FP4 Back to stock FPOS and relocking the bootloader

[jaboto]

Hi!

I am kind of new here. I have a FP4 and installed LineageOS in my FP4, I have decided to resell the phone so I am bringing it back to stock.

I have successfully flashed the stock rom by following the procedure here https://support.fairphone.com/hc/en-us/articles/18896094650513-Installing-Fairphone-OS-Manually Current version is FP4.TP2G.C.0119

Now, I am planning to lock the bootloader but I am aware of the risks of bricking the device. I flashed the LineageOS 10-07-2024 and I suspect the security patch might be higher than the one currently offered by Fairphone

 j@XXX  ~/Projects/FP4/FP4-TP2G-factory  fastboot oem device-info
(bootloader) Verity mode: true
(bootloader) Device unlocked: true
(bootloader) Device critical unlocked: true
(bootloader) Charger screen enabled: false
OKAY [  0.001s]

Finished. Total time: 0.001s

 j@XXX  ~/Projects/FP4/FP4-TP2G-factory  fastboot flashing get_unlock_ability
(bootloader) get_unlock_ability: 0
OKAY [  0.001s]
Finished. Total time: 0.001s

Should I wait for Fairphone to release a new full ROM to patch? How often do they do that? Or is there another way to lock the booloader at the current state?

Thanks.

[yvmuell]

Current FPOS is May so you must def wait till at least an update with Jul is available, which might come the next days.

Software update: FP4 A.13 MR6 FP4.TP2G.C.0119.20240509

Hi all, A new software update based on Android 13 is now available to Fairphone 4 users. Software Version: TP2G.C.0119 Build ID: FP4.TP2G.C.0119.20240509 SPL: 5th May 2024 Update size (from previous MR): 97.92 MB (97919977 bytes) Resolved Issues: An issue that was causing the clock on the lockscreen not to update correctly has been solved. The wallpaper settings can now also be searched using the search bar in Settings. Other improvements: Security patch level: 5th of May, 2024

[jaboto]

Ok, thanks for your quick response. I will wait then.