I am new to this forum and preparing myself to convert my brandnew FP4 to iodéOS.
In case the unfortunate happens to me (unlocked bootloader &get_unlock_ability = 0), could you tell me how to make Magisk set get_unlock_ability = 1?
Is this by installing Magisk on the yet-unbricked FP4 and applying the required commands from there? Is this correct, or can it be done from terminal-ADB?
What are the required commands?
Does the yet-unbricked FP4 need further preparations such as rooting?
Hi, i have my FP4 now for over a year and I would love to use LineageOS 20 because the FP4 is now officialy supported by LineageOS. And when I read through this topic I’m not sure if I should rly do this…
So I have to install the Lineage Recovery thing to install LineageOS. When and how do I have to (or shouldn’t I?) lock the bootloader. And if I go back to the original OS what should I do? Or is this even possible because of the Android anti rollback thing (Because LineageOS 20 is A13 and the FairphoneOS is older and probably has an older security update)
So what should I definitely not do to avoid to have a bricked phone…
Just read along this topic and probably most of your questions are answered.
If it’s too long you should imho at least read the summary (which is about 50 posts…).
My very short summary would be:
you’ve to decide yourself if you’ll lock your bootloader or not. It’s a matter of convenience vs. security.
I suppose it’s not the problems of major releases but just of date of security patch level.
And as long as OEM unlock is enabled you’re on the safe side.
Did I understand it right, that it doesn’t matter if I lock it or not when it comes to get a bricked phone? The risky part is to install later the FPOS?
For what exactly do I have to lock for? I read quite a bit of the Topic and I didn’t find like the cause of the bricked phones. What does the get_unlock_ability exactly mean? And what should I do when it is 0 or 1?
For your future risk of bricking the phone it doesn’t matter if you’ve locked it in the past, that’s correct. But, the risk isn’t only present with FPOS, you can brick it with any OS you install if something goes wrong and you didn’t make sure fastboot flashing get_unlock_ability_ is 1 beforehand.
The CalyxOS device flasher just checks that for you and stops if it isn’t, that’s the part that makes it safer.
You don’t have to, there are some (banking) apps that check for that and will refuse to work and there are several security benefits that are only in effect if the bootloader is locked.
Whether you can unlock the bootloader again by issuing fastboot flashing unlock or not (which means it’s bricked if you can’t boot into the proper Android userland)
If it’s 0 don’t lock, reflash the ROM you were trying to install, check again. If you want to lock the bootloader, don’t boot into Android userland after flashing, there’s a high likelyhood that resets the value and you definitely shouldn’t lock after that.
As long as you don’t brick your phone you can always go back to FPOS, but as @AvidAlbatross noted, make sure, if you are locking the bootloader on a custom ROM, that that’s actually supported.
That’s generally what happens, since it’s a bug in the bootloader so Fairphone’s responsibility, but none of us work there, we can’t guarantee it, the policy might change any time.
Just a small addendum, if you decide to go that route and updated your phone to the latest FPOS already, you’ll need to use the beta factory images, not the ones mentioned in the instructions. More info here.
Just for documentation:
I installed /e/OS and after that LineageOS on my FP4 (purchased 22/03 with FPOS), all worked nice. Then I needed to go back to stock-ROM, because my banking-app only works on phones with locked bootloaders. After installing the latest Stock-Rom ( https://support.fairphone.com/hc/en-us/articles/4405858261777?s=09 ) I locked the bootloader. And voila: Stuck in bootloader with no possibility to unlock or boot into recovery.
Now I contacted FP support and wait for an answer.
To be continued…
So I bought a used fairphone 4 from a big online retailer. Said in the description: foil on the screen was removed, functions flawlessly.
Well turns out it doesn’t work flawless. it is stuck at fasboot the bootloader is locked and booting to recovery or the system does show a quick fairphone logo and returns then to fastboot.
So i guess either someone bricked it and sent it back to the retailer and they sold it again without checking the function of the device, or it was not working from the beginning or magic happend.
I reached out to the online retailer to find a solution.
And it all makes me pretty angry, since i bought a fairphone because it is easily repairable - at least thats what i thought. And rn idk how much of that i can really believe anymore. since it seems to be a problem that needs the intervention of the official support. so what was then the point of getting a repairable phone if i cant repair it on my own.
Also that this wasn’t fixed yet. also the lack of replies to this from fairphone on this all disappoints me, i was hoping that with a company that is invested in repairability and sustainability things would be different but maybe a big part of it is just marketing. thank you all for helping me finding out what’s wrong by reading this thread. i hope the retailer i bought the phone from comes to a good solution for me. And i guess if buying used fairphone 4 phones if possible make sure that it boots beyond the fastboot before buying, especially when buying from private people.