a while ago I put a programm on my Arduino pro mini 5V 16mhz and it worked fine. Now, a few months later I wanted to edit the code, but I couldn't write code to it.
I am able to see the Serial Port with changing data comming out, so the communication is working but when I try to upload code I get the "avrdude: stk500_getsync() attempt 1 of 10: not in sync: resp=0x00
" error message. To programm my Arduino I used the CP2102 before, but I also tried it programming with a UNO. With both methodes I can read the outcomming Data but not change the code.
Edit: I have nothing else connected to the Arduino
Anyone can help me?