spycatcher2k:
Nice one mrburnette. Been using AVR-DUDE for years and didn't know that one. Might program an EEPROM editor in C# and use that for uploading to the chip.
One proviso, This only works when using ISP programming. (I don't know if the ArduinoAsISP support it either?) The bootloaders do not support the EEPROM protocol, They just accept it and discard. Since they don't store to data, when avrdude does its readback verification, the verification fails.
Chuck.