Hi
I have tried reflashing them using an Arduino Uno as an ISP. I used the default stk500v2 hex file in the hardware->arduino->bootloaders->stk500v2. On both boards at the end I got the content mismatch error. I did some research online and found that the process works even if one gets that error. But nothing happened. :~
So I tried with another version of bootloader file from Arduino-stk500v2-bootloader/goodHexFiles at master · arduino/Arduino-stk500v2-bootloader · GitHub. I got the same content mismatch error from avrdude and nothing happened when I try to upload a sketch.
I am still unable to upload any sketches to my boards even after reflashing them.
Any more ideas on atleast what the problem might be ?
Thanks
--ksp