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[Q] Nexus S 4G won't boot past Google Screen!!

I tried rooting my phone, but when I flashed CWM my Nexus S stopped booting... it freezes on the Google screen in the intro. I can boot into Fastboot, and cwm, but I cant connect the Internal memory to the computer without it booting like it is supposed to. Does anybody know of anything I can do to fix my phone and bring it back to stock??

There are guides for returning to stock stickied in the Nexus S 4G Android Development forum.
Before you do that though, try flashing a different recovery, like the one linked to here or here.
Btw, which guide did you use? You're not the first person to have this problem, and it's really bugging me (though probably not as much as it's bugging you :-o).

Maximilian Mary: I tried to post the link, but since I'm a new member I have to wait 8 posts before I can post a URL.... :/
I will try a different recovery, but how would I flash a rom if I can connect my phone via usb mount?

deadzunehd said:
Maximilian Mary: I tried to post the link, but since I'm a new member I have to wait 8 posts before I can post a URL.... :/
Click to expand...
Click to collapse
What's the title of the thread?
.
I will try a different recovery, but how would I flash a rom if I can connect my phone via usb mount?
Click to expand...
Click to collapse
I'm a little out of my depth here, but I think it's
fastboot flash system system.img.
You don't need to put the rom image on the sdcard. Just put it in the same folder as fastboot.

It was titled "How to Root Nexus S!"
And I will try to flash recovery and try that rom command, thank you )

deadzunehd said:
It was titled "How to Root Nexus S!"
And I will try to flash recovery and try that rom command, thank you )
Click to expand...
Click to collapse
Hmmm. I can't find that exact title. Could you pm me the link?

deadzunehd said:
thank you )
Click to expand...
Click to collapse
There's a button for that.

I got the link. Thanks. I looks like you flashed a boot image that is incompatible with your phone. That guide was for the T-Mobile Nexus S. (Why they're screwing with the boot.img to begin with, I really don't understand.)
Download the attached file, and unzip it to the same folder as fastboot. The md5 sum is d4a9508f9321eb25df3383f00f571e8b. Then
Code:
fastboot flash boot boot.img
You'll probably also want to use one of the recoveries listed above to
Code:
fastboot flash recovery recovery.img
, but leave system alone for now. Flash that only as a last resort.

deadzunehd said:
I tried rooting my phone, but when I flashed CWM my Nexus S stopped booting... it freezes on the Google screen in the intro. I can boot into Fastboot, and cwm, but I cant connect the Internal memory to the computer without it booting like it is supposed to. Does anybody know of anything I can do to fix my phone and bring it back to stock??
Click to expand...
Click to collapse
I had this problem after flashing the wrong ROM onto my phone. I got the phone back to stock using ODIN.
My thread can be found here
http://forum.xda-developers.com/showthread.php?p=14172335#post14172335
hope it helps

Acnescar said:
I had this problem after flashing the wrong ROM onto my phone. I got the phone back to stock using ODIN.
My thread can be found here
http://forum.xda-developers.com/showthread.php?p=14172335#post14172335
hope it helps
Click to expand...
Click to collapse
OMG!! im having the same issue. could you please post the link for ODIN so i can return to stock and take it from there please? I rely on my phone so much and i need it asap thank you.

same problem with me.
but in my case, the phone not only freeze after the google logo before boot. I tried several times to pull the battery and start the phone again, it took several times until the phone can boot normally again.
After that, my nexus s can work as usual. but it only takes 3-4 hour until it freeze/hangs or reboot automatically and show image of green robot lay down with red alert triangle...
sometimes I noticed all application force closed like gmail, gtalk, etc. (its a basic apps instead of 3rd party app)
History :
- root GB 2.37 using superoneclick
- upgrade OTA to ICS 4.04
- problem happens
- root using guide : nexusshacks.com
- unroot using guide : nexusshacks.com
- back to factory setting on GB 2.34
- upgrade OTA to ICS 4.04
- Still got that problem.....
I'm using Nexus S 4G Sprint, pls help me guys...

nexus s won't boot
I had the same problem and read elsewhere that heating the phone with a hairdryer solves the problem.
I must say, indeed it did.
I removed the battery and the SIM card, then heated up the phone (so it really feels warm) put back the battery and sim and simsalebim the phone started again. and is still working since (now already a few day's)
It seems that a component in the phone is heat sensitive, the question in my mind is when will this show again and do I need to consider buying a new phone.
But sofar it works
PS I also tried hard reset factory reset the lot, but in the end only heating up helped.
Good luck, David

I fixed this problem! but I had to wipe all user data by rooting it using nexusrootICS. It finally boots up and the phone works now... that's all I need.

CWM only option is optimus 2x

Hey guys, when i try to install recovery the only device option that comes out is 'optimus 2x'. Whenever I try install this it bricks my phone and I have to reflash the kdz file. In the beginning before i flashed gingerbread, the 'optimus 3d' option was available, but now only the 2x is offered. Anyone have experience/solutions to this? Really want to flash thiazrom

It's a bug in the ROM Manager. Use 4.8.0.7 or the newest 5.0.0.6 that should work too (at least it did for me)

Use old version of Rom Manager
Enviado desde LG Optimus 3D

i bricked it too but i cant unbrick it now ^^
Tommorow Ill send it to lg if i wont make it. What method did you use to unbrick?

orlox said:
i bricked it too but i cant unbrick it now ^^
Tommorow Ill send it to lg if i wont make it. What method did you use to unbrick?
Click to expand...
Click to collapse
Go into download mode by holding Vol+ Button and connecting to the PC. When you have sound on you should hear that windows sound when plugging in a new device. Then release the button, the screen of the phone will stay black. Windows should discover a new device and install drivers (needs the LG Drivers)
Then you can use the emergency mode from the LG Mobile Support Tool to reflash with official Firmware.
That's what I did. The LG Tool installed V21A (because I have a european device), so I was able to root again.
I don't know what kind of device you have, but before flashing the official Firmware you should know what the latest version would be or you could lose the ability to root.

Thanks, on older version of cwm work flawlessly
And I can assure you Orlox, that the Zwoggel's method works, becouse i had the same situation. Thanks guys

orlox said:
i bricked it too but i cant unbrick it now ^^
Tommorow Ill send it to lg if i wont make it. What method did you use to unbrick?
Click to expand...
Click to collapse
hey man this is what i did to unrbick it:
http://forum.xda-developers.com/showthread.php?t=1287236
pretty much flash a new kdz file and it should be unbricked.
I ended up flashing an older version of cwm, 5.x.x or something, u can find this option at the bottom of the cwm menu

luke187 said:
hey man this is what i did to unrbick it:
http://forum.xda-developers.com/showthread.php?t=1287236
pretty much flash a new kdz file and it should be unbricked.
I ended up flashing an older version of cwm, 5.x.x or something, u can find this option at the bottom of the cwm menu
Click to expand...
Click to collapse
And if you get so unlucky that you can't do that, you'll have to hunt down a Win XP machine and do this http://forum.xda-developers.com/showthread.php?t=1244490 (Like I did about half a week ago).

Trying to unroot a Galaxy S6...losing the will to live :(

Can anyone help? I spent a big chunk of my hard earned money on a refurbed S6 for my daughter, she's had it about a week (she's Pokemon mad btw). The latest update for Pokemon Go came out and now she's blocked from the game as it appears the phone has been rooted. If I'd known, I wouldn't have bought it. Anyway, for the last 2 days my partner and I have been trying to unroot it. We've used various versions of Odin to no avail. I had a lot of trouble finding the right firmware because it looks like the phone was Polish according to the version and CSC numbers, and tbh I'm still not sure if we're trying the right one. Software is 5.1.1. right now. I've tried installing SuperSU but it won't run, it just crashes the phone and forces a reboot. We've tried manually unrooting with a file manager but the su files we need to delete reappear seconds after they're deleted. I'm at the end of my tether, does anyone have any ideas?

You won't be able to unroot it until you flash stock firmware. I don't know if the game checks the knox status.
Give this a go
http://www.androidpolice.com/2016/09/11/guide-play-pokemon-go-0-37-rooted-android-magisk/
Enjoy

Unforunately my partner spent almost all night trying to flash the firmware. According to him it 'nearly' worked, however, I now have a phone stuck in a boot loop. :crying:

Run emergency recovery on Smart switch

ccalixtro said:
Run emergency recovery on Smart switch
Click to expand...
Click to collapse
Do I need to have smart switch installed on the phone for this to work?

amber_1978 said:
Do I need to have smart switch installed on the phone for this to work?
Click to expand...
Click to collapse
No, run it on your pc.

Thanks, I'll give it a go after work.

ccalixtro said:
No, run it on your pc.
Click to expand...
Click to collapse
Smart switch won't work, says it doesn't recognise the device

I think I would give original firmware of your country and odin a try. One of possible ways is to download all needed files from the site of sammobile.
For me this way works every time when I stuck in boot loop. Odin functionates when you are in download mode. Switch off your s6, then start by pressing home-, powerbutton and Volume down at the same time.
Then start Odin on PC, then connect USB and so on.
Greetz JG

amber_1978 said:
Smart switch won't work, says it doesn't recognise the device
Click to expand...
Click to collapse
When you select emergency recovery theres an option where you have to write the device model and the serial number

Use kies 3 on your computer. When you get it do a "firmware upgrade and installation" it will ask for your serial number which you can get from download mode when pressing the home key. After that kies 3 will ask to boot your phone to recovery but instead boot to download and bow your phone will flash to stock. This method always work!!

fahad999 said:
Use kies 3 on your computer. When you get it do a "firmware upgrade and installation" it will ask for your serial number which you can get from download mode when pressing the home key. After that kies 3 will ask to boot your phone to recovery but instead boot to download and bow your phone will flash to stock. This method always work!!
Click to expand...
Click to collapse
Thanks for the reply. Unfortunately I've tried Kies already and I can't get it to work at all. I get a message telling me my device is not compatible and the whole thing just stops. I'll give it another go though, no harm in trying. Thanks

@amber_1978, Pokemon Go does not check for root. The only thing it does seem to check for is location spoofing via another app. I'm using it on a rooted, Knox tripped, Xposed installed phone with no issues.
If you want to return the phone back to stock, the best way IMO would be to use Odin to flash a stock image, such as the EPD1 firmware.

socal87 said:
@amber_1978, Pokemon Go does not check for root. The only thing it does seem to check for is location spoofing via another app. I'm using it on a rooted, Knox tripped, Xposed installed phone with no issues.
If you want to return the phone back to stock, the best way IMO would be to use Odin to flash a stock image, such as the EPD1 firmware.
Click to expand...
Click to collapse
Really? Did you do the latest update in the game and it still worked ok? This phone has definitley not been used for location spoofing by us and I'm pretty sure there were no apps of that nature on the phone. I downloaded a root checker when everything went wrong the other day, it said the phone was rooted. I'm totally at a loss tbh. Right now it's still in a boot loop. Trying to flash it with Odin as we speak.

Just an update. Tried Smart Switch. Tried the model and serial numbers on the back of the phone case, these weren't recognised so I went to the recovery screen and hit the home button and got a completely different set of numbers. Different IMEI, model number, you name it. I'm assuming this is why Odin won't work, I'm looking for the wrong firmware? I obviously have Frankenstein's phone. No idea what to do now.

Best thing to do is to flash TWRPP and try to flash a custom stock rom through the TWRP recovery which does not have root installed..... If that doesn't work try to find a generic stock firmware for Odin, meaning a firmware that can run in any country..... If all else fails update it to 6.0.1 stock firmware. Try the closest firmwares to your location.
And if you do manage to get to the Samsung logo let the phone sit there for a good 10 minutes even if it reboots....
When I bricked my Samsung I used masiks custom 6.0.1 rom based on stock, but had all the links to bootloaders cscs radios and what not so giv that a shot if you can find it.
---------- Post added at 12:08 AM ---------- Previous post was at 12:05 AM ----------
Link to rom that helped me http://forum.xda-developers.com/galaxy-s6/development/masik-marshmallow-1-0-jan-20-2016-t3297961

do you have lucky patcher playstore installed ?

ODIN Fails Every Time

Hi,
So I was trying to root my phone and it all went wrong. I have rooted tons of phones before, but never a Samsung (never again).
The phone will show the Samsung Boot screen, but then it either goes black, with a flashing blue LED, or it boots itself into recovery.
When I use ODIN, the flash fails at "system.img.ext4" whenever I use just the AP field. If I load all the fields in, it fails at "xbl.elf"
I got the firmware file from SamMobile, so I don't think that is the issue, but who knows. It's as if the phone no longer has an OS on it. I also tried using SmartSwitch as well, but I have no idea what the S/N on this phone is. It was originally a Sprint phone and was working fine, but I could never find the S/N. It is nowhere on the phone itself, and was not listed when I typed #*06#. All I have is the IMEI.
Finally, when it is in recovery, there is a message at the bottom that reads, "dm-verity verification failed".
Sorry for the bullet point style here, I am on mobile. If anyone can assist, I would be very grateful!

ebercon said:
Hi,
So I was trying to root my phone and it all went wrong. I have rooted tons of phones before, but never a Samsung (never again).
The phone will show the Samsung Boot screen, but then it either goes black, with a flashing blue LED, or it boots itself into recovery.
When I use ODIN, the flash fails at "system.img.ext4" whenever I use just the AP field. If I load all the fields in, it fails at "xbl.elf"
I got the firmware file from SamMobile, so I don't think that is the issue, but who knows. It's as if the phone no longer has an OS on it. I also tried using SmartSwitch as well, but I have no idea what the S/N on this phone is. It was originally a Sprint phone and was working fine, but I could never find the S/N. It is nowhere on the phone itself, and was not listed when I typed #*06#. All I have is the IMEI.
Finally, when it is in recovery, there is a message at the bottom that reads, "dm-verity verification failed".
Sorry for the bullet point style here, I am on mobile. If anyone can assist, I would be very grateful!
Click to expand...
Click to collapse
I'm new to the s7. long time lg man
on lg ussally means either ure trying to flash a non signed image or downgrade a qfused bootloader anti rollback which sprint is good for.
in dl mode after fail its not showing anything about binary and stuff in red is it

TheMadScientist420 said:
I'm new to the s7. long time lg man
on lg ussally means either ure trying to flash a non signed image or downgrade a qfused bootloader anti rollback which sprint is good for.
in dl mode after fail its not showing anything about binary and stuff in red is it
Click to expand...
Click to collapse
It does say something about binary in there. Binary 3 I believe. I'll have to try again to get the error.

ebercon said:
It does say something about binary in there. Binary 3 I believe. I'll have to try again to get the error.
Click to expand...
Click to collapse
sounds the firmware u are flashing is older than what you have on the device hence the fail
try to find newer firmware and try flashing it

download
Download official nougat from sam mobile then flash with Odin. It will definitely solve your problem

amol6630 said:
Download official nougat from sam mobile then flash with Odin. It will definitely solve your problem
Click to expand...
Click to collapse
I may try this as well. I flashed the newest firmware I could find other than Nougat and I now have it booting all the way up and then after about a minute, it loops again. It is at least further along than before.
I just remembered one detail: The original issue began when I flashed a modified boot.img to the phone during a rooting attempt. Could this be what is still causing the issue and preventing a reformatting of the phone from solving the issue? So lost with this thing...

Try with latest firmware + pit file + tick re-partition

ebercon said:
I may try this as well. I flashed the newest firmware I could find other than Nougat and I now have it booting all the way up and then after about a minute, it loops again. It is at least further along than before.
I just remembered one detail: The original issue began when I flashed a modified boot.img to the phone during a rooting attempt. Could this be what is still causing the issue and preventing a reformatting of the phone from solving the issue? So lost with this thing...
Click to expand...
Click to collapse
Sorry to revive this thread but did this work cause its currently happening to me

If your phone is an original, S/N may be engraved in the back... it's a little bit hard to note but put a spotlight near it so that you can identify it better.
hhh ^^

I bricked my S7... can it be fixed?

So I modded the hell out of my stock rom and eventually broke it. After failing to flash the stock firmware about 50 times I gave up and put Lineage OS on my phone. Eventually I decided I wanted to try putting the stock back on and somehow screwed up my IMEI crap and don't have a backup. Basically all my phone can do is run stock rom but without any mobile network support or the same thing with Lineage OS. I've spent hours trying to fix it but nothing's worked. I checked just about every guide I've been able to find and none of them work. the issue is either not fixed or there's some kind of an error/change during the process that makes it so I can't continue. I downloaded some combination file that is supposed to help fix the issue but it won't flash via ODIN like the guide says so i can't do that.
I really need this phone up and working again. Anyone got any ideas? As of right now I have a paper weight that I can browse the internet on.
Update: I fixed it by flashing Android 8.0.0 firmware onto my phone instead of 7.0.0. I'm not sure why that fixed it because even lineage OS couldn't get my IMEI number but it's working now.

PimpWithALimp95 said:
So I modded the hell out of my stock rom and eventually broke it. After failing to flash the stock firmware about 50 times I gave up and put Lineage OS on my phone. Eventually I decided I wanted to try putting the stock back on and somehow screwed up my IMEI crap and don't have a backup. Basically all my phone can do is run stock rom but without any mobile network support or the same thing with Lineage OS. I've spent hours trying to fix it but nothing's worked. I checked just about every guide I've been able to find and none of them work. the issue is either not fixed or there's some kind of an error/change during the process that makes it so I can't continue. I downloaded some combination file that is supposed to help fix the issue but it won't flash via ODIN like the guide says so i can't do that.
I really need this phone up and working again. Anyone got any ideas? As of right now I have a paper weight that I can browse the internet on.
Update: I fixed it by flashing Android 8.0.0 firmware onto my phone instead of 7.0.0. I'm not sure why that fixed it because even lineage OS couldn't get my IMEI number but it's working now.
Click to expand...
Click to collapse
Quickest way to solve the issue as you've found out is to flash latest stock for device. Bootloader was the source of your problems, once upgraded it cannot be downgraded no matter what. All these bull sh1t guides saying you can just end up with a bricked phone.
Now BACK UP your EFS partition so this doesn't happen again.

cooltt said:
Quickest way to solve the issue as you've found out is to flash latest stock for device. Bootloader was the source of your problems, once upgraded it cannot be downgraded no matter what. All these bull sh1t guides saying you can just end up with a bricked phone.
Now BACK UP your EFS partition so this doesn't happen again.
Click to expand...
Click to collapse
I am planning on install a One UI Based rom on my S7, my phone is running stock without any rood or something like this.
How to flash the Rom without making a stupid thing that will brick my phone? i mean how to start all the process from zero?
And another thing i wonder about, what is the IMEI thing that you guys talked about?

rheh104 said:
I am planning on install a One UI Based rom on my S7, my phone is running stock without any rood or something like this.
How to flash the Rom without making a stupid thing that will brick my phone? i mean how to start all the process from zero?
And another thing i wonder about, what is the IMEI thing that you guys talked about?
Click to expand...
Click to collapse
1. Go here to download TWRP an install it via ODIN,
https://twrp.me/Devices/Samsung/
2. In TWRP select backup and choose only EFS and back it up to your external card (preferably also to your PC)
that will backup your IMEI etc

Huzaifa_Aziz said:
1. Go here to download TWRP an install it via ODIN,
https://twrp.me/Devices/Samsung/
2. In TWRP select backup and choose only EFS and back it up to your external card (preferably also to your PC)
that will backup your IMEI etc
Click to expand...
Click to collapse
EFS?

rheh104 said:
EFS?
Click to expand...
Click to collapse
Encrypted File System

rheh104 said:
EFS?
Click to expand...
Click to collapse
I think you need to go tutorial section first. And start from scratch. You won't be able to find the cotrects steps on dumb luck. Thank me later.

Huzaifa_Aziz said:
I think you need to go tutorial section first. And start from scratch. You won't be able to find the cotrects steps on dumb luck. Thank me later.
Click to expand...
Click to collapse
Send me a link to it please, thanks!

rheh104 said:
Send me a link to it please, thanks!
Click to expand...
Click to collapse
You have Exynos or Qualcomm variant?
I would suggest you start off from here
[LINK]https://forum.xda-developers.com/galaxy-s7/help/help-thread-question-noob-friendly-t3341138[/LINK]

rheh104 said:
Send me a link to it please, thanks!
Click to expand...
Click to collapse
I hope you have read about ODIN and FLASHING recovery by now,
https://forum.xda-developers.com/galaxy-s7/development/recovery-official-twrp-herolte-t3333770 go here and flash the TWRP RECOVERY and then install any custom ROM. or
Get original Firmware from Sammobile.com and Flash it via ODIN