Restore CoreELEC changes to the boot process

[Tuxino]

I have a problem to get back factory settings of an android box.

I booted the wrong usb stick. Instead of booting a linux on a usb stick i booted a CE stick for the first time on that box and it changed the boot process/behaviour.

Now the box boots the CE stick just when it is plugged in, but i am not able to boot the linux stick anymore. I tried normal boot with linux stick plugged in and also toothpick method. I am not able to boot that linux anymore.

How can i reset the changes my CE boot caused to the bootloader or u-boot. What is CoreELEC exactly changing after a boot from usb stick?

[wizardknight]

I had this issue when changing between coreelec and another OS even though both OSs were on a SD card. The only way I was able to fix it was to reflash the stock firmware onto the box using the USB burning tool.

[Tuxino]

I hope i can avoid a reflash of the stock firmware.
I hope that CoreELEC created a backup of the bootloader before the change, so i can use that backup to restore the original bootloader from a booted CoreELEC usb media.

Question is where can i find this backup, if CoreELEC created it?
In case CoreELEC has not created such a backup, i think it is a good idea to do it in future releases or at least give a warning that after a CoreELEC boot media is used most other OS boot media will not work anymore.

[vpeter]

Put this file on CE USB stick (replace existing one) and use the first time boot procedure. Does it help or not?

aml_autoscript (101 Bytes)

File based on this aml_autoscript.src content:

defenv
saveenv
run storeargs

[Tuxino]

Amazing this is the solution i was hoping for.

Worked perfectly. I just had to plug in my CE 20.3 stick with your modified aml_autoscript. No toothpick method boot then nothing happens and ending up in android recovery.

This modified aml_autoscript should be added anywhere in the wiki as a solution to prepare an android box with CE to boot other OS boot media again.

Thanks a lot vpeter

[vpeter]

Can you boot other distribution now?

[Tuxino]

Yes, i can boot other distributions again now