Guide to unroot GS2? - T-Mobile Samsung Galaxy S II SGH-T989

I've been searching and have yet to find a complete guide or one stop shop for unrooting and putting back to factory. I'm rooted with beastmod, synergy kernel, and cwm recovery. I do not have a stock .tar or nandroid backup. Can anyone help with providing instructions on how to do this? I want to be unrooted, stock rom, and stock recovery. Basically like how it was out of the box.
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If your trying to get your phone back to its stock state try HERE

joemm said:
If your trying to get your phone back to its stock state try HERE
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Very nice, thank you. This gets rid of root correct? Samsung updates will be pushed to the phone everything properly functioning?
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donniestarko said:
Very nice, thank you. This gets rid of root correct? Samsung updates will be pushed to the phone everything properly functioning?
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Yes, back to compete stock.
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Related

Lost my nandroid backup

Hey guys hope someone can help me out here. I have been flashing different roms to try them out and am currently running cm7. I have always kept a nandroid backup of my stock sense rom in case anything went wrong or if I had to take the phone back to sprint. However I have somehow managed to erase my back up and want to know where to go to download a stock evo rom. Apologies if this is a stupid question but I'm still in the process of learning.
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if you mean stock as in right out of the box from sprint then check out this:
https://spreadsheets.google.com/viewform?formkey=dDh6ekc0c2dIbGYyRHFrT09PUWpscnc6MQ
Thx for that, what about a method where I wont loose root access? Is that possible?
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idk. i used that and then rooted again to start over. it says it wipes ur sd card but it doesn't wipe like wallpapers n zips u put on it.
Check out the sprint lovers rom in the dev section. Im mobile so I can't link it.
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{ParanoiA} said:
idk. i used that and then rooted again to start over. it says it wipes ur sd card but it doesn't wipe like wallpapers n zips u put on it.
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Thx this was very helpful
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jayharper08 said:
Check out the sprint lovers rom in the dev section. Im mobile so I can't link it.
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Right on for this hint. Do you know if I will be able to receive ota updates from sprint with this rom, like when gingerbread is updated to evo.
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You will not get OTA updates, but can reasonably expect rooted 2.3 Sense ROMs here on XDA within a couple hours of the official release. If you do get an OTA update notification in Sprint Lovers it will get rid off root if you upgrade. The phone will still be S-off so it should be easy to go back.
This is as close to stock as you can get while maintaining root privileges. This is a rooted stock rom that has NOT been deodexed.
posting & replying via the XDA Premium app.
{ParanoiA} said:
if you mean stock as in right out of the box from sprint then check out this:
https://spreadsheets.google.com/viewform?formkey=dDh6ekc0c2dIbGYyRHFrT09PUWpscnc6MQ
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Click to collapse
Thx, I ended up using this method to start fresh. Any one referencing this thread should know this works like a charm, just follow the steps. Easy.
Sent from my PC36100 using XDA App

Will flashing CWM recovery affect getting an OTA?

My understanding is that recovery stays in a separate partition and whatever you do to it does not affect getting an OTA, is that right?
Also, what if my phone is rooted using the Zerg exploit or whatever method, can I still get an OTA?
So basically I think my questions is, what ultimately decides whether my phone can get an OTA, or not?
if you are on stock ROM, you will get it just fine
but you might loose ROOT after it finish the upgrade
if you are on Custom ROM, you wont get OTA
You can get the ota even on a custom ROM. As long as you have the stock recovery.
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mikeyinid said:
You can get the ota even on a custom ROM. As long as you have the stock recovery.
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How would you have a custom ROM with stock recovery? I've never rooted a Samsung phone since this is my first and I'm waiting to root it, so unless Samsung is different I don't see how.
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You can flash stock recovery using odin
Towle said:
How would you have a custom ROM with stock recovery? I've never rooted a Samsung phone since this is my first and I'm waiting to root it, so unless Samsung is different I don't see how.
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Sent from my SGH-T989 using XDA App
I'm sure within a couple days there will be a custom rom with the new features. that's an assumption but its always been like that on other phones I have had. Hopefully that's the case with this phone also.
I have stock rooted ROM with CWM recovery, is that okay? Or do I have to have a stock recovery?
513263337 said:
I have stock rooted ROM with CWM recovery, is that okay? Or do I have to have a stock recovery?
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you will get the notification for the ota, your phone will download it but when it boots into recovery to flash it and its not the stock recovery, it will just give an error and you will probably have to pull the battery to reboot. i did this on the nexus s. if i remember right i never got the ota notififcation again either after it failed.
I know there are methods out there that can flash the entire phone back to stock (kernel, ROM, recovery) but that involves wiping everything. Is there a way to flash back the stock recovery only since I'm already on stock ROM and kernel?
Big thanks...
I wonder where it puts the update after it downloads it. Would be nice to grab it and maybe install without reverting to stock...
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jasontx said:
I wonder where it puts the update after it downloads it. Would be nice to grab it and maybe install without reverting to stock...
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Click to collapse
It goes to data/cache if I remember right. And there will be rooted roms posted within hours of the ota so its really nothing to even worry about
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513263337 said:
I know there are methods out there that can flash the entire phone back to stock (kernel, ROM, recovery) but that involves wiping everything. Is there a way to flash back the stock recovery only since I'm already on stock ROM and kernel?
Big thanks...
Click to expand...
Click to collapse
There is a stock recovery posted in the dev section you can flash in Odin
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Found that and it works. Thanks!
you can keep your phone more up to date by flashing roms as opposed to waiting for an OTA. galaxy s4g is still stuck on froyo. Epic 4g just got gingerbread.
Has has anyone received the update?
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jasontx said:
Has has anyone received the update?
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Not yet. I went back to stock last night just in case so I hope its today like Tmobile said
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T-Mobile said today now? Where did they say this?
513263337 said:
T-Mobile said today now? Where did they say this?
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They tweeted it a while back. Today our phone and the amaze are suppose to get an update
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Last I heard it was the 13th, oh well who knows lol
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What is the update supposed to do or fix?

Can this mess up my phone?????

What would happen if I select OK?????
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No, it'll just update you to a newer version of Android
ericcarboni said:
No, it'll just update you to a newer version of Android
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But I have a T989 from T-mobile
Running a custom ROM.
I'm running darkside ucle2
Does it matter?
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romny19 said:
But I have a T989 from T-mobile
Running a custom ROM.
I'm running darkside ucle2
Does it matter?
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Click to collapse
Yeah don't take the update. It will cause problems if you're on a custom rom. If you want the OTA update you will have to Odin everything back to stock. Otherwise, if you have titanium then go and freeze device management to prevent that dialogue from coming back up. There's really no reason to take OTA updates because its much easier to just flash a rooted stock rom rather than Odin back to stock.
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yoft1 said:
Yeah don't take the update. It will cause problems if you're on a custom rom. If you want the OTA update you will have to Odin everything back to stock. Otherwise, if you have titanium then go and freeze device management to prevent that dialogue from coming back up. There's really no reason to take OTA updates because its much easier to just flash a rooted stock rom rather than Odin back to stock.
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I think its much better let the devs take our OTA update and prepare it for our phones....
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romny19 said:
I think its much better let the devs take our OTA update and prepare it for our phones....
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Just freeze device management and reboot and you wont get those notifications anymore

back to stock 2.3.5 without nandroid backup?

not that i want to go back, i am loving this ICS leak, but for those that want to go back to stock 2.3.5 can we simply just put in the rom image in odin and flash in download mode?
figured someone was bound to ask so wanted to get it out there.
http://forum.xda-developers.com/showthread.php?t=1762209
Hope this helps
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Crzycoco said:
http://forum.xda-developers.com/showthread.php?t=1762209
Hope this helps
Sent from my SGH-I927 using xda app-developers app
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not really any help there. rooting is not the issue. didnt know if anything was hard coded into the device with the ics update that prevented anyone from being able to just put the phone in download mode and load up the official odin roms to downgrade.
No, you can use the stock ROM at anytime to flash to GB or back to ICS.
Did you not read the second paragraph of the thread?
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GB27 root?? (same as previous leak)

I just updated my phone through Kies. I would like to have root back obviously, but not sure if that has been posted anywhere.
It is the same as the leak. You could have just stayed...
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I was stock rooted ICS before. Didn't see a diff was done.
To get root back can I flash the one from the repository with no data? Or is there a simpler solution
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dbldown768 said:
I was stock rooted ICS before. Didn't see a diff was done.
To get root back can I flash the one from the repository with no data? Or is there a simpler solution
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Ah. I see.
You are correct. That is the simple method.
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You could always flash a recovery then flash superuser and flash back to stock kernel.
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Mattix724 said:
You could always flash a recovery then flash superuser and flash back to stock kernel.
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Doh! Forgot about that.
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I'll just leave this here... *walks away casually* *whistles*
http://forum.xda-developers.com/showthread.php?p=34297546
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(Sorry if I'm asking a repetitive question.)
Does the leak GB27 match the official GB27 that just came out?
I'm on FL24 stock + root. I don't want to use flash an unrooted FL24, download Kies, update to GB27, then root it.
Wondering if I can just use the One-Click method from: http://forum.xda-developers.com/showthread.php?t=2191954
so I can avoid doing all that work and still have the same result.
I'm only asking because I read that GB27 repartitions the storage (or something like that).
I did what you didn't want to do. Some people stated that they are the same but I don't know for sure. I'm having problems accessing the settings and I wanted root back so I just flashed the no data on top of all this. My settings is still messed up and crashes.
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I just updated my phone to latest JB as well, I was previously FL24 ICS Stock Root.
Have you figured out if you can use the same Odin Root?
Trytohaxme said:
I just updated my phone to latest JB as well, I was previously FL24 ICS Stock Root.
Have you figured out if you can use the same Odin Root?
Click to expand...
Click to collapse
There is a root method in the general section.
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I saw this... but not 100% sure what that means
http://forum.xda-developers.com/showpost.php?p=39725957&postcount=22
dbldown768 said:
I just updated my phone through Kies. I would like to have root back obviously, but not sure if that has been posted anywhere.
Click to expand...
Click to collapse
Did you unroot it before updating? Did you just let Kies do it while rooted and had no problems.
graydiggy said:
Ah. I see.
You are correct. That is the simple method.
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Click to collapse
Did you flash with a "no data"? Did it work?
I have flashed it before and it works.
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