[GUIDE] How to unlock the bootloader of Nokia 2.1 and 2.1V

hikari_calyx · Jun 9, 2019

The overall procedure is too simple, let me tell you how.
UPDATE: Looks like it's also applicable on Nokia 2.1 V by analyzing aboot. So previous NB1-Collision reserved as reference of EDL method, in case HMD may block it soon.

Please let me know if it doesn't work on your current firmware version. I'm working on make the overall procedure much more stable.

UPDATE: Looks like NB1-Collision is the only way to unlock the bootloader. Please read this topic to acquire the tool and attempt to unlock it: https://xdaforums.com/showthread.php?p=79825293
If Android 9 firmware installed, phone disassembly and wire trick required.

So we recommend users unlock the phone immediately once bought.

Following procedure is archived.

That wraps up the overall unlock procedure.
In case HMD will block this method, you can use EDL method to downgrade aboot partition from this article: https://xdaforums.com/nokia-2-1/how-to/nb1-collision-how-to-unlock-bootloader-t3938072/

avi_loveindia · Jun 17, 2019

Many thanks,,
I think it would be too much to ask right now for Nokia 8.1 , but as 8.1 is very popular Nokia device right now and it's launched in many countries too,,,is it possible that we would see smthng like this for Nokia 8.1 tooo

Arkapravoarka · Jun 17, 2019

I'm stuck on a locked bootloader on my 6.1 plus

DipsZ · Jun 22, 2019

Would this work on a Nokia 2?

t0pu · Jun 24, 2019

Hey... How to I unlock NOKIA 2 Bootloader?... TA-1029

souhail sboui · Jul 1, 2019

so i manually rebooted my nokia 2.1 to download mode but fastboot commands not working cuz my windows does not detect my phone i tried installing drivers manually but after fastboot commant it's stuck at <waiting for device> ,plz help guys

scaryguadian · Jul 2, 2019

souhail sboui said:
so i manually rebooted my nokia 2.1 to download mode but fastboot commands not working cuz my windows does not detect my phone i tried installing drivers manually but after fastboot commant it's stuck at <waiting for device> ,plz help guys

Me too, I don't know what's up

souhail sboui · Jul 2, 2019

scaryguadian said:
Me too, I don't know what's up

when device is ON ,adb detect it and adb commands works but when on download mode fastboot commands not working

it have to be a driver issue but i tried a lot but no hope

scaryguadian · Jul 2, 2019

souhail sboui said:
when device is ON ,adb detect it and adb commands works but when on download mode fastboot commands not working it have to be a driver issue but i tried a lot but no hope

Can someone suggest a driver we can use or a link to the WORKING nokia 2.1 drivers

scaryguadian · Jul 2, 2019

souhail sboui said:
when device is ON ,adb detect it and adb commands works but when on download mode fastboot commands not working it have to be a driver issue but i tried a lot but no hope

oh, its already working for me, just disable signature driver if you are on window 8, 8.1 or 10 and reinstall the drivers thats all.

---------- Post added at 05:19 PM ---------- Previous post was at 05:09 PM ----------

hikari_calyx said:
The overall procedure is too simple, let me tell you how.
UPDATE: Looks like it's also applicable on Nokia 2.1 V by analyzing aboot. So previous NB1-Collision reserved as reference of EDL method, in case HMD may block it soon.

Please let me know if it doesn't work on your current firmware version. I'm working on make the overall procedure much more stable.

Step 1: Download firmware which consists the service bootloader file

You can download it from https://fih-firmware.hikaricalyx.com/hmd_en.html#e2m
Please download E2M-0390-0-00WW-B02 one in this case. If you're using Android 9, download E2M-108C-0-00WW-B01.

Then, extract E2M-0-0390-00WW-1-2-emmc_appsboot_service.zip to get service bootloader file, and the extract password is "WLBGFIH123".

Step 2: Boot your phone to Download mode (Fastboot mode)
You can execute following command then connect your phone when powered off, or use any other method you're familiar with:

Code:

fastboot oem alive

Step 3: Flash service bootloader

Code:

fastboot oem dm-verity (md5_of_serial_number)

Surprised huh? This command is still usable on Nokia 2.1, even on Android 9 basis, not sure why.

For example, if your Serial Number is E2MGAHIKARICALYX, the md5 checksum is 0ab1b1e9f3aacc85849341cd5fb21412, then command will be:

Code:

fastboot oem dm-verity 0ab1b1e9f3aacc85849341cd5fb21412

You can simply Google a website to calculate md5 checksum of a string.

And flash service bootloader:

Code:

fastboot flash aboot /path/to/E2M-0-0390-00WW-1-2-emmc_appsboot_service.mbn fastboot reboot-bootloader

Step 4: Unlock the bootloader
Your phone will reboot to service bootloader. Then grant unlock permission with following commands:

Code:

fastboot oem dm-verity (md5_of_serial_number) fastboot oem fih on fastboot oem devlock allow_unlock

Then unlock the bootloader:

Code:

fastboot oem flashing unlock_critical

When your phone is erasing userdata, then:

Code:

fastboot oem alive (wait for triggering to download mode) fastboot oem dm-verity (md5_of_serial_number) fastboot oem fih on fastboot oem devlock allow_unlock fastboot oem unlock-go

All done. Your phone has unlocked bootloader.
Then reboot your phone to Download mode again and restore deviceinfo:

That wraps up the overall unlock procedure.
In case HMD will block this method, you can use EDL method to downgrade aboot partition from this article: https://xdaforums.com/nokia-2-1/how-to/nb1-collision-how-to-unlock-bootloader-t3938072/

thanks a lot. I have followed the above instructions, but when I tried the second command, I got an error, here is my log

C:\Users\HP620\Documents\Minimal ADB and Fastboot>fastboot devices
E2MBA81107001697 fastboot

C:\Users\HP620\Documents\Minimal ADB and Fastboot>fastboot oem alive
...
OKAY [ 0.005s]
finished. total time: 0.006s

C:\Users\HP620\Documents\Minimal ADB and Fastboot>fastboot oem dm-verity 6e4b6d5
21a65f379bd4ebf94d462005e
...
FAILED (remote: unknown command)
finished. total time: 0.036s

souhail sboui · Jul 3, 2019

scaryguadian said:
oh, its already working for me, just disable signature driver if you are on window 8, 8.1 or 10 and reinstall the drivers thats all.

---------- Post added at 05:19 PM ---------- Previous post was at 05:09 PM ----------

thanks a lot. I have followed the above instructions, but when I tried the second command, I got an error, here is my log

C:\Users\HP620\Documents\Minimal ADB and Fastboot>fastboot devices
E2MBA81107001697 fastboot

C:\Users\HP620\Documents\Minimal ADB and Fastboot>fastboot oem alive
...
OKAY [ 0.005s]
finished. total time: 0.006s

C:\Users\HP620\Documents\Minimal ADB and Fastboot>fastboot oem dm-verity 6e4b6d5
21a65f379bd4ebf94d462005e
...
FAILED (remote: unknown command)
finished. total time: 0.036s

thnx but it didn't work i still can't make the fastboot commands detect the device and am sure the drivers are right

singhnsk · Jul 3, 2019

scaryguadian said:
oh, its already working for me, just disable signature driver if you are on window 8, 8.1 or 10 and reinstall the drivers thats all.

---------- Post added at 05:19 PM ---------- Previous post was at 05:09 PM ----------

thanks a lot. I have followed the above instructions, but when I tried the second command, I got an error, here is my log

C:\Users\HP620\Documents\Minimal ADB and Fastboot>fastboot devices

E2MBA81107001697 fastboot

C:\Users\HP620\Documents\Minimal ADB and Fastboot>fastboot oem alive

...

OKAY [ 0.005s]

finished. total time: 0.006s

C:\Users\HP620\Documents\Minimal ADB and Fastboot>fastboot oem dm-verity 6e4b6d5

21a65f379bd4ebf94d462005e

...

FAILED (remote: unknown command)

finished. total time: 0.036s

It won't work. Only very old bootloaders supported dm-verity.

Sent from my Nokia 8.1

scaryguadian · Jul 3, 2019

singhnsk said:
It won't work. Only very old bootloaders supported dm-verity.

So, what do you suggest I do??

singhnsk · Jul 4, 2019

scaryguadian said:
So, what do you suggest I do??

The unlock can only be done via any of the two:
1. Disassemble > Trigger EDL mode.
2. The paid remote unlock service.

Sent from my Nokia 8.1

souhail sboui · Jul 12, 2019

thnx for the guide man keep it up
some one posted the same problem : after the "fastboot oem dm-verity (md5_of_serial_number)" command it shows "FAILED (remote: unknown command)" ,any solution so i can continue unlocking my device ??

Shmegma · Jul 16, 2019

im also getting "FAILED (remote: unknown command)"
EDM not working either

androidgeek79 · Jul 16, 2019

singhnsk said:
It won't work. Only very old bootloaders supported dm-verity.

Can i downgrade then?

Shmegma · Jul 16, 2019

anyone who had the "FAILED (remote: unknown command)"
try typing your serial number in uppercase, that worked for me, but now im stuck on "fastboot oem fih on" i get the remote error

androidgeek79 · Jul 21, 2019

singhnsk said:
It won't work. Only very old bootloaders supported dm-verity.

Can i downgrade then?

---------- Post added at 11:42 AM ---------- Previous post was at 11:41 AM ----------

Shmegma said:
anyone who had the "FAILED (remote: unknown command)"
try typing your serial number in uppercase, that worked for me, but now im stuck on "fastboot oem fih on" i get the remote error

Still doesn't work, what update are you running

imprestness · Jan 1, 2020

hikari_calyx said:
The overall procedure is too simple, let me tell you how.
UPDATE: Looks like it's also applicable on Nokia 2.1 V by analyzing aboot. So previous NB1-Collision reserved as reference of EDL method, in case HMD may block it soon.

Please let me know if it doesn't work on your current firmware version. I'm working on make the overall procedure much more stable.

UPDATE: Looks like NB1-Collision is the only way to unlock the bootloader. Please read this topic to acquire the tool and attempt to unlock it: https://xdaforums.com/showthread.php?p=79825293
If Android 9 firmware installed, phone disassembly and wire trick required.

So we recommend users unlock the phone immediately once bought.

Following procedure is archived.

Step 1: Download firmware which consists the service bootloader file

You can download it from https://fih-firmware.hikaricalyx.com/hmd_en.html#e2m
Please download E2M-0390-0-00WW-B02 one in this case. If you're using Android 9, download E2M-108C-0-00WW-B01.

Then, extract E2M-0-0390-00WW-1-2-emmc_appsboot_service.zip to get service bootloader file, and the extract password is "WLBGFIH123".

Step 2: Boot your phone to Download mode (Fastboot mode)
You can execute following command then connect your phone when powered off, or use any other method you're familiar with:

Code:

fastboot oem alive

Step 3: Flash service bootloader

Code:

fastboot oem dm-verity (md5_of_serial_number)

Surprised huh? This command is still usable on Nokia 2.1, even on Android 9 basis, not sure why.

For example, if your Serial Number is E2MGAHIKARICALYX, the md5 checksum is 0ab1b1e9f3aacc85849341cd5fb21412, then command will be:

Code:

fastboot oem dm-verity 0ab1b1e9f3aacc85849341cd5fb21412

You can simply Google a website to calculate md5 checksum of a string.

And flash service bootloader:

Code:

fastboot flash aboot /path/to/E2M-0-0390-00WW-1-2-emmc_appsboot_service.mbn fastboot reboot-bootloader

Step 4: Unlock the bootloader
Your phone will reboot to service bootloader. Then grant unlock permission with following commands:

Code:

fastboot oem dm-verity (md5_of_serial_number) fastboot oem fih on fastboot oem devlock allow_unlock

Then unlock the bootloader:

Code:

fastboot oem flashing unlock_critical

When your phone is erasing userdata, then:

Code:

fastboot oem alive (wait for triggering to download mode) fastboot oem dm-verity (md5_of_serial_number) fastboot oem fih on fastboot oem devlock allow_unlock fastboot oem unlock-go

All done. Your phone has unlocked bootloader.
Then reboot your phone to Download mode again and restore deviceinfo:

That wraps up the overall unlock procedure.
In case HMD will block this method, you can use EDL method to downgrade aboot partition from this article: https://xdaforums.com/nokia-2-1/how-to/nb1-collision-how-to-unlock-bootloader-t3938072/

Hi, what am I doing wrong?

Code:

C:\adb>fastboot oem dm-verity ca5943eaee14c601267c58d289f50dd2
                                                   FAILED (remote: 'unknown command')
fastboot: error: Command failed

C:\adb>fastboot flash aboot E2M-0-0390-00WW-1-2-emmc_appsboot_service.mbn
Sending 'aboot' (954 KB)                           OKAY [  0.032s]
Writing 'aboot'                                    FAILED (remote: 'Critical partition flashing is not allowed')
fastboot: error: Command failed

[GUIDE] How to unlock the bootloader of Nokia 2.1 and 2.1V

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