My board is arduino mega 1280, I use arduino_0018 to burn the bootloader and upload sketch. After I burn the bootloader with usbtinyisp programmer, the bootloader seems working, the L led flashes. Then I upload a sketch to the mega board, the problem is upload done successfully for only the first time. When I upload again, it always fails, the error information is:
avrdude: stk500_getsync(): not in sync: resp=0x00
avrdude: stk500_disable(): protocol error, expect=0x14, resp=0x51
I am sure I select the right board and right serial port in Tools menu, could anyone help me with some suggestions? Very thanks!