Development Prototype ABL Binary from Nokia XR20 for Bootloader Unlock.

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alegatorul

Senior Member
Few months ago a customer asked me to flash couples of Nokia XR20 prototype unit for him, so I managed to get prototype ABL dump of this phone.

WARNING: This is not a guide! DO NOT TRY IT ON OTHER SNAPDRAGON 480 BASED NOKIA PHONES INCLUDING G50, X10, X20, X100, G300 - UNLESS YOU KNOW WHAT YOU'RE DOING!

To use it:
1. Enable flashing permission with HDK (an internal flash tool used by triple-color company, sorry can't disclose more details about that). Please search for related service online, we don't provide or promote such service.

2. Download Prototype ABL from following URL:
Click here

3. Flash prototype ABL and OEM unlock enabled frp partition manually, then you can confirm bootloader unlock:
Code:
fastboot flash abl TTG-abl.elf
fastboot reboot-bootloader
fastboot flashing unlock
fastboot flashing unlock_critical

4. Once bootloader unlock completed, please reinstall stock OS to restore ABL back to normal.

SHA256 checksum of ABL image: ac8143f6e0b449c39127aedd6463e2b9242cf37ce90a86c2988b885e34b0587f

Root Key Hash of ABL image: 622D3D5FE38C4198DDFABB264034EFDE58B986B510393A0CF163E803A3FD985E

Proof of concept is attached below, thanks to @singhnsk for testing.
Hey mate,
Did you delete the ABL files?
If i'm trying to enter your website with abl files i get an empty page only with this text:

{"status":"Fail", "code":"00000101"}
 

bobbywan30

Senior Member
Nov 18, 2017
155
10
Howdy. Does anyone know how I can remove this?? nokia xr20
 

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bobbywan30

Senior Member
Nov 18, 2017
155
10
I bought nokia xr20. but I was deceived. do you think i can do something?? can the reset be avoided or removed??
 

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bobbywan30

Senior Member
Nov 18, 2017
155
10
try to get Factory Reset lock removed, then reset your device. Either that, or try signing out your Google Account. Maybe your account is under an organization or something.
I tried. it still appears. the phone works without problems. but when I connect to the wifi internet. immediately the notification appears and then it resets
 

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  • 1
    Bro, Nokia x10 please?
    1
    Bro, Nokia x10 please?

    Here you go
    1
    Trying not to be offtopic, why a decent phone, from a well known brand like Nokia, that often offered android one devices has now low to zero interest from developers? It's not polemic, I am just curious :)
    because HMD just keeps on locking down everything, and tries to stop people from even unlocking the bootloaders by using broken bootloaders for retail units.
    Hikari_Calyx once wrote a whole article on Medium on why it's stupidly hard to unlock the retail units (that are made by HMD), but TL;DR: HMD locks the bootloaders even further every time a new security/feature update is released to its phones by itself, and it even janks the code that makes up the phones' bootloaders, forcing people to use prototype ABL images to unlock the phones.
    The fact that you even need prototype/unreleased models of the damn retail units to unlock those units themselves is stupid enough...
    As for the older models (e.g: 8 PureView, or 6.1, or whatever before 2021-or-so, I suppose? because there are exceptions, like the G10/G20) though, they're fine. All you need is an unlock key (though, unfortunately, you have to buy the key...), and adb, then use the unlock key, and you're done! Nokia even provided a bootloader unlocking service before (although, they only offered it for a limited time, and it doesn't even work across all of their phones! - they only supported the Nokia 8, and the phone had to run on Android 8 with an old security patch, or else they wouldn't allow the unlocking!)
    1
    hahaha, nah, just because a phone runs Android One, doesn't mean its manufacturer will do such a thing. Android One is just the software/operating system part of the phones, and as for the bootloader (which is in the firmware part of the phone), they can just modify it however they want, for the sake of "security" and "stability" and blah blah blah.
    It's just like if PC motherboard manufacturers like MSI and ASUS lock people to just using Windows, without any capabilities to use other OSes (e.g: Linux)
    Cheers mate.
    I'll try with unblocking...
    Anyway, the phone is 1 month old under warranty still
    1
    in this case, the only thing you can do is to reflash the stock ROM. This thread contains a guide to both bootloader unlocking and reflashing the stock ROM to fix this problem.
    I tried to look for firmware to flash with qfil, but I couldn't find it