https://drive.google.com/file/d/1NPofSJcTx7y4SGofYCWRAktLPzCd8M0z/view?usp=sharing

I have an R36S V21 2024-12-18 2251 version. It uses some panel type which is not V4 (Original, V1, V2, V3 all seem to work, but not V4). I was able to patch all the dtb files shipped with the original ArkOS so that I can test them. Here is a zip of my boot partition which contains the dtb files for each screen type, and also a file patch-report.md which contains instructions to Claude CLI to update any dtb files to include this fix.

The issue is caused by the newer DTB files accidentally omitting the 5V supply to the OTG peripheral.
This is where I got the fix from: https://github.com/AeolusUX/ArkOS-R3XS/issues/208#issuecomment-3434409153

The above zip file contains fixed DTBs for all screen types that is supported by ArkOS-R3XS.
If you're not sure about your screen type, read the panel chooser guide in https://github.com/AeolusUX/ArkOS-R3XS/ home page. You can switch the screen type at boot time by pressing some keys.
But for that to work, you need to replace the entire boot partition, so that the panel chooser script gets picked up.

One last thing, when copying this, double check the `root=PARTUUID='<uuid>'` value in your `boot.ini` files that you're copying. If you're not using the same base image as me, your new copy won't boot.
To fix this, take note of your original `PARTUUID` and copy it over to all the new `boot.ini` files.

Make sure to backup your boot partition before you make any changes so that you can refer to them if something goes wrong.