[Replicant] Galaxy S3 not booting

[Wolfgang Wiedmeyer]

Hi Joonas,

Joonas Kylmälä writes:

> I was playing with resistors on the usb port with the i9305 (galaxy s3)
> device in order to get the UART serial console working. Then I gave up
> and took the wires out and flashed replicant to the device. The device
> would not boot. Then I installed twrp with lineage os to the device.
> Again, it would not boot. After that I found this "stock" ROM [1] for
> the device and flashed it. The device booted now! After this I flashed
> replicant and it would boot also. Why is stock ROM flashing needed in
> order to get Replicant booting? What thing does the stock ROM do
> differently?

Indeed, this sounds strange. It would have been good to have UART to see
what happens ;)
Did you flash a new bootloader when flashing the stock image? Some
resistor values might change the behaviour and some image you flashed as
part of the stock ROM could have caused a reset. But I'm only
speculating and I don't know what is possible with Samsung's proprietary
bootloader. And without more details about where exactly the boot fails,
it's hard to say what happened.

Best regards,
Wolfgang

> I think I experienced this same issue also some years ago with
> cyanogenmod and the fix was also to install the stock rom and then after
> that flash cyanogenmod.
>
> Joonas
>
> [1]
> https://forum.xda-developers.com/galaxy-s3/development-i9305/rom-samsung-stock-4-4-4-rom-collection-t3124027
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