iPhone X stuck in boot loop, logic board tested in another iPhone

Hello,

I'm encountering an issue with my iPhone X. Earlier today, while I was watching a YouTube video, my phone spontaneously restarted. It then indicated that Wi-Fi was unavailable, and the cellular network remained stuck on "searching." Subsequently, it shut down and restarted itself multiple times, repeating the same behavior.

After a couple of reboot, it couldn't pass the Apple logo.

I've attempted several troubleshooting steps and even conducted advanced tests. Here are the key observations:

1. The logic board is stuck in that boot loop, even when only the display and battery are connected.
2. The boot loop consists of alternating 10-second intervals of a black screen and the appearance of Apple's logo.
3. When I transplanted my motherboard into another functioning iPhone X, it exhibited the same problematic behavior.
4. Conversely, when I placed the motherboard from the working iPhone X into my iPhone X, it booted normally.
5. When I attempt to enter recovery mode and restore it, the phone restarts, shows the Apple logo, and then returns to the recovery screen. Finder.app gives this error: The iPhone “iPhone” could not be restored. An unknown error occurred (4013).
6. DFU mode is detected by Finder, but restoration fails on "Waiting for iPhone" as the iPhone gets into a boot loop

➡️ Can you please advise on how to resolve this issue?

➡️ Do you know if there is a way via the bootloader exploit to boot in verbose mode?

Thanks

UPDATE 21/10/2023:

I've played a bit with a SSH Ramdisk. The iPhone starts booting (showing text lines because of verbose mode), and then lines disappear and the phone restarts.

UPDATE 22/10/2023:

I managed to take a photo of the SSH Ramdisk output: