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I got an error "stk500_getsync() not in sync resp=0x00" when I tried to update an Arduino Pro Mini with an FTDI Basic Breakout 5V/3.3V - Micro USB. Maybe someone has instructions on how to resolve this issue. I use the last version of Arduino IDE. All standard stuff like drivers, ports installed and configured.
I have communication with controller and I receive answers from it, but when I try to flash the firmware I get that error.