=ERRCHR;
+    if(c>font->u8LastChar && efont.type!=FONT_EXTERNAL && font->charExtra == NULL)
+        c=ERRCHR;
+
+    if(c>font->u8LastChar && (efont.type==FONT_EXTERNAL || font->charExtra != NULL)){
+        if(efont.type==FONT_EXTERNAL){
+            _getFontData(SEEK_EXTRAS,0);
+            int cc=0;
+            int cache;
+            while( (cache=_getFontData(GET_EXTRAS,0)) < c)
+                cc++;
+            if( cache > c)
+                c=ERRCHR;
+            else
+                c=font->u8LastChar+cc+1;
+        }else{
+            int cc=0;
+            while( font->charExtra[cc] < c)
+                cc++;
+            if(font->charExtra[cc] > c)
+                c=ERRCHR;
+            else
+                c=font->u8LastChar+cc+1;
+        };
+    };
+    c-=font->u8FirstChar;
+    return c;
+};
+
+uint8_t charBuf[MAXCHR];
+
 int DoChar(int sx, int sy, int c){
 
+//    font=NULL;
+    if(font==NULL){
+        if(efont.type==FONT_INTERNAL){
+            font=&efont.def;
+        }else if (efont.type==FONT_EXTERNAL){
+            UINT res;
+            res=f_open(&file, efont.name, FA_OPEN_EXISTING|FA_READ);
+            if(res){
+                efont.type=0;
+                font=&Font_7x8;
+            }else{
+                _getFontData(START_FONT,0);
+                font=&efont.def;
+            };
+        }else{
+            font=&Font_7x8;
+        };
+    };
+
 	/* how many bytes is it high? */
 	char height=(font->u8Height-1)/8+1;
     char hoff=(8-(font->u8Height%8))%8;
@@ -18,49 +195,76 @@ int DoChar(int sx, int sy, int c){
 	const uint8_t * data;
     int width,preblank=0,postblank=0; 
     do { /* Get Character data */
-        /* Does this font provide this character? */
-        if(c<font->u8FirstChar)
-            c=font->u8FirstChar+1; // error
-        if(c>font->u8LastChar && font->charExtra == NULL)
-            c=font->u8FirstChar+1; // error
-
-        if(c>font->u8LastChar && font->charExtra != NULL){
-            int cc=0;
-            while( font->charExtra[cc] < c)
-                cc++;
-            if(font->charExtra[cc] > c)
-                c=font->u8FirstChar+1; // error
-            else
-                c=font->u8LastChar+cc+1;
-        };
+        /* Get intex into character list */
+        c=_getIndex(c);
 
         /* starting offset into character source data */
         int toff=0;
 
         if(font->u8Width==0){
-            for(int y=0;y<c-font->u8FirstChar;y++)
-                toff+=font->charInfo[y].widthBits;
-            width=font->charInfo[c-font->u8FirstChar].widthBits;
+            if(efont.type == FONT_EXTERNAL){
+                _getFontData(SEEK_WIDTH,0);
+                for(int y=0;y<c;y++)
+                    toff+=_getFontData(GET_WIDTH,0);
+                width=_getFontData(GET_WIDTH,0);
 
-            toff*=height;
-            data=&font->au8FontTable[toff];
+                _getFontData(SEEK_DATA,toff);
+                UINT res;
+                UINT readbytes;
+                res = f_read(&file, charBuf, width*height, &readbytes);
+                if(res != FR_OK || readbytes<width*height)
+                    return sx;
+                data=charBuf;
+            }else{
+                for(int y=0;y<c;y++)
+                    toff+=font->charInfo[y].widthBits;
+                width=font->charInfo[c].widthBits;
+
+                toff*=height;
+                data=&font->au8FontTable[toff];
+            };
             postblank=1;
         }else if(font->u8Width==1){ // NEW CODE
-            // Find offset and length for our character
-            for(int y=0;y<c-font->u8FirstChar;y++)
-                toff+=font->charInfo[y].widthBits;
-            width=font->charInfo[c-font->u8FirstChar].widthBits;
-
-            if(font->au8FontTable[toff]>>4 == 15){ // It's a raw character!
-                preblank = font->au8FontTable[toff+1];
-                postblank= font->au8FontTable[toff+2];
-                data=&font->au8FontTable[toff+3];
-                width=(width-3/height);
+            if(efont.type == FONT_EXTERNAL){
+                _getFontData(SEEK_WIDTH,0);
+                for(int y=0;y<c;y++)
+                    toff+=_getFontData(GET_WIDTH,0);
+                width=_getFontData(GET_WIDTH,0);
+                _getFontData(SEEK_DATA,toff);
+                UINT res;
+                UINT readbytes;
+                uint8_t testbyte;
+                res = f_read(&file, &testbyte, sizeof(uint8_t), &readbytes);
+                if(testbyte>>4 ==15){
+                    res = f_read(&file, &preblank, sizeof(uint8_t), &readbytes);
+                    res = f_read(&file, &postblank, sizeof(uint8_t), &readbytes);
+                    width-=3;
+                    width/=height;
+                    res = f_read(&file, charBuf, width*height, &readbytes);
+                    if(res != FR_OK || readbytes<width*height)
+                        return sx;
+                    data=charBuf;
+                }else{
+                    _getFontData(SEEK_DATA,toff);
+                    data=pk_decode(NULL,&width); // Hackety-hack
+                };
             }else{
-                data=pk_decode(&font->au8FontTable[toff],&width);
-            }
+                // Find offset and length for our character
+                for(int y=0;y<c;y++)
+                    toff+=font->charInfo[y].widthBits;
+                width=font->charInfo[c].widthBits;
+                if(font->au8FontTable[toff]>>4 == 15){ // It's a raw character!
+                    preblank = font->au8FontTable[toff+1];
+                    postblank= font->au8FontTable[toff+2];
+                    data=&font->au8FontTable[toff+3];
+                    width=(width-3/height);
+                }else{
+                    data=pk_decode(&font->au8FontTable[toff],&width);
+                }
+            };
+
         }else{
-            toff=(c-font->u8FirstChar)*font->u8Width*height;
+            toff=(c)*font->u8Width*height;
             width=font->u8Width;
             data=&font->au8FontTable[toff];
         };
diff --git a/firmware/lcd/render.h b/firmware/lcd/render.h
index 563c6a0..eaa69ef 100644
--- a/firmware/lcd/render.h
+++ b/firmware/lcd/render.h
@@ -2,6 +2,7 @@
 #define __RENDER_H_
 
 #include "display.h"
+#include "fonts.h"
 
 /*
 #badge    <s> 96x68
@@ -33,5 +34,21 @@ int DoIntXn(int sx, int sy, unsigned int num, unsigned int maxlen);
 int DoIntX(int sx, int sy, unsigned int num);
 int DoCharX(int sx, int sy, unsigned char num);
 int DoShortX(int sx, int sy, uint16_t num);
+void setIntFont(const struct FONT_DEF * font);
+void setExtFont(const char *file);
+
+#define START_FONT 0
+#define SEEK_EXTRAS 1
+#define GET_EXTRAS 2
+#define SEEK_WIDTH 3
+#define GET_WIDTH 4
+#define SEEK_DATA 5
+#define GET_DATA 6
+#define PEEK_DATA 7
+
+int _getFontData(int type, int offset);
+
+#define MAXCHR (30*20)
+extern uint8_t charBuf[MAXCHR];
 
 #endif
diff --git a/tools/font/binary/invaders.f0n b/tools/font/binary/invaders.f0n
new file mode 100644
index 0000000..9f5b284
Binary files /dev/null and b/tools/font/binary/invaders.f0n differ
diff --git a/tools/font/binary/orbit14.f0n b/tools/font/binary/orbit14.f0n
new file mode 100644
index 0000000..cf77c3a
Binary files /dev/null and b/tools/font/binary/orbit14.f0n differ
diff --git a/tools/font/binary/ubuntu18.f0n b/tools/font/binary/ubuntu18.f0n
new file mode 100644
index 0000000..8d13d36
Binary files /dev/null and b/tools/font/binary/ubuntu18.f0n differ
diff --git a/tools/font/binary/ubuntu29.f0n b/tools/font/binary/ubuntu29.f0n
new file mode 100644
index 0000000..60e33cf
Binary files /dev/null and b/tools/font/binary/ubuntu29.f0n differ
diff --git a/tools/font/binary/ubuntu36.f0n b/tools/font/binary/ubuntu36.f0n
new file mode 100644
index 0000000..df0bd90
Binary files /dev/null and b/tools/font/binary/ubuntu36.f0n differ