--- ftdi.c.orig	2006-12-11 12:09:18.000000000 -0300
+++ ftdi.c	2007-03-29 02:07:47.000000000 -0300
@@ -1185,6 +1185,15 @@ int ftdi_eeprom_build(struct ftdi_eeprom
     // calculate checksum
     checksum = 0xAAAA;
 
+#if 1
+    for (i = 0; i < 64; i++) {
+        value = output[i*2];
+        value += output[(i*2)+1] << 8;
+
+        checksum = value^checksum;
+        checksum = (checksum << 1) | (checksum >> 15);
+    }
+#endif
     for (i = 0; i < 63; i++) {
         value = output[i*2];
         value += output[(i*2)+1] << 8;
@@ -1237,9 +1246,19 @@ int ftdi_write_eeprom(struct ftdi_contex
     for (i = 0; i < 64; i++) {
         usb_val = eeprom[i*2];
         usb_val += eeprom[(i*2)+1] << 8;
+	if (i == 63)
+		usb_val = 0;
         if (usb_control_msg(ftdi->usb_dev, 0x40, 0x91, usb_val, i, NULL, 0, ftdi->usb_write_timeout) != 0)
             ftdi_error_return(-1, "unable to write eeprom");
     }
+#if 1
+    for (i = 0; i < 64; i++) {
+        usb_val = eeprom[i*2];
+        usb_val += eeprom[(i*2)+1] << 8;
+        if (usb_control_msg(ftdi->usb_dev, 0x40, 0x91, usb_val, i+64, NULL, 0, ftdi->usb_write_timeout) != 0)
+            ftdi_error_return(-1, "unable to write eeprom");
+    }
+#endif
 
     return 0;
 }