[Q] How to UnRoot? - Galaxy S III Q&A, Help & Troubleshooting

Hi,
I need to get my s3 unlocked quickly because i'm going away tomorrow.
I took it to a store and asked them if it would affect the warranty. He said that if it gets rooted, then yes. He said he would check and connected it to his laptop.
Before I knew it, the phone was rooted. He tried to cancel it but it appears to be too late. (and the simlock is still in place).
The phone has had problems and been repaired a few times under warranty. So I dont want to lose the warranty.
How can I unroot the phone back to how it was?
Also, if the phone gets rooted and unlocked, can I re-unroot it and re-lock it in the event I need to make a warranty claim?
Thanks
Dan

We have faqs and guides no need for this question .
See How to return to stock for warranty thread .

Related

[Q] Device Encryption & Warrenty

I was wondering if anyone's heard of encrypting the device voiding the warranty.
Also, if I lose the password and have NOT rooted the phone and have NOT turned on USB debugging, is there some way to do a factory reset on it? (I don't plan on rooting my phone anytime soon)
I have a Samsung Galaxy S II.
Thanks
You can factory reset the device from the bootloader. No need for rooting.
Thanks, however...
Thanks, however it appears that enabling the bootloader voids the warranty, making it almost as undesirable as rooting to me.
Is there a way to do the factory reset without voiding the warranty when I've locked myself out?
(Also, it'd be nice to have my other question answered)
Thanks again
P.S. I clicked on the "tip us?" link on this thread and it says I voted...I'm not sure what that means though. I had javascript disabled so that may be effecting it.
isaac3 said:
Thanks, however it appears that enabling the bootloader voids the warranty, making it almost as undesirable as rooting to me.
Is there a way to do the factory reset without voiding the warranty when I've locked myself out?
(Also, it'd be nice to have my other question answered)
Thanks again
P.S. I clicked on the "tip us?" link on this thread and it says I voted...I'm not sure what that means though. I had javascript disabled so that may be effecting it.
Click to expand...
Click to collapse
Shut down the device, then Volume Up + Power will take you to a menu.. You can factory reset from there. It won't void your warranty. Don't know whether encrypting would void the warranty..

SGP321 looses gsm signal

I bought this tablet 2 months ago in our local t-mobile. And everything was fine until 2 weeks ago when it suddenly started loosing gsm signal.
At first i thought it had something to do with me rooting it. So i tried repairing it 2 times but with no luck. After that i tried downgrading to 4.1.2 and that didn't work either.
So basically i can be online (surfing,downloading etc.) for few minutes before it drops gsm signal (no signal icon in statusbar) and after few minutes it comes back and then it drops again...
I'd like to know if it can be fixed without taking it to nearest sony repair service. Did anyone encounter similar problem and manage to fix it?
btw bootloader is locked (unlock allowed: no) so flashin another kernel/ROM is out of the question...
wh15tler said:
I bought this tablet 2 months ago in our local t-mobile. And everything was fine until 2 weeks ago when it suddenly started loosing gsm signal.
At first i thought it had something to do with me rooting it. So i tried repairing it 2 times but with no luck. After that i tried downgrading to 4.1.2 and that didn't work either.
So basically i can be online (surfing,downloading etc.) for few minutes before it drops gsm signal (no signal icon in statusbar) and after few minutes it comes back and then it drops again...
I'd like to know if it can be fixed without taking it to nearest sony repair service. Did anyone encounter similar problem and manage to fix it?
btw bootloader is locked (unlock allowed: no) so flashin another kernel/ROM is out of the question...
Click to expand...
Click to collapse
Have you tried factory resting it ? Also you can unlock the boot loader just search xda im sure ive seen a guide somewhere ? i was going to say take it back to Sony as it might be a hardware problem but since you have rooted it your warranty has been voided...
N1NJATH3ORY said:
Have you tried factory resting it ? Also you can unlock the boot loader just search xda im sure ive seen a guide somewhere ? i was going to say take it back to Sony as it might be a hardware problem but since you have rooted it your warranty has been voided...
Click to expand...
Click to collapse
Well firmware flashing via SUS repair option usually does that for me.. but yeah, i tried factory reset as well. And about bootloader unlocking i've been searching for a guide ever since i bought it. No such luck... Apparently if it's "bootloader unlock allowed: NO", it's meant to stay that way. At least until someone finds a way around it.
I've got a vague idea about how does rooting work and that tells me if i did a complete wipe and flashed my tablet, how can they detect it?
I mean.. it's a complete reinstall, how are they supposed to know that the tablet was rooted on previous firmware if it currently isn't?
wh15tler said:
Well firmware flashing via SUS repair option usually does that for me.. but yeah, i tried factory reset as well. And about bootloader unlocking i've been searching for a guide ever since i bought it. No such luck... Apparently if it's "bootloader unlock allowed: NO", it's meant to stay that way. At least until someone finds a way around it.
I've got a vague idea about how does rooting work and that tells me if i did a complete wipe and flashed my tablet, how can they detect it?
I mean.. it's a complete reinstall, how are they supposed to know that the tablet was rooted on previous firmware if it currently isn't?
Click to expand...
Click to collapse
Well im no pro, but don't they have some kind of binary counter witch tells the manufactures the devices has been rooted ? i know that's how Samsung goes about identifying if the devices has been rooted... But Sony im not too sure, Also your theory does hold ground, if you clean install from the ground up then Sony shouldn't be able to tell, if the device has been rooted, also you do know that Sony have a guide on there website on how to unlock the boot loader ? Here check it out http://developer.sonymobile.com/services/unlock-bootloader/
N1NJATH3ORY said:
Well im no pro, but don't they have some kind of binary counter witch tells the manufactures the devices has been rooted ? i know that's how Samsung goes about identifying if the devices has been rooted... But Sony im not too sure, Also your theory does hold ground, if you clean install from the ground up then Sony shouldn't be able to tell, if the device has been rooted, also you do know that Sony have a guide on there website on how to unlock the boot loader ? Here check it out...
Click to expand...
Click to collapse
I know about that website. That's how i unlock every sony i come across that needs unlocking :laugh:
But it also says if the "Bootloader unlock allowed" is NO in service menu, then there is no hope for unlocking the bootloader. At least not officially.. until someone comes with a solution for that..
So i managed to get some extra details on that problem.
Apparently i can't get LTE signal anywhere. And when i get LTE, connection automatically drops.
Could it be that the LTE chip is faulty? Does that mean that i'll probably get another device... because somehow i doubt that theyll try to replace the motherboard

Wrong Information for UB Code

Good Morning guys,
I plan to unlock my bootloader in the next few days. But I don't want to type in my real imei number, because if I have to send the phone in they might check and regret warranty.
So: Is ist possible to type in bull**** in the form or is the unlock code generated via the imei and I risk hard bricking the phone? And is there a counter which says that it was once unlocked if it is locked atm?
Thanks In advance
No this will not work!
The unlock Code will be generated specially for your IMEI, so a Unlock Code for a bull**** IMEI will not work.
Also I know (mostly from other manufacturers) that the "void warranty" is mostly because the manufacturer does not want to repair phones which are bricked for free.
If you have a hardware-defect, the manufacturer will repair your phone. The only situation I know where a manufacturer did not repair a phone, was because the phone was overheated and defective, because someone overvolted the phone via modified kernel.
So ... normally it will not "really" void your warranty.
simply relock your bootloader and flash a stock rom before sending it in

Relocking bootloader and potential problems with warranty

Some people say that relocking bootloader can be recognised by LG service:
http://forum.xda-developers.com/showthread.php?p=67392251
What is your experience with repairing phone after relocking bootloader? Your answers can help to people to take a decision about unlocking bootloader. Thanks.
I'm also interested in the subject.
It depends on what is broken due to your fault or not. See http://www.howtogeek.com/240417/does-rooting-or-unlocking-void-your-android-phones-warranty/
TLDR: If you break your phone du to overclocking, which was achieved with unlocking your device && rooting it, you're out of luck. If you get random reboots, which is a software thing it could get tricky and the warrenty may not be there for you then.
But for everything else hardware related it's not the roms fault. The company will fix it anyway. I sent devices in from HTC, LG and Samsung which were all rooted and unlocked. No problems so far. I live in Germany, just sayin
saschb2b said:
It depends on what is broken due to your fault or not. See http://www.howtogeek.com/240417/does-rooting-or-unlocking-void-your-android-phones-warranty/
TLDR: If you break your phone du to overclocking, which was achieved with unlocking your device && rooting it, you're out of luck. If you get random reboots, which is a software thing it could get tricky and the warrenty may not be there for you then.
But for everything else hardware related it's not the roms fault. The company will fix it anyway. I sent devices in from HTC, LG and Samsung which were all rooted and unlocked. No problems so far. I live in Germany, just sayin
Click to expand...
Click to collapse
When i went with my previous phone (samsung S5+) in a Samsung Repairs they told me warranty is not void as long as phone is not rooted or bootloader unlocked (knox 0x1). Now if the motherboard is faulty and is to be replaced then they won't find out about root and knox fuse but if they replace other components and boot the phone and find the knox fuse 0x1... warranty is void. That is my understanding.
In the case of LG G5 one has to unlock the bootloader via LG de site and then that device will show up in their "unlocked devices" list with some sort of identification (of the device and user). If one sends his/her G5 to service it would be interesting to find out if LG actualy checks to see if that device has been unlocked or not.
I live in Romania and in my experience when warranty is involved the people at the repair centers do search if phone are rooted and bootloader unlocked and cancel warranty.
Getting unlock.bin doesn't mean that you used it.
vader20 said:
When i went with my previous phone (samsung S5+) in a Samsung Repairs they told me warranty is not void as long as phone is not rooted or bootloader unlocked (knox 0x1). Now if the motherboard is faulty and is to be replaced then they won't find out about root and knox fuse but if they replace other components and boot the phone and find the knox fuse 0x1... warranty is void. That is my understanding.
In the case of LG G5 one has to unlock the bootloader via LG de site and then that device will show up in their "unlocked devices" list with some sort of identification (of the device and user). If one sends his/her G5 to service it would be interesting to find out if LG actualy checks to see if that device has been unlocked or not.
I live in Romania and in my experience when warranty is involved the people at the repair centers do search if phone are rooted and bootloader unlocked and cancel warranty.
Click to expand...
Click to collapse
Knox is a samsung thing just to be clear http://omegadroid.co/wanted-knox-void-warranty-0x1/

Dead Moto Z!

Last thing i remember is my phone restarting everytime after flashing the 540mb OTA. So i did some stupid ****. First i did a factory reset from the stock recovery, the flashed the nougat firmware. Then i noticed that there was no internal drive, so i ran this code "fastboot flash partition gpt.bin" and my phone was dead after that.
So i took it to the service centre, and they told me that they're going to replace the motherboard. My only concern is the unlocked bootloader. After they replace the mobo, are they gonna see the unlocked bootloader warning?? coz if they do.. it'll be a mess :crying:
Surely the new mobo will have a locked bootloader again, and a new IMEI. It'd be like a new phone
Replacing the motherboard usually means an entirely new phone internally.
Which means it also has a different bootloader from the one you originally had. Chances are that it'll be locked and you'll have to unlock it again.
It's also a good idea from this point on to have a factory image for the stock firmware lying around in your desktop just in case an update causes a softbrick.
supacrazyguy42 said:
Surely the new mobo will have a locked bootloader again, and a new IMEI. It'd be like a new phone
Click to expand...
Click to collapse
Thank god
D13H4RD2L1V3 said:
It's also a good idea from this point on to have a factory image for the stock firmware lying around in your desktop just in case an update causes a softbrick.
Click to expand...
Click to collapse
I do. I have both MM and Nougat firmwares on my pc. This time it was a hard brick. And i'm not going to unlock my phone this time. There's no way to relock the bootloader.
Just got a call from Motorola. They told me that my phone is rooted and it won't be covered under the warranty :'( And they're asking for 80% of the price of the phone to repair it. My only option is to get the motherboard from somewhere and repair it myself. Can someone please send me a link to buy the Mobo for Moto z?

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