[Tutorial]Lumia Only - Unlocking BootLoader And Flashing Custom Rom Written Tutorial

slowbrow

New member
Aug 8, 2018
4
1
0
can be used to flash custom rom?
i search tutorial to flash on my lumia 520 with cm13, but in the end i got "no valid partition found in the archive" message
what should i do?
 

finnpalm

Member
Oct 9, 2018
7
0
0
Hello. I have a few questions.

- I have a Lumia 820 that I want to unlock the bootloader on, and then later restore the bootloader to its locked state. I see that the program has an option called "Restore bootloader". Is that what it does, relock the bootloader? If not, is there a way to relock an unlocked bootloader?

- Is the bootloader unlock process plug-and-play or are there any tutorials for how the whole process is done?

Best regards.
 

TBM 13

Senior Member
Apr 28, 2018
311
139
53
Argentina
github.com
Hello. I have a few questions.

- I have a Lumia 820 that I want to unlock the bootloader on, and then later restore the bootloader to its locked state. I see that the program has an option called "Restore bootloader". Is that what it does, relock the bootloader? If not, is there a way to relock an unlocked bootloader?

- Is the bootloader unlock process plug-and-play or are there any tutorials for how the whole process is done?

Best regards.
The restore bootloader function basically restores it. I think it reinstalls it. I say this because i had a Lumia 520 with damaged bootloader (just for letting it in a drawer for over a year with the battery inside) and then i restored bootloader and then it booted.

---------- Post added at 12:23 AM ---------- Previous post was at 12:18 AM ----------

Just a quick question, I'm about to use the updated Windows Phone Internals 2.3. I only want to Unlock the Bootloader and Enable root access (for Lumia 950). Doing these alone shouldn't erase phone data, right?
No, it won't erase phone data but if something goes wrong, your phone can brick.
 
Last edited:

anthony35

New member
Dec 10, 2018
1
0
0
erreur bad FFU File

bonjour ,
Je souhaiterai savoir quel fichier .bin je dois installer car lorsque je mets le fichier \RM1089_059w9m1_02074.00000.15234.28004_031.signature.bin (téléchargé depuis le site de lumia), j'ai un message d'erreur:
"Bad FFU file
Bad FFU file: C:\user\admin\desktop\lumia 535\RM1089_059w9m1_02074.00000.15234.28004_031.signature.bin.
le format de l'executable (.exe) ou de la bibliothèque(.dll) n'est pas valide"
d'ou vient le problème? merci de votre aide.
 

is.me.felix

New member
Feb 18, 2019
2
1
0
Well, you can get the FFU file of your Lumia at lumiafirmwaredotcom. But after unlocking the bootloader from the selected FFU file, will flashing the FFU file with unlocked bootloader erase all data from my phone??? I'm just making sure before I start the process because I have a game (mostly used) named Asphalt 8: Airborne, and I don't want to get it erased coz it took literally two days to fully download it... Since we have a slow internet connection (about 70+ to 90+ KB/s average), I cant do it again! So, in conclusion, will this erase all data from my phone after flashing it with unlocked bootloader???????
PS: Lumia 520
unlocking the bootloader won't erase the data, but flashing any ROM to your device will
 

Ovaryraptor

New member
Mar 28, 2019
1
0
0
I'm following this to the T but when I get to step 2 to unlock Root Access I simply get Mass Storage mode failed.

I'm trying to do this on a Lumia 928 so I don't have an SLB3 file which I suspect is the problem. Even when linking the retail .ffu to extract the SLB3 it does nothing.

Am I SOL in even trying to unlock Mass Storage mode to create a back-up?
 

ram2019

New member
Sep 21, 2019
1
0
0
hi,
it seems that windows internal supports lumia 540 device but I have some problem trying to unlock the bootloader.
is there any emergency files to lumia 540 or should I apply a specific process to unlock that device and install another OS.
thx
 

ChauKhanh

Senior Member
Feb 5, 2014
53
3
0
Hi all ! Can I unlock bootloader my Lumia 1020 build 3051.50009.1451.1001 by build 3051.50009.1424.0001.ffu ?
I need to help unlock bootloader for backup rom.zip ! Thank you ! Sorry my English.
 

Iván_Judas

New member
Oct 21, 2017
4
0
1
Hello everyone, I have found a Lumia 1520 and would like to install Android (LineageOS) and I have been trying to follow the tutorial and I am missing several things.

- When I try to unlock the bootloader it asks for 3 files, 2 with the extension ".ffu" and one with the extension ".ede" I have tried to put the official ROM files ".ffu" and it gives me an error ("The OS version of the selected FFU is not supported. Select a donor-FFU with a supported OS version.") and does not allow me to do so.

Someone who can help me please?

I also can't find the file with the extension ".SBL3" can someone tell me where it is?

Thank you

regards
 
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