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Google Pixel (2016) bootloop. (Android 8.1/Feb security patch)(Locked bootloader)

I left my phone to charge overnight. And the next morning, My phone gets into bootloop. I was able to turn it off manually through fastboot by using (holding power button + volume down key simultaneously).
My Phone able to get into Fastboot and Recovery mode, So I tried the following troubleshooting:
1. Factory reset through recovery mode. (No luck)
2. Flash latest factory image. (Bootloader locked)
3. Rescue OTA. (No luck)
Phone will still bootlooping. My phone totally unusable now. I can't RMA because I live in Singapore and bought this phone from Singapore (online marketplace) about 1 year + ago.
Here is the result after typing "fastboot getvar all" command:
(bootloader) current-slot:a
(bootloader) slot-retry-count:b:2
(bootloader) slot-unbootable:b:no
(bootloader) slot-successful:b:yes
(bootloader) slot-retry-count:a:2
(bootloader) slot-unbootable:a:no
(bootloader) slot-successful:a:yes
Click to expand...
Click to collapse

So this means you have Verizon version and cannot unlock BL?

cnkhanh said:
So this means you have Verizon version and cannot unlock BL?
Click to expand...
Click to collapse
Yes, It's a Verizon version and the bootloader can't be unlocked.

I used a hairdryer on the back to heat it up to get into developer options and quickly check allow unlock before it rebooted. I am still getting things fully restored but it's closer.

boot loop

my son did something to his phone. it was unlocked and rooted. now it is locked and in a boot loop. only the first htc screen pops up and reboots from there. i can get into fastboot and bootloader but thats it. if i try recovery i get a pic of a phone and red triangle with exclamation point in it and it sits for a few min then reboots. in download mode i can adb and send fastboot commands, but the computer doesnt see the phone. i have tried the htc rom utility but it doesnt see the phone. also tried butting files on sd card and booting into download mode, it just keeps telling me the phone is locked. please help me out. if you need anymore info let me know and i will supply it. thank
joe

My first guess would be that there is a patched kernel installed (for root) and the bootloader is relocked. That would result in a bootloop like this because a locked bootloader can only boot the original stock kernel. So unlock the bootloader again and it should be fine. And if you want to lock the bootloader again, flash the stock kernel first.

im not able to unlock it. when i do fastboot flash unlocktoken Unlock_code.bin gives me an error and wont unlock. ive tried this command in download and ruu mode and neither worked.

grvtman said:
im not able to unlock it. when i do fastboot flash unlocktoken Unlock_code.bin gives me an error and wont unlock. ive tried this command in download and ruu mode and neither worked.
Click to expand...
Click to collapse
Hmm, what kind of u11 life do you have? Sense or Andorid One Version?
Did you get a new unlocktoken from HTC or tried it with the first one again?
I think you have to flash it in download mode but not 100% sure.

its sense. this is what i get when trying to unlock
sending 'unlocktoken' (0 KB)...
OKAY [ 1.002s]
writing 'unlocktoken'...
(bootloader) flash unlocktoken
(bootloader) [KillSwitch] : /dev/block/bootdevice/by-name/frp
(bootloader) [KillSwitch] Last Byte is 0X00, disable unlock
(bootloader) [KillSwitch] oem unlock Turn Off!
Click to expand...
Click to collapse

grvtman said:
its sense. this is what i get when trying to unlock
Click to expand...
Click to collapse
Oh thats bad. To solve this you would need to boot into the system and go into developer settings to allow bootloader unlock. But as you are not able to boot into the system, i dont know what to do exactly. I have the android one version and this is very different. Maybe you could try to flash a ruu if there is a ruu somewhere. If someone with sense version could help you that would be much better.
So your facts are:
Sense Version
Bootloader relocked
something changed on kernel or system so system cant boot with locked bootloader
unlocking bootloader not possible because not allowed in developer settings

Yeah thats it. Thanks for braking it down for me.
Sense Version
Bootloader relocked
something changed on kernel or system so system cant boot with locked bootloader
unlocking bootloader not possible because not allowed in developer settings
Click to expand...
Click to collapse

FRP LOCK in Bootloop there is a solution?

brick my Huawei p20 now with frp locked already tried the command "C: \ Users \ ANDRE> fastboot oem frp-unlock Q9QG9UMJ6P1WR5JL"
...
(bootloader) The device will reboot and do factory reset ...
OKAY [4.446s]
finished. total time: 4.452s "
Ps* Q9QG9UMJ6P1WR5JL is code for unlock my frp
The cell phone restarts, it resets the error and when I enter fastboot again the FRP appears again, is there any solution to this?

Hope I can help you. Please try the following steps and let us know if it works for you:
1. In fastboot, use command "fastboot oem relock Q9QG9UMJ6P1WR5JL". It should do a factory reset and bring you back to stock ROM
2. After booting into stock ROM, activate developer options
3. In developer options, activate OEM unlocking option (i.e. enable OEM unlock)
4. Reboot the phone into fastboot mode and use the command "fastboot oem unlock Q9QG9UMJ6P1WR5JL". to unlock the bootloader. The lock statuses should be changed to:
Phone: unlocked
FRP: unlocked
6. Factory reset and reboot and you should be good.

owichiu said:
Hope I can help you. Please try the following steps and let us know if it works for you:
1. In fastboot, use command "fastboot oem relock Q9QG9UMJ6P1WR5JL". It should do a factory reset and bring you back to stock ROM
2. After booting into stock ROM, activate developer options
3. In developer options, activate OEM unlocking option (i.e. enable OEM unlock)
4. Reboot the phone into fastboot mode and use the command "fastboot oem unlock Q9QG9UMJ6P1WR5JL". to unlock the bootloader. The lock statuses should be changed to:
Phone: unlocked
FRP: unlocked
6. Factory reset and reboot and you should be good.
Click to expand...
Click to collapse
Thank you very much for your attention.
Come on: Code Q9QG9UMJ6P1WR5JL is FRP unlocking. To unlock Bootloader the code is T1JR94CJQLNOWMIA
"C:\Users\ANDRE>fastboot oem relock T1JR94CJQLNOWMIA
...
FAILED (remote: stat not match)
finished. total time: 0.007s"
"C:\Users\ANDRE>fastboot oem unlock T1JR94CJQLNOWMIA
...
(bootloader) Necessary to unlock FRP!
(bootloader) Navigate to Developer options, and enable "OEM unlock"!
FAILED (remote: Command not allowed)
finished. total time: 0.022s"
Unfortunately the phone this brick, does not start the system only in fastboot and erecovery (which does not work) so I understood I need to unblock the frp to be able to perform the other task to revive my phone but when I run the "fastboot oem frp-unlock Q9QG9UMJ6P1WR5JL" everything that I have already reported in the first topic

Sorry I can't help you further but seems like your case is similar to this: https://forum.xda-developers.com/mate-10/how-to/help-bootloader-locked-frp-locked-boot-t3748976

how did you got the frp code，i just know the bootloader code。

chm1989627 said:
how did you got the frp code，i just know the bootloader code。
Click to expand...
Click to collapse
Buy on ebay

owichiu said:
Sorry I can't help you further but seems like your case is similar to this: https://forum.xda-developers.com/mate-10/how-to/help-bootloader-locked-frp-locked-boot-t3748976
Click to expand...
Click to collapse
Yes, this case was solved with DC-unlocker, it turns out they still do not support p20 = /

now, i just save my phone ,this is my way,
-1，you need have dc-phoenix account ,
-2,you need to download a full fireware package just like update-sd.zip(not firmware finder)
-3,unzip fw,open dc,in update file select upsate.app and customization file select clt~l29~hw~spcseas(the small package also in the unzip file )
-4,power off you phone,connect your phone to pc and hold vol +and vol - the phone will appear installing update 5% ,
-5 now press dc update in the below sides ,soft will begain flash file,you will waitting foe about 20min's，then your phone will be ok.
(sorry for my poor english)

chm1989627 said:
now, i just save my phone ,this is my way,
-1，you need have dc-phoenix account ,
-2,you need to download a full fireware package just like update-sd.zip(not firmware finder)
-3,unzip fw,open dc,in update file select upsate.app and customization file select clt~l29~hw~spcseas(the small package also in the unzip file )
-4,power off you phone,connect your phone to pc and hold vol +and vol - the phone will appear installing update 5% ,
-5 now press dc update in the below sides ,soft will begain flash file,you will waitting foe about 20min's，then your phone will be ok.
(sorry for my poor english)
Click to expand...
Click to collapse
Thank you very much for your help, but now I have to send my phone to technical assistance because I could not get it, if someone can use this method leave us a feedback

Huawei p20 frp unlock
Huawei p20 frp unlock
Hi if your needing to bypass the frp lock on your huawei because someone factory reset it and forgot the google id do a Google search on huawei p20 frp bypass, scroll down until you come to mobileheadlines website. They had shortcut maker app download and full instructions on how to bypass it, it worked for me no probs, aslo there is a great video by hard reset ablout frp bypassing on the p20 on you tube. Hope this helps u out dave b...

P20 Pro is bricked as well... (Need help)
I was driving in the car using google maps when all of a sudden my phone started to reboot, and got stuck in a boot loop... I haven't rooted or installed any ROMs on this device at all so I have no idea what triggered it to reboot or even get stuck in boot loop. I have it connected to my computer and have the "FASTBOOT&RESCUE MODE" screen pulled up and I can talk to it through ADB, but I have no idea where to go from here, I've been trying to follow many different threads but I cant seem to find a solution that works for me... Anyone please help!
On the "FASTBOOT&RESCUE MODE" screen it's displaying "Phone Locked" and "FRP Lock" I haven't found any tutorials on how to bypass the FRP lock for this device (While being stuck in a bootloop).
So far I've used fastboot commands
---------------------------------------------------------------------------------------------------------------------------------------------------
C:\Users\Arons Acer\Desktop\minimal_adb_fastboot_1.4.3_portable>fastboot devices
WCR7N18709000661 fastboot
C:\Users\Arons Acer\Desktop\minimal_adb_fastboot_1.4.3_portable>
---------------------------------------------------------------------------------------------------------------------------------------------------
C:\Users\Arons Acer\Desktop\minimal_adb_fastboot_1.4.3_portable>fastboot oem lock
...
FAILED (remote: Command not allowed)
finished. total time: 0.012s
---------------------------------------------------------------------------------------------------------------------------------------------------
C:\Users\Arons Acer\Desktop\minimal_adb_fastboot_1.4.3_portable>fastboot oem unlock
...
(bootloader) Necessary to unlock FRP!
(bootloader) Navigate to Developer options, and enable "OEM unlock"!
FAILED (remote: Command not allowed)
finished. total time: 0.020s

Drekko said:
brick my Huawei p20 now with frp locked already tried the command "C: \ Users \ ANDRE> fastboot oem frp-unlock Q9QG9UMJ6P1WR5JL"
...
(bootloader) The device will reboot and do factory reset ...
OKAY [4.446s]
finished. total time: 4.452s "
Ps* Q9QG9UMJ6P1WR5JL is code for unlock my frp
The cell phone restarts, it resets the error and when I enter fastboot again the FRP appears again, is there any solution to this?
Click to expand...
Click to collapse
Where can i get my FRP key???? I don't mind paying but so far nobody has been able to get me one for my Huawei P20 Pro (L29)

HMD releases source code for nokia 5.1 plus

As HMD releases the source code of nokia 5.1 plus/x5, now the community can work on the development of nokia mobile.
https://www.nokia.com/phones/en_int/opensource/

We still have the waiting game to see if they will let us unlock the bootloader. I don't see why they would release that if they have no plans to allow unlocked bootloaders. If anyone knows of any way we can help to get it done quicker, it would be good to know. Like a petition to unlock bootloader.

rustdroid said:
We still have the waiting game to see if they will let us unlock the bootloader. I don't see why they would release that if they have no plans to allow unlocked bootloaders. If anyone knows of any way we can help to get it done quicker, it would be good to know. Like a petition to unlock bootloader.
Click to expand...
Click to collapse
In my country ,china, a person who name is HCT_Mascot_洛克人EFI in weibo say he has already unlocked the bootloader and in the taobao which same as ebay you can unlock it by 30rmb. I don't know how they make it why they don't release it.

Yes I heard you can pay $5 to get bootloader unlocked but I haven't seen anyone with the bootloader unlocked yet so don't know if it's true. I don't think we should have to pay anything. They should share how they are doing it so we can all do it for free.

https://www.nokia.com/phones/en_int/bootloader/
You can unlock the bootloader using this site officialy by nokia....not tested but it's official nokia website

thevasugoel said:
https://www.nokia.com/phones/en_int/bootloader/
You can unlock the bootloader using this site officialy by nokia....not tested but it's official nokia website
Click to expand...
Click to collapse
That is only for Nokia 8. I tried when I first got the phone app just crashes.

you can unlock x5 (5.1 plus) bootloader by putting your phone in fastboot/bootloader mode and typing "fastboot flashing unlock" in cmd (you need to connect your phone to a pc with adb and adb drivers)

CapKenway said:
you can unlock x5 (5.1 plus) bootloader by putting your phone in fastboot/bootloader mode and typing "fastboot flashing unlock" in cmd (you need to connect your phone to a pc with adb and adb drivers)
Click to expand...
Click to collapse
Doesn't work for me. Tried it when i first got the phone.

rustdroid said:
Doesn't work for me. Tried it when i first got the phone.
Click to expand...
Click to collapse
Are you on pie? To my experience, i didnt work on oreo.

CapKenway said:
Are you on pie? To my experience, i didnt work on oreo.
Click to expand...
Click to collapse
Yes i'm on Pie, I read that it can't be done on Pie. i'm just going to wait until Nokia allows it, If they do.

rustdroid said:
Yes i'm on Pie, I read that it can't be done on Pie. i'm just going to wait until Nokia allows it, If they do.
Click to expand...
Click to collapse
I was able to do it and i am on pie.

CapKenway said:
I was able to do it and i am on pie.
Click to expand...
Click to collapse
Show some proof that you have unlocked bootloader ?

Well, I sold my X5 and now I am using a Oneplus 3t

If you are on pie, first enable the developer options, then access the developer options menu, switch the developer options off, then back on, you can slide the OEM unlocking switch to on and confirm it with password/figure. After that switch the ADB on, connect the phone to computer via usb and "sudo adb reboot bootloader" ...
sudo fastboot flashing get_unlock_ability
...
(bootloader) unlock_ability = 16777216
OKAY [ 0.008s]
finished. total time: 0.008s
So it's now in somekind of state it can be unlocked...
However: sudo fastboot flashing unlock_critical
...
(bootloader) Start unlock flow
FAILED (remote:
Unlock operation is not allowed
)

homopetteri said:
If you are on pie, first enable the developer options, then access the developer options menu, switch the developer options off, then back on, you can slide the OEM unlocking switch to on and confirm it with password/figure. After that switch the ADB on, connect the phone to computer via usb and "sudo adb reboot bootloader" ...
sudo fastboot flashing get_unlock_ability
...
(bootloader) unlock_ability = 16777216
OKAY [ 0.008s]
finished. total time: 0.008s
So it's now in somekind of state it can be unlocked...
However: sudo fastboot flashing unlock_critical
...
(bootloader) Start unlock flow
FAILED (remote:
Unlock operation is not allowed
)
Click to expand...
Click to collapse
Yeah same thing for me, but
Code:
(bootloader) unlock_ability = 16777216
clearly said that the bootloader is unlockable
in Google devices a
Code:
fastboot flashing unlock_critical
should come with:
Code:
(bootloader) Start unlock flow
OKAY [ 38.004s]
finished. total time: 38.004s
$ fastboot reboot

Deleted

Question Help unlocking bootloader

Hey guys,
I am trying to unlock my bootloader but it doesnt work, everytime I do the "Fastboot oem get_unlock_data" command, it says it failed to get unlock data.
I have unlock bootloader option in dev settings enabled and all drivers properly installed along with fully working sdk and fastboot tools etc. I have a couple xiaomi devices with different custom roms.
Previously I installed RETLA using tiny fastboot script cus i bought the phone in latin america but software channel says RETAR... Is this discrepancy the problem?
If not, anyone know why even though bootloader unlock option is on, the fastboot command to get the data fails?
Using getvar all i see the cid is 0x0000, i've read that having cid: 0x0000 is the problem, might installing the proper firmware: RETAR change this?
Ty

Hpotersept2 said:
cid is 0x0000
Click to expand...
Click to collapse
Most likely you will have to forget about unlocking the bootloader.
Reflashing will not help you in any way.

ilia3367 said:
Most likely you will have to forget about unlocking the bootloader.
Reflashing will not help you in any way.
Click to expand...
Click to collapse
Do you know why the cid is like that? Idk what has been done to it cus I bought it used. Any ideas?
Ty

The boot loader on your phone was blocked incorrectly and the system stopped starting.
cid: 0x0000 is a consequence of the boot loader working state recovery software.
It is now in a state oem-locked" as it was originally from the factory. But you cannot unlock the bootloader now. But, if I'm not mistaken, you can install firmware for any update region without having to unlock the bootloader.