Hi
I'm trying to upload marlin firmware on a melzi board with arduino

Load the firmware to arduino and compiled ok.

When i try to upload it i'm always getting this error:
"avrdude: verification error, first mismatch at byte 0x0002
0x3c != 0x3b
avrdude: verification error; content mismatchavrdude: verification error, first mismatch at byte 0x0002
0x3c != 0x3b
avrdude: verification error; content mismatch"

Can someone help me?