Are you looking to install this specific firmware version to fix a bricked device, or are you interested in running Linux on it? MattWestb/R29-MXQ-LP3-V2.3-00908 - GitHub

Generic firmware often leads to "bricked" devices or non-functional Wi-Fi. The V23 update specifically targets: Reduces overheating during 4K playback.

Locate the on the back of your MXQ TV box. Inside this port sits a small, clicky tactile switch.

Platforms like the 4PDA RK3229 Forum are home to massive, dedicated threads of users modifying and improving MXQ Pro RK3229 and R29 devices. Here, you can find tutorials, image unpackers/repackers, and translation help for flashing tools.