[GUIDE][NOKIA]Unlocking Bootloader

[iTZ saurav]

To unlock bootloader of several Nokia android devices you need to be on Security Patch prior to August 2018 and you need a Unique Unlock Key for your device.
{Mod edit}
If you satisfy the above conditions then here are the steps to unlock bootloader -


1. Reboot to Fastboot/Download Mode
2. Check for your devices using the following command

fastboot devices

3. Type

fastboot flash unlock unlock_key.bin

Note - Replace unlock_key.bin file name with full name of your unlock key file.
4. Type

fastboot oem unlock-go

5. You'll see a bootloader unlock confirmation prompt screen press power button to confirm.
6. Again reboot to Fastboot/Download Mode
7. Follow Step 2 again
8. Follow Step 3 again
9. Type

fastboot flashing unlock_critical

10. Follow Step 5 again


Now you've unlocked your Nokia Device Successfully.

 

[Volski_]

If you are on latest android then you need to downgrade your phone

This part is what I don't understand. How is it possible to downgrade a bootloader locked device from android 10 to Oreo without a signed android Oreo image that is accepted by the device?

 

[iTZ saurav]

There are only two options to get your phone downgraded with locked bootloader, first is Nokia Service Center and second is the websites that I've mentioned in the 1st post they'll downgrade your phone and provide you the unlock service.

 

[Oswald Boelcke]

There are only two options to get your phone downgraded with locked bootloader, first is Nokia Service Center and second is the websites that I've mentioned in the 1st post they'll downgrade your phone and provide you the unlock service.

Do not discuss any paid unlock service in this thread! Please do not mention their names and do not link to them.
Thanks for your cooperation.
Stay safe and stay healthy!
Regards
Oswald Boelcke

 

[Volski_]

What exactly flashing unlock_critical does that flashing unlock doesn't do?

 

[Graveen]

This part is what I don't understand. How is it possible to downgrade a bootloader locked device from android 10 to Oreo without a signed android Oreo image that is accepted by the device?

isn't firmwarte DRG-237-WW.nb0 a signed firmware perfect for downgrading (with OST tool or SUT tool) ?

real question, i just bought a TA-1116 yesterday

 

[Volski_]

If the image is signed, it can be flashed. They might have obtained signed firmware image from the employee in service center.

 

[Graveen]

If the image is signed, it can be flashed. They might have obtained signed firmware image from the employee in service center.

yes excuse my noobiness i was thinking the firmwares available on hikaricalyx website were signed ones released by nokia.

 

[Dikshant Agarwal]

How to unlock bootloader without PC Nokia 6.1 plus

 

[coolwhipp]

Techmesto released the tutorial to unlock the bootloader for some Nokia phones (including Nokia 6.1 plus) on june 21, 2021. Here is the link https://www.techmesto.com/guide-unlock-bootloader-nokia-android-phones/ (You must have a Windows machine)

I used it to unlock mine. It works

 

[cubancigar11]

EDIT: It works. The timezone is EST as per my digging. I was able to unlock it for free.

Leaving below comment for historical reasons:

Their unlock works, apparently, 15 times a day, and the timezone is not mentioned. It is obviously an advertisement for their paid service.

From their website:

• The OTP is valid for 15 minutes from generation.
• Only 15 devices will be supported for unlocking in a day. After this further generation of OTPs will be disabled for the day.
• Please contact us in case you have a bulk requirement.

There is no reason to believe they allow even 15 OTPs or even 1. Since they are obviously able to generate them in "bulk", I think it is best to not mention them here. Let them do their advertisement on Nokia forums.

 

[coolwhipp]

Their unlock works, apparently, 15 times a day, and the timezone is not mentioned. It is obviously an advertisement for their paid service.

EDIT: From their website:

There is no reason to believe they allow even 15 OTPs or even 1. Since they are obviously able to generate them in "bulk", I think it is best to not mention them here. Let them do their advertisement on Nokia forums.

@cubancigar11 You should first try it before dismissing it as advertisement. I used it to unlock my bootloader a few months ago.

 

[cubancigar11]

Thanks. I was also able to unlock it after many tries. I have edited my comment to reflect this. Unfortunately there "donate" link is broken, otherwise I would have donated $5 which they quote as price.

 

[coolwhipp]

Thanks. I was also able to unlock it after many tries. I have edited my comment to reflect this. Unfortunately there "donate" link is broken, otherwise I would have donated $5 which they quote as price.

That is awesome . Happy bootloading @cubancigar11