Samsung S7 Edge - Re-lock the Bootloader Help Needed - Samsung Galaxy S7 Edge Questions and Answers

Hello,
I flashed my Samsung S7 edge to custom ROM, Later i decided to go with the Stock ROM and done so, but seems still the bootloader is unlocked.
I want to re-Lock by bootloader again, can some one help on how to do that ?
Thanks

What do you want to do that for ?? Leave it like this, because if you have a problem with sofware it will be easier to repair.

Dark Stranger said:
What do you want to do that for ?? Leave it like this, because if you have a problem with sofware it will be easier to repair.
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Thanks for the response, I have an compelling reason to do that, which is my office work profile (office emails) have stopped working because of the bootloader unlock.
Any help on how to lock back will be very helpful.

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[Q] GS5 KDI AU lollipop upgrade lock.

Thank you everybody in advance for the help you may provide.
Please could you help me to understand if i can fix my scl23?
This is the thing.
I got myself a KDI au gs5 scl23 with kitkat 4.4 and as i understand its rooted with a custon recovery, beacaus of the sim unlock, and the recovery its in japanese.
The phone works fine, but when i try to use it on ultra saving mode, its says that it`s samsung account isnt activated and doesnt allow me to change it(in the settings of the phone there isnt a way to change samsung account). So it bugs on that samsung account, and doesnt allow me to use internet and the keyboard when im on the ultra saving mode. By the way i live in Argentina and cant find anyone who speaks Japanese.
So, Trying to fix this samsung account problem i upgraded to lollipop 5.0, but it lock the phone and it doesnt get any antena signal, its says insert a sim, but there is no "no sim" mesage on the mesage board.
And now im dowloading the 4.4 firmaware files to downgrade it to 4.4 and to unlock it whith service menu commands.
Have anyone been able to unlock it with service menu on lollipop, or in any other way? Beacuase lollipop fixes the samsung account problem but olso locks the phone and installs custom AU rom, only in japanese or english laguage.
Thank you very much to everyone.
same here
This is the same thing that happened to me, did you manage to revert back and unlock the simlock on 5.0? Any luck upgrading to 5.0 and using your sim with the device.
cheers
kinsten said:
This is the same thing that happened to me, did you manage to revert back and unlock the simlock on 5.0? Any luck upgrading to 5.0 and using your sim with the device.
cheers
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Click to collapse
Ended up downloading the 4.4 rom for phone again, installing that. Had to clear cache and do factory data clear to get phone booting again after downgrading. Then I was able to complete the Sim Unlock steps outlined here
http://forum.xda-developers.com/galaxy-s5/general/tutorial-unlock-sim-au-kddi-galaxy-s5-t2891992
Super frustrating using a phone like this, as it has so much bloatware from Japan which I just want to get rid of. But up and running now, with several replacement mods for keyboard, messenger etc
A lot of information out there, thank you internet and forums like this one for having so much information to get things working again. :victory:

S7 Edge SM-G935 Carrier Locked Issue

Hey there,
Long time admirer, not a big poster. More of a reader. I couldnt find anything relevant to my question hence the thread.
So from what Ive gleaned on xda the G935 version can be rooted, my question is can I bypass a carrier lock through a custom ROM or would this be possible just by rooting?
A friend has a G935 that has been blocked to Optus and I was wondering if I could help him resolve the issue and help him bring it over to Telstra by some "black magic" as he calls it.
Thanks in advance for any responses
any suggestions, i have the same issue
Ive tried unlocking rooted phones before myself with no luck. Not sure if its possible without some special hardware and programs. There is a guy on here that has unlocked my sprint s7e and lg g5 before. He hooks up to u remotely and runs a program. I think he charges 15$ and it works 100% till u factory reset. Search "sprint unlock" and u will prob run across a couple of his threads. U can ask him if your model is compatible with his method
He can unlock without rooting your phone

[Q] Root AT&T’s S5 Active SM-G870A for use in Germany?!

Hi there,
I would love to buy a S5 Active in the U.S. an use it in Germany. Since it is looked to AT&T which we don't have in Germany, I want to root it.
For the past 2 days I did some research in this forum. It turned out that it's more complicated than I thought.
My English is not that good, so before I actually buy a phone I want to make sure that I understood everything... more or less.
So, if I get my hands on a phone with 4.4. or 5.0 on it, there is no problem to root it because there is no blocked bootloader, right?
I don't know though which ROM I should use in that case? Which one runs best on the S5 Active?
If the phone is running on 5.1. there is the problem with the locked bootloader, right? In that case I use this guide?
If I get a phone that is running on 6.0 or 6.1 I need to downgrade to 5.0 or 5.1 using this guide and the just do one of the two steps above accordingly?
Does that mean it doesn't matter if the phone I buy runs on 4.4, 5.0, 5.1, 6.0, or 6.1? Can I root in anyway?
Thanks heaps for your help!
Cheers Sam
you dont need to root it for international use. If its not bound to a contract with at&t anymore, then youd just need to contact at&t to have them unlock it for international use. if youre worried about the cost to call at&t, just get the textnow app, get a usa phone number and call them via the app over wifi for absolutely no cost. or, if your worried about your english being a barrier, go to idoneapps.com and they can unlock it for you for $35. I unlocked 2 G900P (sprint S5) with them.
Hi, thanks for the quick reply.
Well, I also though about just getting a unlocked one or to unlock a locked one. BUT then I have all those atnt Apps that I can't uninstall.
So I figured, the only way to get rid of them is to root the device right?
Cheers, Sam
unclesamile said:
Hi, thanks for the quick reply.
Well, I also though about just getting a unlocked one or to unlock a locked one. BUT then I have all those atnt Apps that I can't uninstall.
So I figured, the only way to get rid of them is to root the device right?
Cheers, Sam
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Click to collapse
youre correct, those specific apps do require root to remove. Then youd want something like Titanium backup to get that job done
I havent found anything so far that will show me how to root a G870A ACTIVE on 5.0 (OF3) all these links go to methods that show how to do it on a G900 (non active) if anyone can point me in a direction that would work i would much appreciate it.
electric101 said:
I havent found anything so far that will show me how to root a G870A ACTIVE on 5.0 (OF3) all these links go to methods that show how to do it on a G900 (non active) if anyone can point me in a direction that would work i would much appreciate it.
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i think the bootloader is still locked on that device. Not getting much love from devs either. Not sure there is a solution for this, sorry good sir
Well I received the SM-G780A today. It is not locked to AT&T anymore so I can actually use it without rooting it.
However the preloaded apps are just a pain. So I am thinking about rooting it anyway.
The Android Version is 5.0 and the Kernel Version 3.4.0-4443965. Do I understood it right that the bootloader is not locked in Androit 5.0 yet?
What's the best way to root it and is there any chance to get a rooted Android 6 running on it?
Cheers Sam

How to unlock bootloader and get TWRP?

Dear XDA Members and U Ultra owners,
I just recently purchased the U Ultra sapphire glass edition 128GB Dual Sim and I would really like to install the deodexed firmware with root that's available. However, in order to flash that firmware, I think first I'd need to unlock the bootloader and get TWRP? Is there a current guide on how to unlock bootloader and side load TWRP?
I'm familiar with the whole process just haven't seen a guide for this phone as of yet, or at least haven't looked well enough to find one. I thought I'd ask here and it would make it a little bit easier.
I have unlocked bootloader on many phones before and I was wondering if it's the same process for this phone... Do I have to unlock it through HTC Dev? And what about TWRP, where can I find it for this phone? The website? Or is there a custom build version for this phone since its not that popular?
Any and all help will be greatly appreciated.
So I guess I found out where to get the recovery from... Does this work with the dual sim version? https://forum.xda-developers.com/u-ultra/development/recovery-twrp-touch-recovery-t3558540
I guess the only thing left now is the bootloader. I could use some advice on that.
malimt said:
So I guess I found out where to get the recovery from... Does this work with the dual sim version? https://forum.xda-developers.com/u-ultra/development/recovery-twrp-touch-recovery-t3558540
I guess the only thing left now is the bootloader. I could use some advice on that.
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I managed to figure it out. I attempted to unlock the bootloader through HTC Dev website which was a fairly simple process as I've done this several times before. I'm just waiting on the email for the unlock.bin file and for some reason it's taking its time and I've not received it yet, been well over an hour. Odd isn't it? Or is this normal?
Now I guess my only question is the S-on/S-off.
I remember with HTC M9 and 10 you had to use sunshine to s-off. Is that also required with the u ultra?
Sorry, forgot to make an update letting everyone know that all of this was taken care of successfully, I'm currently rooted and on a deodxed 8.0 Rom with magisk and twrp. Everything going great!
hello and thank you for this monologue ...
I am on the site of HTC dev but in the choice of the phone there is no U Ultra, is it normal?
Would it be easy to tell me more about the S-off method, and more, please?

Tab a firmware.

Hi all very new to this and wondered if someone could help. Trying to install new firmware on a Samsung tab a 10.1. My tablet is currently locked to the company that provided it who have now gone bust. I am under the impression I can install new firmware from my pc to crack the lock. I have installed Odin and Samsung drivers but no idea where to get the firmware. Any help much appreciated
Matches1973 said:
Hi all very new to this and wondered if someone could help. Trying to install new firmware on a Samsung tab a 10.1. My tablet is currently locked to the company that provided it who have now gone bust. I am under the impression I can install new firmware from my pc to crack the lock. I have installed Odin and Samsung drivers but no idea where to get the firmware. Any help much appreciated
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If only it were that easy. The knox lock is in the bootloader, which isn't affected by flashing new firmware. This is, afterall, theft protection and if were easy to break, it would be useless. The only possibility I can think of, is that there is sometime a PAID service which will unlock the bootloader on SOME Samsung devices. Try googling SamPWND.
MaNy thanks for your help.

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