1 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:
- The logic board is stuck in that boot loop, even when only the display and battery are connected.
- The boot loop consists of alternating 10-second intervals of a black screen and the appearance of Apple's logo.
- When I transplanted my motherboard into another functioning iPhone X, it exhibited the same problematic behavior.
- Conversely, when I placed the motherboard from the working iPhone X into my iPhone X, it booted normally.
- 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).
- 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:
44 
90 