Atmel STK500 Manual Firmware Upgrade

Atmel Studio will automatically detect any old Atmel STK500 firmware version and request the user to upgrade the firmware. If for some reason the upgrade fails (the serial cable is detached during upgrade, the power goes out, ...) the next time the Atmel Studio tries to connect to the STK500, the board will not be detected and the automatic upgrade procedure will not start.

Following is a procedure on how to manually upgrade an STK500 board. This procedure should work in all cases. The procedure is slightly different for AVR Studio 4 and AVR Studio 5