I have been having a problem with my Arduino Uno. After asking around, I was told I had to replace the ATMEGA328P-PU with a new one. I have no experience with boot-loaders, so I purchased the version here with the Uno boot-loader.
I installed the new ATMEGA328P-PU, however when trying to load a simple sketch onto my arduino I recieve the error message, “avrdude: stk500_getsync(): not in sync: resp=0x00” What do I have to do to make the ardiuno software sync with your ATMEGA328P-PU.
Chances are that the program on your ATMEGAxU2 has corrupted. As luck would happen we wrote a really extensive guide to fixing this problem.
Let me know if that doesn’t fix the issue.