While holding the button, connect the TV box to your PC using the USB cable. The tool should display "Connect Success". Flash the Firmware: Ensure the "Overwrite Key" to avoid licensing errors.
New firmware defaults EV to 0.0, but most users prefer -0.7 for outdoor sunny days to preserve highlights. M9c Pro 4k Firmware Update
Write this number down. It will help you compare against the latest versions available online to see if an update is necessary. While holding the button, connect the TV box
Always verify the checksum (MD5) of any firmware file before flashing. While holding the button
. The process usually takes several minutes and will show a progress bar.