I want to install an unlocked firmware on my Galaxy S8+ G955U

[Android Central Question]

I did bought my phone on Facebook. It was unlocked at the time. I tried to update it with the latest firmware. I got the exact firmware as of my device. When I installed the firmware it was a Verizon firmware. I live in Canada and my service provider is Rogers. I tried everywhere but could not get any unlocked firmware. My Firmware based version is (G955USQS7DSK2). I tried to install different firmwares but Odin shows Fail (Auth). Any help would be appreciated. Thanks

 

[mustang7757]

You want to go from G955U carrier version to G955U1 unlocked ?

I can help you

I'll leave a Link to register so you can communicate here as a guest account you can only post questions but can't reply.
https://forums.androidcentral.com/showthread.php?t=409154

 

[JagsDhool]

Thanks for replying

 

[mustang7757]

Thanks for replying

Hi, welcome!

Definitely , glad to help you in anyway!

 

[JagsDhool]

Yes, I want an unlocked version.

 

[mustang7757]

Ok perfect , I can help with this and give you a guidelines to follow one second

 

[mustang7757]

This is the steps :

Windows computer needed

Latest Odin can Google it and download should be 3.13.1 or 3.14.1 / or Frija tool

Download samfirm v0.4.1 tool , extract it with 7zip.

You will extract files for Odin prince comsey 3.13.1once download with 7zip and will do same for firmware with 7zip .

There will be 4 files after you extract the firmware

BL

AP

CP

CSC

Each of those files will go in Odin when you open to the corresponding slots

BL

AP

CP

CSC USE HOME CSC FIILE TO SAVE DATA

Home data slot dont put nothing

connect your phone with cable to computer , once the files are in its slots hit start, once done you'll see pass in Odin and it will reboot



Put your model number G955U1 ...region XAA select check for updates , then download the Rom , extract the Rom with 7zip.


*Make sure you put phone in download mode
*If dont see your phone connected in Odin change cables or ports in computer .

 

[mustang7757]

Follow this exactly and you will be on the unlocked firmware put regular csc not home because going from carrier firmware to unlocked will factory reset your device so do a back up before u start

 

[JagsDhool]

Samfirm Shows this when I check for update.

 

[mustang7757]

View attachment 322559
Samfirm Shows this when I check for update.

Strange , try frija

 

[JagsDhool]

Thank You My Friend. It worked. Thanks a lot.

 

[mustang7757]

Thank You My Friend. It worked. Thanks a lot.

Your are welcome!, glad I could help you