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[Q] Got my phone unlocked - but they rooted it - can I unroot?

I recently had my Orange Galaxy S2 i9100P unlocked by the local phone shop.
The unlocking worked fine, but I have now noticed that it has been rooted too.
It has a superuser app installed, which he said he didn't realise it had installed.
Not sure that I want it to be rooted when I sell it as it might put off potential buyers.
So I called the shop and asked if it has to be rooted to unlock it and he said that it does.
He said that the other way to unlocked it is to use a code but that system is currently down (the website that gives out codes) and it would cost £26 instead of the £10 that I paid to have it unlocked using root. I asked him if I could unroot it by flashing with the standard Orange firmware (using Keis) and he said yes I could and that would unroot it. When asked that if this would then lock it again he said that no it shouldn't, but he didn't seem too sure about what he was saying.
So some specific questions:-
1) Did he have to root it to unlock it?
2) Did it have to be left in root once unlocked?
3) Can I unroot it and return to standard firmware (using Keis) and it still remain unlocked?
4) If the answer to 3) is no, then can I delete / uninstall the superuser app?
5) When I run the superuser app, there is a temp unroot option. What does that do? Can I use that to unroot it?

MrModbus said:
1) Did he have to root it to unlock it?
2) Did it have to be left in root once unlocked?
3) Can I unroot it and return to standard firmware (using Keis) and it still remain unlocked?
4) If the answer to 3) is no, then can I delete / uninstall the superuser app?
5) When I run the superuser app, there is a temp unroot option. What does that do? Can I use that to unroot it?
Click to expand...
Click to collapse
1. Yes root was required to unlock from the carrier. Or else you had to pay full price to get the unlock.
2. Not exactly! If he made a permanent change then no need, But if he's using something dependent to unlock it then it needs to be rooted.
3. Not sure, cause if the stock Orange firmware finds the phone as locked it might re-lock it again. So there's a risk. If you can find a fresh carrier free firmware for your model why not flash that?
4. I used SuperSU there's an unroot button there but nothing that says 'Temporary'. But if the root binaries are once flashed I'm not sure that gets rid of it.
Just trying to be helpful.

Tiash420 said:
1. Yes root was required to unlock from the carrier. Or else you had to pay full price to get the unlock.
Click to expand...
Click to collapse
Ah OK.
Tiash420 said:
2. Not exactly! If he made a permanent change then no need, But if he's using something dependent to unlock it then it needs to be rooted.
Click to expand...
Click to collapse
How do you mean? Are you saying that there is another appliocation that is running that is performing the unlock and that needs root to do its stuff?
Tiash420 said:
3. Not sure, cause if the stock Orange firmware finds the phone as locked it might re-lock it again. So there's a risk. If you can find a fresh carrier free firmware for your model why not flash that?
Click to expand...
Click to collapse
That is an option. But Last time I looked (a few years back) I couldn't find any i9100P specific unbranded firmware. There was i9100 firmware, but that didn't support the i9100P NFC chip.
Tiash420 said:
4. I used SuperSU there's an unroot button there but nothing that says 'Temporary'. But if the root binaries are once flashed I'm not sure that gets rid of it.
Click to expand...
Click to collapse
My app is just called "superuser" and is at v3.1.3. I suppse that I could try the temp unroot and see what happens.

Yes, I'm saying there might be some app keeping the unlock alive. Cause that's how I unlocked my iPhone 4, quite a lot of times. :3
And you should search again for unofficial rom.
And also try the temporary unroot button.

Rightho, I have now moved over to the S5 and I would like to get my S2 ready for sale.
Someone mentioned earlier that Keis might not recognise the device. Well you are correct it doesn't and will not let my flash. I does not recognise it as a Samsung device.
So I would like some generic I9100P firmware that supports NFC.
I would also like to unroot the device.
Current firmware is V4.1.2
Baseband version is I9100PBVLS2
Kernel is 3.0.31 - 1246097
[email protected] - 109 #3
SMP PREEMPT Tue Jun 4 15:49:20 KST 2013
Build number is JZO54K.I9100PXXLSS
I do not get a yellow warning triangle so I assume that it is a secure kernel.
So can anyone help me to:-
1) Unroot the device.
2) Get it so that Keis will talk to it again.
3) Keep it unlocked
4) Get a secure kernel if mine is insecure.

MrModbus said:
Rightho, I have now moved over to the S5 and I would like to get my S2 ready for sale.
Someone mentioned earlier that Keis might not recognise the device. Well you are correct it doesn't and will not let my flash. I does not recognise it as a Samsung device.
So I would like some generic I9100P firmware that supports NFC.
I would also like to unroot the device.
Current firmware is V4.1.2
Baseband version is I9100PBVLS2
Kernel is 3.0.31 - 1246097
[email protected] - 109 #3
SMP PREEMPT Tue Jun 4 15:49:20 KST 2013
Build number is JZO54K.I9100PXXLSS
I do not get a yellow warning triangle so I assume that it is a secure kernel.
So can anyone help me to:-
1) Unroot the device.
2) Get it so that Keis will talk to it again.
3) Keep it unlocked
4) Get a secure kernel if mine is insecure.
Click to expand...
Click to collapse
Flash a custom recovery through Odin and then backup your current Rom. And then find flashable-zip official firmwares and then flash and see results. If anything goes wrong revert back to the old firmware.

The solution seems to be to download and install firmware XXLSU Android 4.1.2 Jelly Bean.
This will install a generic unlocked stock ROM and generic firmware, which is just what I need.
See here.
w w w.ibtimes.co.uk/galaxys2-i9100p-xxlsu-android412-jellybean-update-install-501998
However, I am not able to find the update ROM / Firmware files as all the links in all the websites that I have found are all dead.
I have founf some working links but this is for Spanish / French versions. Will these be OK?

MrModbus said:
The solution seems to be to download and install firmware XXLSU Android 4.1.2 Jelly Bean.
This will install a generic unlocked stock ROM and generic firmware, which is just what I need.
See here.
w w w.ibtimes.co.uk/galaxys2-i9100p-xxlsu-android412-jellybean-update-install-501998
However, I am not able to find the update ROM / Firmware files as all the links in all the websites that I have found are all dead.
I have founf some working links but this is for Spanish / French versions. Will these be OK?
Click to expand...
Click to collapse
Keep in mind to use the firmware with the right "MODEM" version. SamMobile offers the firmware version(s) you are looking for. BUT don't risk flashing another firmware, if its much more easy. Install "SuperSU" from the play store. Open it an switch ROOT to "SuperSU", you will be prompted to uninstall the current superuser (root). Accept it. Reboot your phone. Open SuperSU and perform "Complete Unroot". Thats it

Ok that will unroot it but stay with orange firmware and be re-locked to orange?
I was wanting a generic ROM and firmware that supports NFC.
SamMobile has the I9100PXXLSU firmware which I believe I need. However, it has 2 versions:-
Date Country/Carrier Version PDA CSC MODEM
2013 August France 4.1.2 I9100PXXLSU I9100PXEFLS3 I9100PXXLS8
2013 August Spain (Vodafone) 4.1.2 I9100PXXLSU I9100PATLLS6 I9100PBULS3
Should I be concerned about the carrier / country?
You say get the correct MODEM version but how do I know what the correct one is?
My current details are:-
PDA: I9100PXXLSS
PHONE: I9100PBVLS2
CSC: I9100PPORALS6
Please can someone just tell me where I can get a generic ROM / firmware and tell me which one I should be using.
It all seems to be riddles and cryptic clues.
I am confident of downloading the ROM / firmware using ODIN, but I just want to know what to download.

MrModbus said:
Ok that will unroot it but stay with orange firmware and be re-locked to orange?
I was wanting a generic ROM and firmware that supports NFC.
SamMobile has the I9100PXXLSU firmware which I believe I need. However, it has 2 versions:-
Date Country/Carrier Version PDA CSC MODEM
2013 August France 4.1.2 I9100PXXLSU I9100PXEFLS3 I9100PXXLS8
2013 August Spain (Vodafone) 4.1.2 I9100PXXLSU I9100PATLLS6 I9100PBULS3
Should I be concerned about the carrier / country?
You say get the correct MODEM version but how do I know what the correct one is?
Please can someone just tell me where I can get a generic ROM / firmware and tell me which one I should be using.
It all seems to be riddles and cryptic clues.
I am confident of downloading the ROM / firmware using ODIN, but I just want to know what to download.
Click to expand...
Click to collapse
Vodafone firmware is Vodafone branded, so i won't use it as its probably highly customized by vodafone. The France version should not have a branding. You can check your modem version in Android: "Settings-->about Phone". If you get you right, you want to sell a branded phone as unbranded and potentially next owner may not know. sounds not very good

I was just trying to get rid of all the ornage bloatware. If someone wants to use a different network operator, they might not want all the orange stuff on there. I was certainly not wanting to trick anyone. I suppose I could just unroot it and leave it as it is (it is obviously an orange branded phone as it has orange logos on it). Or I could just download the standard orange ROM / Firmware and return it to stock. My worry is that this will lock it again. I keep asking this question but no one seems to give me a straight answer if it will or not. Maybe it is an unknown. As I am a newby I have no idea.

MrModbus said:
I was just trying to get rid of all the ornage bloatware. If someone wants to use a different network operator, they might not want all the orange stuff on there. I was certainly not wanting to trick anyone. I suppose I could just unroot it and leave it as it is (it is obviously an orange branded phone as it has orange logos on it). Or I could just download the standard orange ROM / Firmware and return it to stock. My worry is that this will lock it again. I keep asking this question but no one seems to give me a straight answer if it will or not. Maybe it is an unknown. As I am a newby I have no idea.
Click to expand...
Click to collapse
I suppose its hard to say, because no one but the shop owner exactly knows what method was used to unlock the phone. Thats the reason why there is no guarantee that the unlock survives a firmware flash. If you just want to get rid of unwanted apps, you can use "Titanium Backup" to uninstall whatever you want. I would never use a non rooted phone again, so may be the new owner is happy that its already rooted

LS.xD said:
Keep in mind to use the firmware with the right "MODEM" version. SamMobile offers the firmware version(s) you are looking for. BUT don't risk flashing another firmware, if its much more easy. Install "SuperSU" from the play store. Open it an switch ROOT to "SuperSU", you will be prompted to uninstall the current superuser (root). Accept it. Reboot your phone. Open SuperSU and perform "Complete Unroot". Thats it
Click to expand...
Click to collapse
Yeah this works, if you really wanna get rid off the orange BS. Just uninstall all the BS with Titanium Backup and then simply unroot. :3 And the device fresh and unlocked and not rooted without the BS. :3 And everybody's happy, right?

Can a root device be upgraded?

Hi all
A week ago a rooted my Samsung Galaxy S6 device following this post: http://forum.xda-developers.com/galaxy-s6/general/root-pingpongroot-s6-root-tool-t3103016
All was OK. At that point my device is using the Android Version: 5.0.2
The question I have is that now the version 5.1.1 (Lillipop) has been released, I would like to know if my rooted device can still be upgrading when the new version is released in my region (Mexico) by the phone provider. (Telcel). In case it cannot be updated automatically, I guess I will need to do it manually or unroot my device. In that scenario, Does someone know a good tutorial how to do that?
Regards!

@LesthadMK, sure you can update rooted devices. But it may not be possible via OTA update. You will have to download the full firmware and install it manually.
Because root makes changes to system partition, OTA fails when you have rooted. If you unroot and flash stock recovery and kernel back, then OTA may work. Otherwise, simply flash the full firmware, in .tar format using Odin software, and you're good.
It's good to have full firmware saved on PC anyway, as if in case you brick your device, you can fix it by installing your device's firmware manually.
If you need help with 5.1.1 firmware installation on your s6, let me know the build no. of your device.. I will guide you to page you need to look at.

Thanks for the help. I have download Odin in case I need to do it manually.
Also, mentioned that yesterday I read an article saying that using the Samsung software "Smart Switch" in an rooted device will upgrade the device to the newest version (which I don't know if it it's true or not) Any way this is the link I found:.... Well seems since I'm newby I cannot post some external links. So just google it as: How to Use Smart Switch to Update Your Galaxy S6—Even It's Rooted.
By other hand, this is the build number for my device: G920IDVU1AOE3, so if you can help me to know how to upgrade that version that would be very helpful
Regards!

Tmobile pushed a 60mb update to my LG Stylo this morning? What to do?

Hello Folks
This morning I noticed, Tmobile pushed a 60mb update to my phone. I am rooted and unlocked but not on a custom rom.
Please advice what I need to do.
Thanks in advance
Regards

Is there any issuse with the update

I have not updated. As I mentioned I am rooted and unlocked. Not sure what to do hence posted my question in the forum.
I do not want to lock the bootloader. Just curious to see what others who might have got this update are doing about it.
Regards

Roism said:
I have not updated. As I mentioned I am rooted and unlocked. Not sure what to do hence posted my question in the forum.
I do not want to lock the bootloader. Just curious to see what others who might have got this update are doing about it.
Regards
Click to expand...
Click to collapse
1. You don't have to worry about lock bootloader
2. Which Software version are you running? v10e, v10i or v10j?
3. If you update there is a way to downgrade cuz we have previews KDZ's

I am running version 10i,
I am guessing tmobile wants to upgrade me to v10j. Is there a flash able version for 10j that I can use?
Thanks

Roism said:
I am running version 10i,
Thanks
Click to expand...
Click to collapse
Ok, you can go here and update to the latest version v10j using @GameTheory. V10j Full update/pre-rooted/untouch TWRP.
http://androidforums.com/threads/me...-v10j-rom-flashable-updated-9-26-2015.926221/

Thanks Draken,
Issue resolved
Regards

getting "error" when trying to install 60mb OTA update?
I was rooted on 5.1.1 (t-mobile version) but I unrooted via SuperSU app ( at least I think it unrooted)
and now each time I try to update I get the "error" and have to pull the battery out
before I unrooted I tried to "flash" 10vj Update but I do not know how to flash and it failed
this is my first time rooting any device and I was also unsuccessful at trying to download twrp
as a noob I am apologetic that I do not know such things
but I need help and really don't want to miss out on the marshmallow update
when it comes out in a couple months someone help????how do i fix this i will
need the easiest solution explained in great detail if possible
I really love this phone!!!
:crying:

lovejunkie777 said:
I was rooted on 5.1.1 (t-mobile version) but I unrooted via SuperSU app ( at least I think it unrooted)
and now each time I try to update I get the "error" and have to pull the battery out
before I unrooted I tried to "flash" 10vj Update but I do not know how to flash and it failed
this is my first time rooting any device and I was also unsuccessful at trying to download twrp
as a noob I am apologetic that I do not know such things
but I need help and really don't want to miss out on the marshmallow update
when it comes out in a couple months someone help????how do i fix this i will
need the easiest solution explained in great detail if possible
I really love this phone!!!
:crying:
Click to expand...
Click to collapse
dummy you can't update that way you must remove all traces of root which the app can't do use the KDZ

If you are rooted and it says system update DO NOT INSTALL IT... it will brick your phone
Sent from my SM-G530T using Tapatalk

HTC M10 (HTV32) Japan Oreo TWRP backup

Hello mates,
I recently got a used HTC M10 device with boot-loader unlock and s-off I'm using this device outside japan with different network carrier this device have currently 6.0 installed and i want to update it to Oreo but can't update it through settings, I have attached a screenshot of my device info, i'm confuse if i flash this device with other version will it lock the network? or can my device convert to international and receive updates? please help me as i don't want to brick my device.

timimalik said:
Hello mates,
I recently got a used HTC M10 device with boot-loader unlock and s-off I'm using this device outside japan with different network carrier this device have currently 6.0 installed and i want to update it to Oreo but can't update it through settings, I have attached a screenshot of my device info, i'm confuse if i flash this device with other version will it lock the network? or can my device convert to international and receive updates? please help me as i don't want to brick my device.
Click to expand...
Click to collapse
Did you get any solution.I am having a m10 au version too. Want to flash custom rom.But afraid of bricking my device.

dr.estiack said:
Did you get any solution.I am having a m10 au version too. Want to flash custom rom.But afraid of bricking my device.
Click to expand...
Click to collapse
Hello mate, i found a solution and successfully update my device to Oreo officially i just changed the CID and MID back to KIDDI japan au and downloaded the marshmallow official flash zip file (https://drive.google.com/open?id=1noyAV4mGLTRNGaXqbdweRHsARWZ9J6LH) and install it by placing it to Mirco SD card after installation i went to software update and updated to Oreo. PS: my device were network locked while i were trying to convert it to international version but after flashing it unlocked automatically probably i flashed the wrong version. let me know in case of any problem.

[G955F] Flashing a stock rom: Warranty void?

Hello,
Like many users on this forum, I updated my brand new S8+ to Pie/OneUI and I hate it.
However, i've been digging on the forum for quite a while and I can't find a clear answer.
Would flashing the official Oreo ROM via ODIN void my warranty?
And where can I find the official ROM for my particular version of the phone?
--EDIT-- I found it on updato, thanks to a thread i missed
Any help would be greatly appreciated

SIHS said:
Hello,
Like many users on this forum, I updated my brand new S8+ to Pie/OneUI and I hate it.
However, i've been digging on the forum for quite a while and I can't find a clear answer.
Would flashing the official Oreo ROM via ODIN void my warranty?
And where can I find the official ROM for my particular version of the phone?
--EDIT-- I found it on updato, thanks to a thread i missed
Any help would be greatly appreciated
Click to expand...
Click to collapse
No it won't void your warranty/Trip Knox.
You can download firmware from either sammobil.com or updato.com these are the two i generally use. ( I see you've found it )
If you do downgrade remember to disable software updates so that you don't go back to pie again.

spawnlives said:
No it won't void your warranty/Trip Knox.
You can download firmware from either sammobil.com or updato.com these are the two i generally use. ( I see you've found it )
If you do downgrade remember to disable software updates so that you don't go back to pie again.
Click to expand...
Click to collapse
I read that there's a way to downgrade like it's an update and keep all data and apps installed (via the HOME file on ODIN), is it real?

SIHS said:
I read that there's a way to downgrade like it's an update and keep all data and apps installed (via the HOME file on ODIN), is it real?
Click to expand...
Click to collapse
Firstly before doing anything I recommend doing a backup first. I don't have a preferred method but you could use cloud based service (Google/Samsung) or something like samsung's smartswitch.
You will need to unzip the firmware that you downloaded. In it will be 5 files which will have to be place in the correct sections of Odin.
There will be 2 CSC files:
CSC - clean install will wipe apps and data ( same as a factory reset )
Home_CSC - dirty install will keep your apps and data.
If downgrading you will need the same or higher bootloader version. The BL number is the 5th number from the right of the firmware name you download.