[Q] How to Go back to Factory State after a custom ROM - Nexus S Q&A, Help & Troubleshooting

I rooted my Nexus S and then installed Nexus Beam. Now I have all the fun of rooted device o I would like to go back to the original factory installed version of Nexus S. Can some one guide me,. how can I go back to factory installed state after installing a custom ROM?

use this please http://forum.xda-developers.com/showthread.php?t=1445570
if you have i9020t if not use this http://forum.xda-developers.com/showthread.php?t=1063664 for your phone model.

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[Q] (Q) Good Factory Rom for selling my device

Hey people. I just bought a Nexus S and to my disappointment I bought the GT-19020a (att) and I am on the T-mobile network so no 3G+ Does anyone know of a good ROM to use for selling my device? I would like for it be a factory ROM but still unlocked. Again it would need to be for the 19020a (att). Any help would be appreciated.
If you want a stock rooted rom and you have rom manager on you phone looks under drewgaren roms in the download section there is a stock one there.
Sent from my Nexus S using Tapatalk
Just grab the full stock rom and flash via CWM: http://forum.xda-developers.com/showthread.php?t=1063664
This will in no way change the status of the boot loader. If you want it to be rooted you'll just have to reflash the su binary via recovery.

[Q] I need some answers about Nexus S

So I bought Nexus S from second hand recently mostly because it will get official ICS support from Google.
So because it's second hand buy, I really don't know if I'm using original bootloader, kernel, radio etc.
It's rooted (because I have Superuser app), I think it has stock 2.3.6 android (build number GRK39F) and kernel version 2.6.35.7-gf5f63ef, [email protected]#1.
Can someone who use stock android and original kernels confrime to me that this is right version?
I really want to update to ICS using incremental update which I found here (http://forum.xda-developers.com/showthread.php?t=1445635) but I'm affraid to don't screw something because of bad experience when I radio bricked my desire
Can I update it to ICS or I need to do unroot or something?
Just download the correct stock ICS rom for your device (if it is I9020T or I9023) ,put it on the SD root and then flash it using the stock or CWM recovery and be done with it (if you need the ICS)
most likely you won't be update by OTA because you are rooted (system file verification will fail)
just download stock ICS ROM and flash it ...
Ota will install fine if its a stock rom with just root. The update script basically checks that everything that should be there is there . If there is something else in there like su it don't matter.
flashing a new rom is the best way to go if you have cwm installed already
I succesfuly flashed ICS and first impressions are very good.
But I think I lost recovery...
jurvyx said:
I succesfuly flashed ICS and first impressions are very good.
But I think I lost recovery...
Click to expand...
Click to collapse
flash a CWM recovery via adb , or there is TWRP recovery in DEV section , which is very good .

[Q] Gingerbread to jellybean Neo V

I have rooted Neo V Gingerbread. I am going to unlock the bootloader so that I can flash custom ROM like MIUI or Paranoid Android.
I got 2 questions
1) Is Unlocking Bootloader by official technique is safe?
2) Can I directly go from Gingerbread to Jellybean? Or do I have to factory reset my phone first(Have backed up my ROM using CWM), then go to ICS first and then flash Jellybean ROM?
Help a Noob please! Thnx
coolSERAZ said:
I have rooted Neo V Gingerbread. I am going to unlock the bootloader so that I can flash custom ROM like MIUI or Paranoid Android.
I got 2 questions
1) Is Unlocking Bootloader by official technique is safe?
2) Can I directly go from Gingerbread to Jellybean? Or do I have to factory reset my phone first(Have backed up my ROM using CWM), then go to ICS first and then flash Jellybean ROM?
Help a Noob please! Thnx
Click to expand...
Click to collapse
1) It usually is, but you're doing it at your own risk. Only continue if you know what you're doing.
2) I think you can go to it directly, though I'm not 100% sure.

[Completed] [Q] samsung galaxy mega 6.3 i 9205

good day everyone!
would like to seek help about my phone..my phone is running a custom rom called megafire mj running in 4.2.2 jellybean when i decided to flash stock rom 4.4.2 kitkat using odin..i fallow the step in flashing and odin app says reset after flashing the stock rom 4.4.2 i downloaded from samsung update. my phone rebooted and i put my phone to recovery mode to reset to factory defaults and even clear cache, when the the phone booted up i am ask to choose the language but when i try to select the language i prefer touch screen is not responding..now i cannot use my phone...i bring it to the technician and they flashed another stock rom but still the touchscreen is not reponding. before the flashing of stock rom im not facing this king of issue on my phone, only happens when i flashed kitkat stock rom.. my question is would it be possible to flash back the custom rom megafiremj to my phone? or can i flash back 4.2.2 stock rom from 4.4.2 kitkat? pls help...
im within the metro here in manila,philippines, would be thankful if someone from the metro who can help me to make my phone usable again...
Hi,
I suggest you ask the experts who own your device in this dedicated help thread in your device section,
http://forum.xda-developers.com/showthread.php?t=2329215
Good luck!

[Q] Need Help

When I Unroot my Nexus S gt-i9020T it doesnt get me back to stock recovery while as OS gets back to stock but not recovery.
If i need to flash stock recovery to my device Some one please send me the link for Nexus S stock recovery.
Thanks in Advance

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