I can save regions to sd card but erasing or copying a good region bin from another nuvi using xrgn gives an error. I have tried copying files from internal flash but most file/directory names have misding letters such as voices folder will be ices etc. many file names have _ in front. erasing files in internal flash using del does not result in error but the file is not deleted. Does anyone know how to use the fftl command. I suspect it is only applicable to mtd devices. any ideas on copy_image. does it use rgn file? As a last resort refresh command can be tried. please let me know your best guesses. I will try them out and post results.

I tried to lookup the chipset used in 1xxx it might be the cartesian chip sta2062 from ST Micro. I could not find manual for this chip. If more information is available then an attempt can be made to directly erase the nand flash areas using flash controller. this program can be loaded via usb pre loader. Does any one know the nand flash part number. Nand flash might not be bad just corrupted enough to prevent usage of ergn/xrgn commands.