Fairphone 4 blocked in Fastboot Mode

[Subnox]

Today I get my new Fairphone 4, so I try the iodéOS, as described here I could install it and it works. So after trying it:

1. I turn off again the phone
2. locked the bootloader in Fastboot Mode.
3. Restart the phone
   And now I’m completely stuck in the Fastboot Mode.
   I can’t go in Recovery Mode from Fastboot Mode
   I can’t open Recovery Mode with Volume UP + Power
   I tried from adb Fastboot flashing unlock —> It return:
   FAILED (remote: 'Flashing Unlock is not allowed
   ')
   fastboot: error: Command failed

I try the batch found here to flash the original version again:
But it also stop because the flashing is locked…

So how can I force the recovery mode?
Or how can I force the Fastboot flashing unlock ?

Thanks in advance!

[Volker]

I’m sorry, but it sounds like you bricked your phone like it’s mentioned in this topic (it does not only apply to /e/OS…):

Trapped in fastboot mode with locked bootloader and corrupted custom ROM

After installing the custom ROM /e/ I locked the bootloader and unfortunately disabled “OEM unlocking” in the development settings. Then I restarted my device and always got in the fastboot mode (see attached image). I can’t even go to the recovery anymore. So I have no access to anything (not even adb) except to the restricted (because OEM is locked) fastboot command. Is there a possibility to reset back to stock ROM or unlock the OEM bootloader from fastboot mode with some secret code? Can s…

If so then there’s currently no other known solution than contacting FP support and trying to have it repaired for about 30€.

Are you sure you’d correctly flashed avb_custom_key like e.g. mentioned here:

FP4 - very privacy-friendly custom ROM iodéOS

It’s all dexcribed here: Unlocking criticals is not necessary ===================== WARNING : LOCKED BOOTLOADER ===================== Starting from 20220405 build, Android verified boot is activated on FP4. A new version of avb_custom_key has been generated, required for builds starting from 20220405. If you want to relock your bootloader or already relocked it: flashing the updated avb_custom_key is required (so a locked bootloader must be unlocked again, and data will be wiped). If you…

[Subnox]

Thank for your answer, with all I read until now, it really seems like this…
And this confirm it:
fastboot flashing get_unlock_ability
(bootloader) get_unlock_ability: 0
OKAY [ 0.002s]
Finished. Total time: 0.003s

So I will contact the FP Support, but maybe someone else have good news!?

[AlphaElwedritsch]

@Subnox

but maybe someone else have good news!?

No, no change.
Its about 40 days waiting

<@fairphonehulk:matrix.org> how long did you wait for?

Took 22 days to get a response from support with a shipping label and 18 days to get the phone back after shipping it

[pkotrcka]

So I did the same mistake, to follow instructions and lock. Now I have a 579€ brick

[Volker]

Have a look at the other topic I’ve linked above and contact support.

[pkotrcka]

Phone is already gone as I smashed it. It’s me being an idiot and break perfectly fine device, I am not worth it to have such a good phone. Back to dumbphones.