Firmware Upgrade

Invokes upgrade mode. No further communication is required.

Upgrading firmware on EDBG-based tools is not a publicly documented mechanism. Calling this protocol command will cause a response to be sent before communication ceases and the tool re-enumerates into its upgrade configuration. At this point atfw.exe (part of Atmel Studio) can be used to upgrade the firmware on the tool. Toggling power without upgrading will put the tool back into application mode.

Note: Not all EDBG-based tools have the same bootloader mechanism.
Table 1. Firmware Upgrade Command Format
Field Size Description
CMD_HOUSEKEEPING_FW_UPGRADE 1 byte Command ID
Version (0x00) 1 byte Command version
Upgrade key 4 bytes Key for enabling upgrade mode

Responses: