OnePlus3 (OnePlus A3003)

This applies also to other devices but is currently approved for my OnePlus3 (A3003) with LineageOS 16 and 17.1 (Android 9 and 10).

You may use the builtin Updater for being notified about new updates and to download images (don't forget to export image before rebooting into recovery)
Don't - and I mean never - push the install button!
- If you do so regardlessly you will end up in a boot loop
- and have to wipe your data partition in recovery before you can successfully install a working OS on your device again.
- So you'll lose all of your apps and their settings. And that sucks so unbelievably much!!
Instead of this you should:
1. Download the update either by
- doing so with the Updater in your devices settings. You might have to export the file before you can find it from your recovery.
- Or you just download it at https://download.lineageos.org/oneplus3.
1. You may install it by using adb and sideload.
2. But the safest way I found up to now is to just reboot into twrp recovery and install it there. It never failed yet.
Again: Don't trust the official sources who strongly reccomend using the builtin Updater!
- Just don't. It haven't been fixed even with 17.1-images. It might be linked to twrp recovery and maybe the newest version of it fixed it when you read this. Let me know if you have tested this succesfully.
- But: Before you test it: Do a complete system backup (the system image option).

Updating LineageOS