Проблема с загрузчиком Quest3

My Quest 3 bootloader is broken. I realized it when I went into the headset's engineering menu. It's not even listed there.

1) I tried updating the system through your dedicated website. But it was no use. Everything loaded to 100%, but it still wouldn't boot.

2) I tried updating it through ADB, but the update only gets to 47% and then resets.

3) And finally, I tried updating the firmware via booting from a flash drive in the engineering menu. Uh, I had to buy a Type-C flash drive. But that didn't work either. Support, please help me!