@NicoDI checked the image of Buster is a Legacy from this link.   https://users.armbian.com/balbes150/firefly_station_p1/Armbian/   I wrote it to the SD card and started it on P1 (with the NVMe module connected), everything starts and works. Yes, when running for 1 second, I see a "grid" on the screen (this is the u-boot splash screen) and the startup continues on without any problems. Which TV do you use ? Is it possible that unsupported data from the TV is received during t