Locking the Bootloader will factory reset your device according to installation instructions for FP4?

[BDesco]

So after installing e/OS one has to relock the bootloader. Ok.
But then the warning: " Warning: Running the below commands will factory reset your device and wipe all data."
Really?
So with e/OS i have to choose between a permanently unlocked phone or stock OS? If so why then write “After you have completed the installation and verified it starts up successfully, you can lock the bootloader on your FP4.” Like it is some part of the e/OS installation process? It should not even be in the installation manual as it would be part of a roll back.
Or is again some mistake in the documentation?

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[piero]

@BDesco

the below commands will factory reset your device

that lead to a clean /e/OS starting as new, without any user activity on the device.

@piero

If you plan to relock the bootloader after the installlation

this is not mandatoty, and only available with Official version, why relocking ?

Most important thing to take care about is the “android Security Update" aka "Security Patch Level” date (SPL) included in the installed Operating System on your device at time of the unlock.

new version on witch you want to relock the bootloader, must included a NEWER (or the same) “android Security Update" aka "Security Patch Level” date (SPL),

otherwise you risk to change your device into Brick.

@piero

3. Finaly, relock the bootloader (optional)

only how it is mentionned at the bottom of the official instructions in the “Smartphone Selector” for your device → “Official or Community install doc” for your device → “Command line” install page for your device !

only if the android security update in the previously installed OS was

older than the android security update included in the version you want to install

only if the newly installed version is an Official one, not a Community version.

re-enable Developer Options, USB debugging and allow OEM unlocking

with the device in bootloader mode,

• Open a terminal from the “/platform-tools” location
• and check bootloader status by running :

./fastboot oem device-info

./fastboot flashing get_unlock_ability

if the return is 1
→ you will be able to relock

if the return is 0
→ you will not be able to relock now, it is advised to reboot or

reinstall FairphoneOS and re-enable Developer Options, USB debugging and allow OEM unlocking . (to get =1),

and then reinstall /e/OS.

[HOWTO] a Safe Guide to install /e/OS

[BDesco]

Thanks.
‘factory reset’ + ‘loose all data’ somehow mad me think → back to FP stock.

[pdamemories]

Similar situation here. I installed official edition of e/OS on FP4. From the documentation I understood the bootloader would be installed with the official image. In the mean time I’ve used the device for days and have migrated configurations and data. When rebooting today I was greeted with the bootloader unlocked prompt. If I would have known in the installation procedure that it would need an additional step I would have done so. No I’m reluctant to do so, as I’d have to reconfigure the phone again.

[aibd]

There are plus and minus to lock bootloader as discussed here A discussion about bootloader locking/unlocking… AKA I want to relock my bootloader, should I?.

I guess this is why reading the install instructions fully once before you start is improved by assuming most of us really need to read 3 times.

The last section of the install page reads

• After installing all the required files the device will reboot.

Locking the Bootloader

After you have completed the installation and verified it starts up successfully, you can lock the bootloader on your FP4.

[pdamemories]

@aibd thanks for the info. My bank app still works without locking the bootloader, which would be my main reason to lock it again. I did read the instructioms beforehand, but as the online flasher didn’t prompt me about it, I falsely assumed it was already locked and then just started using the phone.

[aibd]

@pdamemories

as the online flasher didn’t prompt me about it,

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