Canon released updates for their EOS 7D and T2i (550D) cameras.
Firmware update for the Canon 7D is updated to version 1.2.3. It fixes some issues with the speed light transmitter ST-E2, and Canon Macro ring lights. you can find the update here:
Firmware Update Canon 7D
Firmware update for the Canon T2i (550D) is updated to version 1.0.9. It fixes an issue that causes “tone jumping” in some imaging modes. You can find the update here:
Firmware Update Canon T2i (550D)