I have searched this problem and have seen it quite a bit, but still have not been able to solve mine. When I try to upload to my
Arduino Pro Mini 328 - 5V/16MHz via FTDI Basic Breakout - 5V with Windows7 (64bit) i receive the following error.
avrdude: stk500_getsync(): not in sync: resp 0x00
avrdude: stk500_disable(): protocol error, expect 0x14, resp 0x51
I downloaded Arduino-0022 for 64bit Windows and when I use it, I choose the correct board and "check" the only port that is available.
I have also gone to Device Manager>>Ports(COM&LPT)>>USB Serial Port (COM7) and have tried different baud rates, ports and set RTS on close.
Any help with this would be greatly appreciated.