: Bootloader is fine, but display resolution is set to something your TV doesn’t support. Fix : Press the reset button for 10 seconds during boot to force 480p fallback mode.
A: Yes, but unofficial. Search for “LP3 V23 ATV 12.1” on XDA-Developers. Expect bugs with the status bar and screen rotation. r29 mxq lp3 v23 firmware link
in the device's developer settings if the box is still booting. Connection : Connect the box to your PC while holding the reset button : Bootloader is fine, but display resolution is