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roleoroleo / yi-hack-Allwinner

Custom firmware for Yi 1080p camera based on Allwinner platform
MIT License
444 stars 66 forks source link

BFUS y20ga - Bricked (help needed) #383

Closed nicmorais closed 1 year ago

nicmorais commented 1 year ago

Hello! So, I recently tried to update the hack in my Yi Home 1080p camera (y20ga), but something seems wrong. The device will not boot anymore, and the orange LED just keeps blinking.

I also tried flashing the "unhack" stuff for y20ga, and also tried flashing the hack again. Didn't help. When I try flashing it again, the blue LED starts blinking, the camera reboots itself, and then it justs blinks the orange LED...

What can I do? I'm skilled with soldering and connecting the UART pins... Will provide logs soon, if needed.

nicmorais commented 1 year ago

Here's the bootlog: https://pastebin.com/PqGqn92b

roleoroleo commented 1 year ago

Do you have a backup copy of the flash? You should try to restore mtdblock3.

nicmorais commented 1 year ago

Hello @roleoroleo. I hope you are fine.

Yes, I have the backup. I tried to do so with that unbrick.sh script. But did not solve the issue. I have two BFUS cameras, which one is currently "bricked". The orange LED has became solid (does not blink) and the bootlog is that one I've just provided. Thankfully, I managed to get into the command line on both devices.

Do you know if getting the mtdblock3 from the working camera and writing it down in the bricked one could solve this issue? If so, how do I do it?

I also copied the .ko files from the working (and hacked) camera and ran insmod with then into the bricked camera, and it seems to successfully install them. Except the 8189fs.ko module. It says: "can't insert '8189fs.ko': unknown symbol in module, or unknown parameter".

(Thanks in advance for your great work! I surely will donate.)

roleoroleo commented 1 year ago

Yes, I have the backup. I tried to do so with that unbrick.sh script. But did not solve the issue. I have two BFUS cameras, which one is currently "bricked". The orange LED has became solid (does not blink) and the bootlog is that one I've just provided. Thankfully, I managed to get into the command line on both devices.

If the backup is ok you should be able to restore the cam. In this model, it's very very uncommon to damage other partitions. Only mtdblock3 has a chance to break.

Do you know if getting the mtdblock3 from the working camera and writing it down in the bricked one could solve this issue? If so, how do I do it?

Yes, if the other cam is the same model (y20ga) mtdblock3 is the same.

I also copied the .ko files from the working (and hacked) camera and ran insmod with then into the bricked camera, and it seems to successfully install them. Except the 8189fs.ko module. It says: "can't insert '8189fs.ko': unknown symbol in module, or unknown parameter".

This is not the right way. Try to restore the whole partition. If this procedure https://github.com/roleoroleo/yi-hack-Allwinner/tree/master/unbrick does not work, try to repeat it changing the type of the partition created. I mean:

The bootloader stores the hash of the partition loaded, so you can't load the same partition 2 times.

nicmorais commented 1 year ago

Thanks a lot! The camera was definitively saved. After flashing the unbrick, which was built with build.sh factory, the device was trying to run the system.sh script from the hack, but could not find it. It seemed like the init.sh script was still the hacked version. So I flashed the hack again, and the issue was solved. :smile:

I hope you have a great 2023. Enjoy my donation!

roleoroleo commented 1 year ago

I hope you have a great 2023. Enjoy my donation!

Thank you very much and happy new year!