Develop Bugs

[Q] How to unroot

I was wondering how to completely go back to stock from ICS, without root of course. Thanks!
Sent from my Galaxy SII T-mobile using xda premium

Scoutamis said:
I was wondering how to completely go back to stock from ICS, without root of course. Thanks!
Sent from my Galaxy SII T-mobile using xda premium
Click to expand...
Click to collapse
well firstly get the tmobile 2.3.6 kernel and flash it ( if you dont and revert to stock you will bootloop) then download the unroot file its in the dev section unzip it then place the tar file on pda and flash but do a factory reset before you flash the process takes about ten minutes.. reboot and well i did another factory reset.. also flash the vl1 radio as well before you flash odin..

mysticfrog said:
well firstly get the tmobile 2.3.6 kernel and flash it ( if you dont and revert to stock you will bootloop) then download the unroot file its in the dev section unzip it then place the tar file on pda and flash but do a factory reset before you flash the process takes about ten minutes.. reboot and well i did another factory reset.. also flash the vl1 radio as well before you flash odin..
Click to expand...
Click to collapse
Or just flash the sammobile tar and get it all done in one shot.
Sent from my SAMSUNG-SGH-I727 using Tapatalk 2

xcrazydx said:
Or just flash the sammobile tar and get it all done in one shot.
Sent from my SAMSUNG-SGH-I727 using Tapatalk 2
Click to expand...
Click to collapse
If I may ask, where do I get the sammobile tar?
Sent from my Galaxy SII T-mobile using xda premium

Scoutamis said:
If I may ask, where do I get the sammobile tar?
Sent from my Galaxy SII T-mobile using xda premium
Click to expand...
Click to collapse
Sammobile.com of course. Lol
Sent from my SAMSUNG-SGH-I727 using Tapatalk 2

Scoutamis said:
I was wondering how to completely go back to stock from ICS, without root of course. Thanks!
Sent from my Galaxy SII T-mobile using xda premium
Click to expand...
Click to collapse
Przekret said:
T989UVLDE:
https://hotfile.com/dl/156479275/2dec738/SGH-T989_TMB_T989UVLDE_T989UVLDE_T989UVLDE.zip.html
Click to expand...
Click to collapse
Download that zip. (this the newest update released yesterday)
And download odin from http://www.mediafire.com/?u868rqz4qn0ta34
Then follows these steps:
1) Power off your phone
2) Plug the USB cable into your computer, without plugging it into your phone.
3) Hold VOL UP + VOL DOWN while plugging in the USB cable to your phone. Stop holding with 'Warning' appears.
4) Press Volume UP and start ODIN (Run as Admin on Vista and 7, just to be safe)
5) Click PDA and locate the MD5 file extracted earlier.
6) Press 'Start' and be patient. It will take a few minutes because it is a large file.
7) You phone will reboot when its finished then you can unplug the usb and reboot your phone once again.
Got odin link and modified the steps from KonstantinKeller restore stock thread..so thanks to him and thanks to przekret for making the flashable zip

xcrazydx said:
Sammobile.com of course. Lol
Sent from my SAMSUNG-SGH-I727 using Tapatalk 2
Click to expand...
Click to collapse
REALLY!! I'll have to check that out.. I haven't heard that one before.. Is there a posting in the Dev section?? i'm planning on rerooting today I just never unrooted my phone before.. Damn so much bloat on this phone now.. Lol
Sent from my SGH-T989 using XDA

mysticfrog said:
REALLY!! I'll have to check that out.. I haven't heard that one before.. Is there a posting in the Dev section?? i'm planning on rerooting today I just never unrooted my phone before.. Damn so much bloat on this phone now.. Lol
Sent from my SGH-T989 using XDA
Click to expand...
Click to collapse
And this does work for the t989 right?
Sent from my SGH-T989 using XDA

mysticfrog said:
REALLY!! I'll have to check that out.. I haven't heard that one before.. Is there a posting in the Dev section?? i'm planning on rerooting today I just never unrooted my phone before.. Damn so much bloat on this phone now.. Lol
Sent from my SGH-T989 using XDA
Click to expand...
Click to collapse
No post in dev section. This is a little jewel I discovered months ago. Far more simple and it's official firmware, with everything included, and won't trip the counter.
Sent from my SAMSUNG-SGH-I727 using Tapatalk 2

xcrazydx said:
No post in dev section. This is a little jewel I discovered months ago. Far more simple and it's official firmware, with everything included, and won't trip the counter.
Sent from my SAMSUNG-SGH-I727 using Tapatalk 2
Click to expand...
Click to collapse
Yeah after I flashed I forgot to flash the counter posted by Mr x ooh well.. I'm Just kinda waiting for the official update.. I love all the roms specially cm9.. My phone I'd some boring shizz now.. Lol
Sent from my SGH-T989 using XDA

mysticfrog said:
Yeah after I flashed I forgot to flash the counter posted by Mr x ooh well.. I'm Just kinda waiting for the official update.. I love all the roms specially cm9.. My phone I'd some boring shizz now.. Lol
Sent from my SGH-T989 using XDA
Click to expand...
Click to collapse
I wouldn't be. Run a custom rom until it's pushed out. No sense in running a crap, bloated up stock rom for the next 2 months or whenever they release it.
Sent from my SAMSUNG-SGH-I727 using Tapatalk 2

I did Odin like three times yesterday.. Cause the damn bootloop.. Thank good there were backups there.. I'm just gonna my phone a break today..
Sent from my SGH-T989 using XDA

Well from what everyone wad saying that update yesterday was a kind of a catalyst for the ics update.. Basically that you needed it
Sent from my SGH-T989 using XDA

mysticfrog said:
Well from what everyone wad saying that update yesterday was a kind of a catalyst for the ics update.. Basically that you needed it
Sent from my SGH-T989 using XDA
Click to expand...
Click to collapse
Why worry about that now? There is no official ics, nor a date in which it will come. When the time comes do what needs done. It takes all of 5 minutes to flash this stuff and prepare
Sent from my SAMSUNG-SGH-I727 using Tapatalk 2

Yeah I know I just have never unrooted my phone so for personal reasons I just wanted to get the feel for it.. I learned a bit yesterday.. Like that crap with the kernel.. Now if I go back to cm9 it does have that ROM specific kernel right? bootloops are so friggin irritating
Sent from my SGH-T989 using XDA

mysticfrog said:
Yeah I know I just have never unrooted my phone so for personal reasons I just wanted to get the feel for it.. I learned a bit yesterday.. Like that crap with the kernel.. Now if I go back to cm9 it does have that ROM specific kernel right? bootloops are so friggin irritating
Sent from my SGH-T989 using XDA
Click to expand...
Click to collapse
The kernel is built in, just follow the directions.
Sent from my SAMSUNG-SGH-I727 using Tapatalk 2

That's cool... Thanks about that easy unroot process ilk check that out later today.. I'm not flash crazy.. all it takes is one bad flash and boom brick.. Sides i've heard of some people frying there sd card.. You just never know..
Sent from my SGH-T989 using XDA

k786 said:
Download that zip. (this the newest update released yesterday)
And download odin from http://www.mediafire.com/?u868rqz4qn0ta34
Then follows these steps:
1) Power off your phone
2) Plug the USB cable into your computer, without plugging it into your phone.
3) Hold VOL UP + VOL DOWN while plugging in the USB cable to your phone. Stop holding with 'Warning' appears.
4) Press Volume UP and start ODIN (Run as Admin on Vista and 7, just to be safe)
5) Click PDA and locate the MD5 file extracted earlier.
6) Press 'Start' and be patient. It will take a few minutes because it is a large file.
7) You phone will reboot when its finished then you can unplug the usb and reboot your phone once again.
Got odin link and modified the steps from KonstantinKeller restore stock thread..so thanks to him and thanks to przekret for making the flashable zip
Click to expand...
Click to collapse
Will this set my phone back to 1gb instead of 768mb?

idb117 said:
Will this set my phone back to 1gb instead of 768mb?
Click to expand...
Click to collapse
Your phone will never read "1GB". Due to how android handles memory, some will be reserved for it and not be visible to you. Kinda like what Windows does to your hard drive.

Thnx.. Well back 2 rooting & JB'in lol
Sent from my SGH-T989 using xda app-developers app

Kernal Flash help!

I'm so sorry to bother you and thank you in advance for your taking the time to read this. I flashed the EL29 kernel for my epic 4g touch through ODIN. After it exited download mode, the splash screen now says that samsung gt-19100 with a yellow triangle. Is there a fix for that?

You can get rid of the triangle with the triangle away app from the app store, or by getting a usb jig. Rwilco's awesome website gives the step by step process.
http://kernelrepo.chris41g.org/howtoyellowtriangle.asp

Pyrotoast said:
You can get rid of the triangle with the triangle away app from the app store, or by getting a usb jig. Rwilco's awesome website gives the step by step process.
Click to expand...
Click to collapse
I can't even get boot. I just now got into recovery. It installed Rogue ET recovery, so I'm gonna see if backing up my rom will work. Thanks!

Update
Was able to get back into the phone after flashing in a rom, but splash screen still says gt-19100.

You'll have to buy a USB jig or update to ICS and just use triangle away.
Sent from my SPH-D710 using Tapatalk

slick_rick said:
You'll have to buy a USB jig or update to ICS and just use triangle away.
Sent from my SPH-D710 using Tapatalk
Click to expand...
Click to collapse
Yep, triangle away only works if you on ICS. The triangle is samsung's way to show an unofficial kernel was flashed to the phone.
Sent from my SPH-D710 using xda app-developers app

g_ding84 said:
Yep, triangle away only works if you on ICS. The triangle is samsung's way to show an unofficial kernel was flashed to the phone.
Sent from my SPH-D710 using xda app-developers app
Click to expand...
Click to collapse
Thanks! I was able to get it back to stock EL29 and get rid of the triangle once the kernel was reset.

Glad it worked for you.
Sent from my SPH-D710 using xda app-developers app

I used the USB jig method.
http://www.youtube.com/watch?v=XbZMMj1maUY

Just in case
This is why I always keep a stock GB (or ICS now I guess) ODIN image, nothing like good old stock to keep the soft bricks to a minimum

rovar said:
This is why I always keep a stock GB (or ICS now I guess) ODIN image, nothing like good old stock to keep the soft bricks to a minimum
Click to expand...
Click to collapse
No kidding.

Restoring back to nandroid.

I'm on cyanogenmod 10 beta 3 and wanted to go back to AOKP Milestone 6 but I'm having problems with superuser (and therefore cant use mobile odin) so I was wondering if I could just restore my nandroid back to EL26 via the JB recovery mode and then flash the aokp ROM through that recovery like normal? Or would that not work/brick my phone?
Sent from my SPH-D710 using xda app-developers app

Bump, really need some input on this. Any help is appreciated. thanks.
Sent from my SPH-D710 using xda app-developers app

Safe bet as I had the same issue: use sfhub one click to go back to el29 w root, then one click root to el26 cwm access and then you're good to go. Just make sure whatever road u take it leads you to el26 cwm by chris41g.
Sent from my SPH-D710 using xda app-developers app

dante32278 said:
Safe bet as I had the same issue: use sfhub one click to go back to el29 w root, then one click root to el26 cwm access and then you're good to go. Just make sure whatever road u take it leads you to el26 cwm by chris41g.
Sent from my SPH-D710 using xda app-developers app
Click to expand...
Click to collapse
I don't really have a PC at my disposal at the moment though is my biggest problem :/ which is why I was asking if restoring back to my nandroid back up via JB recovery would be safe?
Sent from my SPH-D710 using xda app-developers app

dante32278 said:
Safe bet as I had the same issue: use sfhub one click to go back to el29 w root, then one click root to el26 cwm access and then you're good to go. Just make sure whatever road u take it leads you to el26 cwm by chris41g.
Sent from my SPH-D710 using xda app-developers app
Click to expand...
Click to collapse
Hey, quick question.I'm just trying to do some reading about safety and such, and came across your post. Wouldn't it be safe to JUST Odin EL26 CWM alone? Without going back to EL29 first? Is that necessary? Again, not being a smartass and trying to call you out, I'm just really trying to get a hold on what is safe, or not, and procedures.

vinscuzzy said:
Hey, quick question.I'm just trying to do some reading about safety and such, and came across your post. Wouldn't it be safe to JUST Odin EL26 CWM alone? Without going back to EL29 first? Is that necessary? Again, not being a smartass and trying to call you out, I'm just really trying to get a hold on what is safe, or not, and procedures.
Click to expand...
Click to collapse
That's exactly what you should do.
Sent from my SPH-D710 using Tapatalk 2

Well the main issue is it seems he lost root access....just saying its safest to start fresh. Only takes 10 extra minutes. If he had root he would've been able to just mobile Odin el26 like he stated, but its not an option.
Sent from my SPH-D710 using xda app-developers app

dante32278 said:
Well the main issue is it seems he lost root access....just saying its safest to start fresh. Only takes 10 extra minutes. If he had root he would've been able to just mobile Odin el26 like he stated, but its not an option.
Sent from my SPH-D710 using xda app-developers app
Click to expand...
Click to collapse
Exactly. That's the problem I'm having, which is why I'm asking if (since i dont have a pc to use) It would be smart and safe to just restore my nandroid (which is el26 with root and cwm) from the JB recovery (cwm6) and then just flash my original ROM through el26 cwm.
Anyone think this is safe?
Sent from my SPH-D710 using xda app-developers app

organizedConfoosion said:
Exactly. That's the problem I'm having, which is why I'm asking if (since i dont have a pc to use) It would be smart and safe to just restore my nandroid (which is el26 with root and cwm) from the JB recovery (cwm6) and then just flash my original ROM through el26 cwm.
Anyone think this is safe?
Sent from my SPH-D710 using xda app-developers app
Click to expand...
Click to collapse
It sounds safe, both are quoted as being safe recoveries. I even restored a nand from a broken phone onto my replacement one yesterday so I'm sure what you're doing is far less risky. Its the wiping in non-safe recoveries that caused bricks, you should be OK as long as you don't do something stupid like pull the battery during the restore.
Sent from my SPH-D710 using xda app-developers app

dante32278 said:
It sounds safe, both are quoted as being safe recoveries. I even restored a nand from a broken phone onto my replacement one yesterday so I'm sure what you're doing is far less risky. Its the wiping in non-safe recoveries that caused bricks, you should be OK as long as you don't do something stupid like pull the battery during the restore.
Sent from my SPH-D710 using xda app-developers app
Click to expand...
Click to collapse
Someone else told me that even while restoring a nandroid backup, it still wipes data, so if you're on an unsafe kernel, it still can brick. Just so everyone knows, I was on a safe kernel when I bricked mine. Apparently there was a mis-merge that happened that caused the safe kernel to be unsafe for a few days. I was very unlucky, but its one of the risks we all take when doing this. I'm planning on odin-ing el26 kernel whenever I need recovery from here on out!

dante32278 said:
It sounds safe, both are quoted as being safe recoveries. I even restored a nand from a broken phone onto my replacement one yesterday so I'm sure what you're doing is far less risky. Its the wiping in non-safe recoveries that caused bricks, you should be OK as long as you don't do something stupid like pull the battery during the restore.
Sent from my SPH-D710 using xda app-developers app
Click to expand...
Click to collapse
vinscuzzy said:
Someone else told me that even while restoring a nandroid backup, it still wipes data, so if you're on an unsafe kernel, it still can brick. Just so everyone knows, I was on a safe kernel when I bricked mine. Apparently there was a mis-merge that happened that caused the safe kernel to be unsafe for a few days. I was very unlucky, but its one of the risks we all take when doing this. I'm planning on odin-ing el26 kernel whenever I need recovery from here on out!
Click to expand...
Click to collapse
Thank you both for the replies. I guess I'll go ahead and try the nandroid restore.
Wish me luck haha. Hopefully this recovery is as stable as people have been saying lately.
Sent from my SPH-D710 using xda app-developers app

organizedConfoosion said:
Thank you both for the replies. I guess I'll go ahead and try the nandroid restore.
Wish me luck haha. Hopefully this recovery is as stable as people have been saying lately.
Sent from my SPH-D710 using xda app-developers app
Click to expand...
Click to collapse
Just thought of something: if you lost root, how do you still have a custom recovery? You may want to wait til ur near a PC to do el26 flash!
Sent from my SPH-D710 using xda app-developers app

No idea but I can boot into CWM just fine, its just superuser won't give me root access. I even tried to do the su binary update and nothing.
I'm not flashing El26, I'm just restoring to my nandroid backup which is el26.
Sent from my SPH-D710 using xda app-developers app

organizedConfoosion said:
No idea but I can boot into CWM just fine, its just superuser won't give me root access. I even tried to do the su binary update and nothing.
I'm not flashing El26, I'm just restoring to my nandroid backup which is el26.
Sent from my SPH-D710 using xda app-developers app
Click to expand...
Click to collapse
OK well good luck and let us know how it goes! Fingers crossed....
Sent from my SPH-D710 using xda app-developers app

I ended up not restoring, and found a way to fix my root access. Thanks all for the input though everyone!
Sent from my SPH-D710 using Tapatalk 2

Bricked? Think I flashed the wrong boot image

I believe I flashed the wrong boot image in odin. my sprint epic4g touch is now giving me a yellow triangle with gt-9i100 model number displaying. i have tried all the triangle removal threads but nothing helps. I think I need to send it off to the JIG folks who do the $50 repair. Thoughts?

Does it boot? If it does... Use this http://forum.xda-developers.com/showthread.php?t=1865102
Sent from my SPH-D710 using xda app-developers app

BluesRulez said:
Does it boot?
Sent from my SPH-D710 using xda app-developers app
Click to expand...
Click to collapse
yes, it boots to the yellow triangle screen only. no further. Problem is it is recognized in odin at that screen, and not in the typical odin download mode screen.

l2yangop said:
yes, it boots to the yellow triangle screen only. no further. Problem is it is recognized in odin at that screen, and not in the typical odin download mode screen.
Click to expand...
Click to collapse
and i cant do step 4. boot into cwm

l2yangop said:
yes, it boots to the yellow triangle screen only. no further. Problem is it is recognized in odin at that screen, and not in the typical odin download mode screen.
Click to expand...
Click to collapse
l2yangop said:
and i cant do step 4. boot into cwm
Click to expand...
Click to collapse
So you can go into odin mode and pc odin recognizes it?

BluesRulez said:
So you can go into odin mode and pc odin recognizes it?
Click to expand...
Click to collapse
well its strange...odin recognizes it at the triangle screen but not at the download screen (power + down, then up to confirm screen)

l2yangop said:
well its strange...odin recognizes it at the triangle screen but not at the download screen (power + down, then up to confirm screen)
Click to expand...
Click to collapse
Wait for someone else to see this thread. I don't want to ask you to do something that might damage the device more.
But it is strange. I am really curious to see what would happen if odin restore is started when phone is recognized at that triangle screen.

Did the boot.img have a custom recovery? Also what boot.img was it?
sent from my BAD A$$ Epic touch

patrao_n said:
Did the boot.img have a custom recovery? Also what boot.img was it?
sent from my BAD A$$ Epic touch
Click to expand...
Click to collapse
it was this one
http://depositfiles.com/files/e7i721rui
the actual file name is "GT-I9100_OLD_BOOTLOADER.tar" from the self extractor
i found it from an ebay jig auction (clearly the wrong one):
http://www.ebay.com/itm/UNBrick-Sam...686806?pt=PDA_Accessories&hash=item3f0d46da16

This screenshot show where odin just stalls out every time. its stuck on "setupconnection"

l2yangop said:
it was this one
the actual file name is "GT-I9100_OLD_BOOTLOADER.tar" from the self extractor[/url]
Click to expand...
Click to collapse
You flashed the wrong boot loader, you need to have it JTAG'd.
Sent from my SPH-D710 using xda premium

Mattix724 said:
You flashed the wrong boot loader, you need to have it JTAG'd.
Sent from my SPH-D710 using xda premium
Click to expand...
Click to collapse
ok, so i have to send it to these guys?
http://mobiletechvideos.mybigcommerce.com/samsung-epic-4g-touch-jtag-brick-repair/
nothing i can do myself?

Pretty sure. Unless anyone else here can tell you how to fix it.
Sent from my SPH-D710 using xda premium

If the phone won't go passed the gs2 screen and you cant get into cwm, you're pretty much boned.
Sent from my Galaxy Nexus using xda app-developers app

Yeah flashing the wrong bootloader is the one surefire way to brick this phone, not counting the emmc brick. You're gonna need JTAG and yeah mobiletechvideos is the way to go. They should get you back up and running for 50 bucks.
Sent from my SPH-D710 using Tapatalk 2

$50 and a week from now they'll have you up and running again.
Sent from my SPH-D710 using xda premium

Since Odin picks up the phone see if adb will recognize the phone.
Also try kies. The emergency recovery or firmware update thing. Can't remember exactly what it is called.
Sent from my SPH-D710 using xda premium

If it's the wrong bootloader I think Kies will recognize it as the international version. Emergency recovery wouldn't work.
Sent from my SPH-D710 using xda premium

[Q] Possible Brick: Is a jig my only hope?

I did a duma$$ move. I flashed a rom on top of a different rom without wiping.
- Phone boots up
- Boot animation displays
- Freezes on 'Android' Screen
- Does not go into Recovery
- Does not go into Download mode
- PC doesn't see it, but pc makes a sound when I plug it in, and drivers attempt to install when I plug in to pc (fail)
- Kies takes a while but I got "This device is not supported by Kies 2.0. Please try again'
Any and all help is appreciated.

Duma!!!!!! You vietnameeeee?!
Sent from my SGH-T889 using xda premium

dannydv said:
Duma!!!!!! You vietnameeeee?!
Sent from my SGH-T889 using xda premium
Click to expand...
Click to collapse
Nope. Americano

vazquezcmp said:
Nope. Americano
Click to expand...
Click to collapse
Dumaa even worse!!! Lol!!
Sent from my SGH-T889 using xda premium

Flash factory image. Its not bricked
Sent from my GT-N7105 using Tapatalk 2

ssCISengineer said:
Flash factory image. Its not bricked
Sent from my GT-N7105 using Tapatalk 2
Click to expand...
Click to collapse
Yep! Or odin back to stock!
Sent from my SGH-T889 using xda premium

dannydv said:
Yep! Or odin back to stock!
Sent from my SGH-T889 using xda premium
Click to expand...
Click to collapse
I can't get into 'download mode'. Is there another way?

vazquezcmp said:
I can't get into 'download mode'. Is there another way?
Click to expand...
Click to collapse
Try using ROM toolbox to get into download mode worked for me once when I couldn't get in...
Sent from my SGH-T889 using xda premium

Bro just use odin and flash the original t889 stock rom in odin.
Sent from my SGH-T889 using xda premium

deeznutz1977 said:
Try using ROM toolbox to get into download mode worked for me once when I couldn't get in...
Sent from my SGH-T889 using xda premium
Click to expand...
Click to collapse
Doing it as we speak. Thanks Man.

vazquezcmp said:
Doing it as we speak. Thanks Man.
Click to expand...
Click to collapse
Actually what I have is the GN2 Toolkit. Is it the same thing? If not where can I find?

dannydv said:
Bro just use odin and flash the original t889 stock rom in odin.
Sent from my SGH-T889 using xda premium
Click to expand...
Click to collapse
I thought you need to be able to get into 'download mode' for Odin to see your device?

vazquezcmp said:
Actually what I have is the GN2 Toolkit. Is it the same thing? If not where can I find?
Click to expand...
Click to collapse
That's what I meant lol sorry about that... At least you knew what I was talking about. The tool kit got my phone into download when nothing else would. It worked even when adb wouldn't Thankfully I only has that problem one time
Sent from my SGH-T889 using xda premium

if you got into download mode and odin'ed back to stock and it gets stuck on the "samsung with the blue logo behind it" boot screen than you have to go to stock recovery and wipe data and cache there and reboot, i had the same problem earlier but mine could get into recovery and download mode but it wouldnt wipe the data it would just turn off whenever i tried to

deeznutz1977 said:
That's what I meant lol sorry about that... At least you knew what I was talking about. The tool kit got my phone into download when nothing else would. It worked even when adb wouldn't Thankfully I only has that problem one time
Sent from my SGH-T889 using xda premium
Click to expand...
Click to collapse
HOLY S-H-I-T SNACKS! I got into download mode. Rather then pressing Volume UP + Home + Power, I did same but Volume Down, and I'm Golden.
Thanks for all the help and Replys. Love this community. I root because this is what we do. I stand behind those that say Samsungs are damn near impossible to brick.
:good::good::good:

haldi15 said:
if you got into download mode and odin'ed back to stock and it gets stuck on the "samsung with the blue logo behind it" boot screen than you have to go to stock recovery and wipe data and cache there and reboot, i had the same problem earlier but mine could get into recovery and download mode but it wouldnt wipe the data it would just turn off whenever i tried to
Click to expand...
Click to collapse
How'd you do that? I might have the same situation.

to get into the stock recovery you hold volume up and home and the power button at the same time, use the volume keys to move up and down and power button to select than wipe data and cache and reboot