As a quick background, I own this FS-TH9X v2 radio for 2 years now and I have done many modifications to it. This radio is awesome.
I have been flashing the latest er9x very often, I am using cheap ass ebay programmers and never had any problems.
But for a couple of weeks, I couldn't flash / communicate with the radio, I have verified all connections, checked the fuses, built an external oscillator to fix them and none of this worked.
I was getting the invalid device signature error:
Code: Select all
avrdude.exe: Device signature = 0xf0e1f2 avrdude.exe: Expected signature for ATMEGA64 is 1E 96 02
I hope this helps someone and you don't waste your time trying to find the problem like I did.