Bricked Fairphone 5: Stuck in locked bootloader

Hi!

A few hours ago I bricked by bootloader by locking it following the instructions here: https://support.fairphone.com/hc/en-us/articles/10492476238865-Manage-the-Bootloader. I have already sent a ticket to customer support, but I also want to try my lock in case there’s something that I can do to fix it.

Running fastboot flashing get_unlock_ability shows the dreaded string:

(bootloader) get_unlock_ability: 0
OKAY [  0.001s]
Finished. Total time: 0.001s

Here’s the output of fastboot getvar all:

(bootloader) parallel-download-flash:yes
(bootloader) hw-revision:10000
(bootloader) unlocked:no
(bootloader) off-mode-charge:1
(bootloader) charger-screen-enabled:1
(bootloader) battery-soc-ok:yes
(bootloader) battery-voltage:4195
(bootloader) version-baseband:13
(bootloader) version-bootloader:FP5.TT4D.A.157.20240417
(bootloader) erase-block-size: 0x1000
(bootloader) logical-block-size: 0x1000
(bootloader) variant:QCM UFS
(bootloader) partition-type:fsc:raw
(bootloader) partition-size:fsc: 0x20000
(bootloader) partition-type:modemst2:raw
(bootloader) partition-size:modemst2: 0x600000
(bootloader) partition-type:modemst1:raw
(bootloader) partition-size:modemst1: 0x600000
(bootloader) partition-type:fsg:raw
(bootloader) partition-size:fsg: 0x300000
(bootloader) partition-type:ALIGN_TO_128K_2:raw
(bootloader) partition-size:ALIGN_TO_128K_2: 0x1A000
(bootloader) partition-type:rtice:raw
(bootloader) partition-size:rtice: 0x80000
(bootloader) partition-type:tzsc:raw
(bootloader) partition-size:tzsc: 0x20000
(bootloader) partition-type:connsec:raw
(bootloader) partition-size:connsec: 0x20000
(bootloader) partition-type:mdcompress:raw
(bootloader) partition-size:mdcompress: 0x1400000
(bootloader) partition-type:vm-data:raw
(bootloader) partition-size:vm-data: 0x20A4000
(bootloader) partition-type:catecontentfv:raw
(bootloader) partition-size:catecontentfv: 0x100000
(bootloader) partition-type:catefv:raw
(bootloader) partition-size:catefv: 0x80000
(bootloader) partition-type:secdata:raw
(bootloader) partition-size:secdata: 0x7000
(bootloader) partition-type:uefivarstore:raw
(bootloader) partition-size:uefivarstore: 0x80000
(bootloader) partition-type:storsec:raw
(bootloader) partition-size:storsec: 0x20000
(bootloader) partition-type:logdump:raw
(bootloader) partition-size:logdump: 0x20000000
(bootloader) partition-type:quantumsdk:raw
(bootloader) partition-size:quantumsdk: 0x2800000
(bootloader) partition-type:logfs:raw
(bootloader) partition-size:logfs: 0x800000
(bootloader) partition-type:toolsfv:raw
(bootloader) partition-size:toolsfv: 0x100000
(bootloader) partition-type:limits-cdsp:raw
(bootloader) partition-size:limits-cdsp: 0x1000
(bootloader) partition-type:limits:raw
(bootloader) partition-size:limits: 0x1000
(bootloader) partition-type:splash:raw
(bootloader) partition-size:splash: 0x20A4000
(bootloader) partition-type:apdp:raw
(bootloader) partition-size:apdp: 0x40000
(bootloader) partition-type:dip:raw
(bootloader) partition-size:dip: 0x100000
(bootloader) partition-type:devinfo:raw
(bootloader) partition-size:devinfo: 0x1000
(bootloader) partition-type:studybk_b:raw
(bootloader) partition-size:studybk_b: 0x600000
(bootloader) partition-type:qweslicstore_b:raw
(bootloader) partition-size:qweslicstore_b: 0x40000
(bootloader) partition-type:vendor_boot_b:raw
(bootloader) partition-size:vendor_boot_b: 0x6000000
(bootloader) partition-type:featenabler_b:raw
(bootloader) partition-size:featenabler_b: 0x20000
(bootloader) partition-type:cpucp_b:raw
(bootloader) partition-size:cpucp_b: 0x100000
(bootloader) partition-type:multiimgoem_b:raw
(bootloader) partition-size:multiimgoem_b: 0x8000
(bootloader) partition-type:shrm_b:raw
(bootloader) partition-size:shrm_b: 0x20000
(bootloader) partition-type:imagefv_b:raw
(bootloader) partition-size:imagefv_b: 0x200000
(bootloader) partition-type:uefisecapp_b:raw
(bootloader) partition-size:uefisecapp_b: 0x200000
(bootloader) partition-type:dtbo_b:raw
(bootloader) partition-size:dtbo_b: 0x1800000
(bootloader) partition-type:vbmeta_b:raw
(bootloader) partition-size:vbmeta_b: 0x10000
(bootloader) partition-type:qupfw_b:raw
(bootloader) partition-size:qupfw_b: 0x14000
(bootloader) partition-type:devcfg_b:raw
(bootloader) partition-size:devcfg_b: 0x20000
(bootloader) partition-type:boot_b:raw
(bootloader) partition-size:boot_b: 0x6000000
(bootloader) partition-type:keymaster_b:raw
(bootloader) partition-size:keymaster_b: 0x80000
(bootloader) partition-type:dsp_b:raw
(bootloader) partition-size:dsp_b: 0x4000000
(bootloader) partition-type:abl_b:raw
(bootloader) partition-size:abl_b: 0x100000
(bootloader) partition-type:mdtp_b:raw
(bootloader) partition-size:mdtp_b: 0x2000000
(bootloader) partition-type:mdtpsecapp_b:raw
(bootloader) partition-size:mdtpsecapp_b: 0x400000
(bootloader) partition-type:bluetooth_b:raw
(bootloader) partition-size:bluetooth_b: 0x400000
(bootloader) partition-type:modem_b:raw
(bootloader) partition-size:modem_b: 0xDC00000
(bootloader) partition-type:hyp_b:raw
(bootloader) partition-size:hyp_b: 0x800000
(bootloader) partition-type:tz_b:raw
(bootloader) partition-size:tz_b: 0x400000
(bootloader) partition-type:aop_b:raw
(bootloader) partition-size:aop_b: 0x80000
(bootloader) partition-type:studybk_a:raw
(bootloader) partition-size:studybk_a: 0x600000
(bootloader) partition-type:qweslicstore_a:raw
(bootloader) partition-size:qweslicstore_a: 0x40000
(bootloader) partition-type:qmcs:raw
(bootloader) partition-size:qmcs: 0x1E00000
(bootloader) partition-type:vendor_boot_a:raw
(bootloader) partition-size:vendor_boot_a: 0x6000000
(bootloader) partition-type:featenabler_a:raw
(bootloader) partition-size:featenabler_a: 0x20000
(bootloader) partition-type:cpucp_a:raw
(bootloader) partition-size:cpucp_a: 0x100000
(bootloader) partition-type:multiimgoem_a:raw
(bootloader) partition-size:multiimgoem_a: 0x8000
(bootloader) partition-type:shrm_a:raw
(bootloader) partition-size:shrm_a: 0x20000
(bootloader) partition-type:imagefv_a:raw
(bootloader) partition-size:imagefv_a: 0x200000
(bootloader) partition-type:uefisecapp_a:raw
(bootloader) partition-size:uefisecapp_a: 0x200000
(bootloader) partition-type:dtbo_a:raw
(bootloader) partition-size:dtbo_a: 0x1800000
(bootloader) partition-type:vbmeta_a:raw
(bootloader) partition-size:vbmeta_a: 0x10000
(bootloader) partition-type:qupfw_a:raw
(bootloader) partition-size:qupfw_a: 0x14000
(bootloader) partition-type:devcfg_a:raw
(bootloader) partition-size:devcfg_a: 0x20000
(bootloader) partition-type:boot_a:raw
(bootloader) partition-size:boot_a: 0x6000000
(bootloader) partition-type:keymaster_a:raw
(bootloader) partition-size:keymaster_a: 0x80000
(bootloader) partition-type:dsp_a:raw
(bootloader) partition-size:dsp_a: 0x4000000
(bootloader) partition-type:abl_a:raw
(bootloader) partition-size:abl_a: 0x100000
(bootloader) partition-type:mdtp_a:raw
(bootloader) partition-size:mdtp_a: 0x2000000
(bootloader) partition-type:mdtpsecapp_a:raw
(bootloader) partition-size:mdtpsecapp_a: 0x400000
(bootloader) partition-type:bluetooth_a:raw
(bootloader) partition-size:bluetooth_a: 0x400000
(bootloader) partition-type:modem_a:raw
(bootloader) partition-size:modem_a: 0xDC00000
(bootloader) partition-type:hyp_a:raw
(bootloader) partition-size:hyp_a: 0x800000
(bootloader) partition-type:tz_a:raw
(bootloader) partition-size:tz_a: 0x400000
(bootloader) partition-type:aop_a:raw
(bootloader) partition-size:aop_a: 0x80000
(bootloader) partition-type:ddr:raw
(bootloader) partition-size:ddr: 0x100000
(bootloader) partition-type:cdt:raw
(bootloader) partition-size:cdt: 0x20000
(bootloader) partition-type:ALIGN_TO_128K_1:raw
(bootloader) partition-size:ALIGN_TO_128K_1: 0x1A000
(bootloader) partition-type:xbl_config_b:raw
(bootloader) partition-size:xbl_config_b: 0x3A000
(bootloader) partition-type:xbl_b:raw
(bootloader) partition-size:xbl_b: 0x385000
(bootloader) partition-type:xbl_config_a:raw
(bootloader) partition-size:xbl_config_a: 0x3A000
(bootloader) partition-type:xbl_a:raw
(bootloader) partition-size:xbl_a: 0x385000
(bootloader) partition-type:userdata:f2fs
(bootloader) partition-size:userdata: 0x3580273000
(bootloader) partition-type:rawdump:raw
(bootloader) partition-size:rawdump: 0x30C800000
(bootloader) partition-type:metadata:ext4
(bootloader) partition-size:metadata: 0x1000000
(bootloader) partition-type:vbmeta_system_b:raw
(bootloader) partition-size:vbmeta_system_b: 0x10000
(bootloader) partition-type:vbmeta_system_a:raw
(bootloader) partition-size:vbmeta_system_a: 0x10000
(bootloader) partition-type:super:raw
(bootloader) partition-size:super: 0x180000000
(bootloader) partition-type:swversion:raw
(bootloader) partition-size:swversion: 0x20000
(bootloader) partition-type:study:raw
(bootloader) partition-size:study: 0x600000
(bootloader) partition-type:frp:raw
(bootloader) partition-size:frp: 0x80000
(bootloader) partition-type:keystore:raw
(bootloader) partition-size:keystore: 0x80000
(bootloader) partition-type:misc:raw
(bootloader) partition-size:misc: 0x100000
(bootloader) partition-type:persist:raw
(bootloader) partition-size:persist: 0x2000000
(bootloader) partition-type:ssd:raw
(bootloader) partition-size:ssd: 0x2000
(bootloader) partition-type:oembin:raw
(bootloader) partition-size:oembin: 0x400000
(bootloader) partition-type:fpconfig:raw
(bootloader) partition-size:fpconfig: 0x20000
(bootloader) partition-type:fpconfig_persist:raw
(bootloader) partition-size:fpconfig_persist: 0x20000
(bootloader) partition-type:traceability:raw
(bootloader) partition-size:traceability: 0x100000
(bootloader) has-slot:modem:yes
(bootloader) has-slot:system:no
(bootloader) current-slot:a
(bootloader) has-slot:boot:yes
(bootloader) slot-retry-count:b:6
(bootloader) slot-unbootable:b:yes
(bootloader) slot-successful:b:yes
(bootloader) slot-retry-count:a:7
(bootloader) slot-unbootable:a:yes
(bootloader) slot-successful:a:yes
(bootloader) slot-count:2
(bootloader) secure:yes
(bootloader) serialno:f7c649ff
(bootloader) product:FP5
(bootloader) snapshot-update-status:none
(bootloader) is-userspace:no
(bootloader) max-download-size:805306368
(bootloader) kernel:uefi

Right now, the screen shows that the bootloader is locked and trying to reboot to recovery or system always sends me back to the bootloader. Is there anything I can do to unbrick the phone without having to send it to get repaired?

Thank you in advance for your help

When the bootloader is locked and you cant unlock it, you cant unbrick and will have to send it to Fairphones repair center

Rip. I still don’t understand, though, at what points is it safe to lock the bootloader?

You dont say what lead to the brick?

I thought I did, sorry. After installing Lineage, launching the system and soing some work, I had an issue i thought could be solved by locking the bootloader, which I believed was safe. I ran fastboot flashing lock and entering the system greeted me with the “your system is corrupt” message. After that, I can only enter the locked bootloader.

Linneage does not support looking the bootloader.

In general, most important issue that causes bricks is the security patch level date, that must be the same or higher.

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I’ll send it to repair and not lock it again. Is the repair cost still around 30 euros give or take as I’ve read in other, older threads? I also read they take 2/3 weeks to return it. Is that more or less accurate?

Thats something obly Fairphone can tell you. As far as I’m aware the unbrick “repair” was so far around 30-40€.

“… Wait until you get a software update with the same or newer security patch level before locking the bootloader…”
(https://support.fairphone.com/hc/en-us/articles/10492476238865-Manage-the-Bootloader)

It does.
But it is pointless if the signature is not also changed?

https://blog.hansenpartnership.com/2024/01/

Officially its not support according to their FAQ

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