Yes I have just been notified of the reverse camera glitch, this is related to the new MCU, seems in applying the black screen fix they did something to the RVC detection. Working on a solution now but the MCU cannot be un-updated because the unit detects if your current MCU is newer. You can however flash to the previous MPU if you don't like other parts of the update but can you elaborate on the glitchy nav / radio / SD switch?