I am trying to use AVRUBD File Version 188.8.131.526, HEX Bootloader to update the firmware on a tracking device. The program was supplied with the unit. I can load the HEX file into the Bootloader, but it throws up the following error Buffer overflow  >  which suggests the HEX file has not fully loaded. Can you confirm this and is there anything I can do to avoid the error? I don't profess to be an expert so any assistance would be appreciated.