Hopefully Useful Tips

CiberSheep

I spent some time yesterday trying to flash UT on my new Pixel 3a and got some info that might be helpful.

Issue:
- OEM unlock is disabled (grey)
  - I was going through the first Android initial configuration skipping all (as I just wanted to check if it worked)
  - When trying to unlock bootloader from Settings menu it was not possible (message: Contact carrier or connect to internet)
  - Setting internet connection through wifi was not a solution
- Possible solution
  - My device is not locked by any carrier
  - I had to reset Android OS
  - Insert a SIM when asked
  - Set language and region accordingly
- After this I was able to unlock the bootloader
Issue:
- Phone gets stuck on Google logo instead of booting into recovery
  - I had tried several cables and different usb ports without success
- Possible solution
  - On the UBports installer, tick «Wipe user data»
  - Once the fastboot partitions are done, reboot into recovery mode

More known issues? Add them here

nero355

Some general Tips :

Some phones want to do the Bootloader Unlock stuff via the 2G/3G/4G/5G Data Connection.
Wiping Data is something you pretty much always do when flashing a Custom ROM or alternative OS on your phone!

So that explains the issues you were having

GeekBone

I didn't have any problems with my 3a after I flashed Android 9 (Sargo).

https://developers.google.com/android/images#sargo

It's very easy to do. During the Flash it gives you the option to unlock the bootloader. After I flashed it, UBPorts picked up my 3a right away and it installed pretty easily after that.

CiberSheep

@geekbone said in Hopefully Useful Tips:

I didn't have any problems with my 3a after I flashed Android 9 (Sargo).

I couldn't flash anything as the bootloader was locked. My device came with Android 10 (or something)

As @nero355 says, I had to check first with mobile data connection

lduboeuf

@CiberSheep

Thanks for the hint. In my case it was not enough, i got to install Android update (12) and do a factory reset then ( still having the SIM up ), then next run i was able to toggle on OEM unlock.

Note that by installing the required version later, the setting was greyed again but did not blocked the UT install process ( bootloader stays unlocked ).