Restoring stock OS after unsuccessful LineageOS (iodé) install

[Wallby]

@hirnsushi

You said that fastboot flashing get_unlock_ability returns 0, but somehow the installer still runs. Does it prompt you to unlock the phone while it runs?

No there is no prompt for an unlock. The last prompt that happened was to relock it which the iodé installer caused. I selected yes thinking the iodé installer must know what they were doing. Before that I had ran the lock_critical manually after having already booted the stock Android installation. I didn’t run the fastboot lock command but instead started the iodé installer at this point because it required an unlocked but locked critical state.

@hirnsushi

Check that value again and even if it returns 0 try fastboot flashing unlock. That shouldn’t work, but the phone is getting unlocked for the installation somehow.

Seems unsuccessful:

PS C:\Users\maart> fastboot flashing get_unlock_ability
(bootloader) get_unlock_ability: 0
OKAY [  0.002s]
Finished. Total time: 0.003s
PS C:\Users\maart> fastboot flashing unlock
FAILED (remote: 'Flashing Unlock is not allowed
')
fastboot: error: Command failed
PS C:\Users\maart> fastboot flashing get_unlock_ability
(bootloader) get_unlock_ability: 0
OKAY [  0.001s]
Finished. Total time: 0.002s
PS C:\Users\maart>

@hirnsushi

If that’s the case we need to figure out why toggling the OEM unlocking switch in developer options glitches out. Is the phone connected to some form of internet when you try that switch? Shouldn’t be necessary on iodé, but on Fairphone OS that’s required to unlock.
Did you disable any apps or changed any other settings, if so enable them again and try one more time. If that doesn’t work, run the iodé installer again, don’t change any of the defaults of the first run dialog when the device first boots, connect it to the internet, and try toggling it again.

Yes I saw the internet thing in a post somewhere on this forum so I tried doing it with an internet connection, but seems to not have any effect. I’ve done pretty much exactly that, not changing any defaults and using iodéOS that way, so I’ve already ruled that out.

@hirnsushi

Huh, that’s weird, does the application you are trying to install them from on the phone (file manager probably) have the “Install unknown apps” permission set? Which app are you trying to install specifically, there are a few bundled apps in iodé, could it be clashing with one of them?

The only apps I installed this way are:

• WhatsApp from https://www.whatsapp.com/android
• Signal from Signal >> Signal Android APK
• LocalSend from fdroid

Yes all places I tried to install .apk files from have the install apps permission enabled, I got prompted to enable this for the browser (the iodé browser which is Firefox) and the file manager. I also checked the Aurora store, which also has this permission enabled by default, and it cannot be revoked (it looks like it can in the GUI, but if you try it just doesn’t toggle it).