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[Q] How can I return to stock kernel ?

I am new to the nexus s , but have been a heavy galaxy s user. I noticed that flashing roms etc is a bit different from what I am used to on my galaxy s .. I did not see any thread containing stock kernels ... So how can I return to stock after I have flashed another kernel ? I have installed the voodoo kernel with ext4, sound and colour enhancement .. But suppose I want to return to my stock gri54 kernel , how can I do that ? Have read allready about fastboot etc etc but then I should have an .img of the stock kernel , correct ?

By flashing back to stock rom, you will get back your stock kernel automatically.
Sent from my Nexus S using Tapatalk

navlem said:
By flashing back to stock rom, you will get back your stock kernel automatically.
Sent from my Nexus S using Tapatalk
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So by flashing back to stock ROM via recovery, does it mean that it will be locked and un-rooted as factory default [like when you first purchase the device]?

navlem said:
By flashing back to stock rom, you will get back your stock kernel automatically.
Sent from my Nexus S using Tapatalk
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But will i not loose everything if i do it like that? And where can i find stock rom. I only found an odin package
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johnkim0011 said:
So by flashing back to stock ROM via recovery, does it mean that it will be locked and un-rooted as factory default [like when you first purchase the device]?
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It will be unrooted, but still with unlocked bootloader.

Bandis710 said:
But will i not loose everything if i do it like that? And where can i find stock rom. I only found an odin package
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The Odin package can put you back to stock rom too.

So what you are saying there is no way to flash only the stock kernel ?? Very confusing .. I am able to flash just another kernel using fastboot but I am not able to flash back the stock kernel using fastboot ? Odin is a last resort method .. haven't seen fastboot .img files of the stock here in the forums ?

I'm not sure if anybody posted any stock kernel file in the forums. If there is any, you can easily download it and install via recovery or fastboot.
Otherwise you can only revert to stock roms because stock roms links are easily available through the forums or samsung firmware website.

Or after you have failed everything, may want to consider Odin. It seems to touch the phone at a lower level compare to other techniques.
follow the instruction on this
http://www.samfirmware.com/WEBPROTECT-i9023.htm
work great for me after all
Samsung i9023
Good luck

Yeah , I also mentioned odin allready .. Used it a lot when I had my galaxy s .. Just thought that since the nexus s can use fastboot I could get rid of odin ..
I am also not used that all has to be flashed to achieve a single goal .. On the galaxy s I could flash the kernel separately and also stcok kernel were easy to find .. I think it is kind of a hassle to reflash a whole rom just because you want stock kernel back ..

Voodoo has stated that his kernel is 'almost' stock, with only voodoo addon to the pure stock kernel. Maybe you can use that?

Some news here?

Hi there!
I was also wondering about this same situation. Let's say I want to stick with the original ROM and try some non-stock kernels. After some tests I know there is an OTA available but I don't want to backup and restore everything (using TB or similar). From what I understood I wouldn't be able to flash stock kernel (in other words, back to full stock ROM + Kernel) and apply OTA update...
What if we just flash boot.img from a nandroid of stock rom+kernel?
RM

Here you go: http://forum.xda-developers.com/showpost.php?p=20442919&postcount=3
Sent from my Nexus S using XDA App

Hoo great!
but, can you tell us where to find or how to get it from the stock ROM and make it flashable? It might be useful for upcoming releases of stock ROM/Kernels.
Thank you once again,
RM
edit: after searching by the filename you gently provided I found this:
hxxp://www.android-hilfe.de/2277361-post1.html
hxxp://www.michalurban.cz/Nexus_S_i9023/Kernel/
seems to be a good compilation, and stock is in the list!

The file I posted is already flashable through CWM. Just wipe dalvik first. Of course make sure you have a Nandroid backup just in case.

Hi,
sure, I noticed that. What I was wondering was how to get this flashable kernels. From the stock ROM full installation file? From a nandroid backup of a stock ROM??
RM

Hi, is any chance to get stock kernel for Jelly Bean 4.1.1? I've got stock rom, Air Kernel and OTA is buzzing me multiple times a day. No luck in upgrade, Error Status 7. I think it's Air Kernel's fault.

0mn1us said:
Hi, is any chance to get stock kernel for Jelly Bean 4.1.1? I've got stock rom, Air Kernel and OTA is buzzing me multiple times a day. No luck in upgrade, Error Status 7. I think it's Air Kernel's fault.
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http://forum.xda-developers.com/showthread.php?t=1572307
Flash factory. Easy.
Sent from my Nexus S using xda premium

[Q] Would anyone benefit from a bone-stock Clockwork Backup?

Been browsing around a bit and noticed that some people want to completely revert back to stock, but they don't want to use ODIN, due to the fact it'll trigger the flash counter for warranty exchanges. It's a backup I made literally IMMEDIATELY after I flashed Clockwork recovery, so it's completely unrooted and untouched. Just wanting to ask around to see if it seems like something useful to others before I upload it. Let me know! Could just flash the stock recovery and be at a completely out-of-the-box state.
Or possibly use it to make a stock flashable .zip?

It wont get rid of root and cwm and super user.
Fortune090 said:
Been browsing around a bit and noticed that some people want to completely revert back to stock, but they don't want to use ODIN, due to the fact it'll trigger the flash counter for warranty exchanges. It's a backup I made literally IMMEDIATELY after I flashed Clockwork recovery, so it's completely unrooted and untouched. Just wanting to ask around to see if it seems like something useful to others before I upload it. Let me know! Could just flash the stock recovery and be at a completely out-of-the-box state.
Or possibly use it to make a stock flashable .zip?
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Click to collapse
Sent from my SGH-I727 using xda premium

Actually I would certainly have a usefor this. I made some boneheaded decision and unistalled.a.couple.bloatware apps before I made my first nandroid.backup
This would be pretty useful when the ics ota comes around.
Sent from my SAMSUNG-SGH-I727 using XDA App

In order to get back to "out of box" condition for warranty/return purposes you need to reinstall 2.3.5 or 2.3.6 stock ROM, KERNEL, and 3e Recovery. The only time (based on what I've read on SR Forum), the custom binary flash counter gets tripped is when you use Odin to flash a Kernel (boot.img). So I think what you are proposing is to flash stock ROM/KERNEL using CWM, then use Odin to flash the stock 3e Recovery partition. Odin should not trip the flash counter if you only Odin flash "recovery.img" and not the "boot.img" (kernel). Correct?

appdroid said:
It wont get rid of root and cwm and super user.
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I was running SkyIce before, fully rooted, and after restoring this, I no longer have root priveledges and Superuser.apk isn't anywhere to be found.
And yes, restoring this to get a stock kernel and everything back, then just flash stock 3e with Odin to get the recovery partition back to stock.
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stock kernel

hei guys .. i have installed the 4.0.4 zip ...and was wondering..if i want to flash air kernel ... how can i return to the stock one ? if i flash a clean 4.0.4 backup made with clockworkmod recovery will it return me to the stock kernel ? sorry for the noob question .. . thanks

plese help...anyone who knows.. i want to flash another kernel...but dont want to compleetly loose this stock one

Yeah, that will work, but you will be flashing the entire ROM again.
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raducux said:
plese help...anyone who knows.. i want to flash another kernel...but dont want to compleetly loose this stock one
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you cant have both, its either one or the other. if you dont like the custom kernel, all you have to do is reflash the rom. or you can pull the boot.img from the rom and flash it via fastboot or terminal emulator. but, i bet, for you itll be easier to just reflash the rom.

thanks
just wanted to know if a clockworkmod backup would restore my kernel as well . thank you

Make a backup of your rom with stock kernel, flash another kernel, and if you don't like you can restore your backup.
Sent from my Nexus S 4G using xda premium

restoring from a backup

Im a little ashamed but I have never restored from a backup before in recovery. Do you have to wipe and all that prior to restoring or just hit restore?
Sent from my HTC One X using XDA

joho5 said:
Im a little ashamed but I have never restored from a backup before in recovery. Do you have to wipe and all that prior to restoring or just hit restore?
Sent from my HTC One X using XDA
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I believe the restore wipes automatically...I could be wrong though. I haven't had to restore a rom in months.

It does. Restore formats the partitions then restores to them.

restoring stock rom without backup
Speaking of restoring through recovery, Is it possible to restore my phone to stock rom without the back up? If not, then RUU to stock 1.85 is the only way right? I installed a new rom yesterday, and I decided to wipe everything including SD so I basically erased my stock rom backup.

JCon0320 said:
Speaking of restoring through recovery, Is it possible to restore my phone to stock rom without the back up? If not, then RUU to stock 1.85 is the only way right? I installed a new rom yesterday, and I decided to wipe everything including SD so I basically erased my stock rom backup.
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The best thing for you to do now is restore via the RUU to stock.
Once you have that done you can go ahead and flash other ROM's
Good Luck!:good:

BIGMOH said:
The best thing for you to do now is restore via the RUU to stock.
Once you have that done you can go ahead and flash other ROM's
Good Luck!:good:
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Right on! I am just curious just in case I need to send my phone back for warranty.. thanks!

[Solved] [Q] Help! Can't succesfully flash roms...

Hi, I just need alot of help! I've been a rogers captivate owner for a year and i've rooted, sim unlocked, flashed many, MANY roms with success. I have also soft bricked my cappy a few times but odin restored it back to stock every time where i started over.
So basically, i soft bricked my cappy, used odin to restore to stock rogers gingerbread 2.3.3 , rooted, used odin to install corn kernel and now every time i wipe data and everything in recovery and flash a rom, it says successful but when i restart, it just gets stuck at the " samsung I896 " screen and doesn't go any further. I can't go into recovery or do anything, but i can succesfuly odin back to stock gb. I've used this same procedure many times before and it always worked but not this time. The only difference there was, was that when it got soft bricked this time, I was going from MIUI JB to Paranoid Android JB instead of ics or gb custom roms.
Can anyone please please help me out here? I really hate stock samsung roms and I LOVED JB when i had it, and i really want it back! I would really appreciate anyone's help! Thankyouuu !
[EDIT] Thankyou everyone who tried to help, i figured it out and resolved the problem, the problem was i was wiping data/factory reseting in cwm which i shouldn't have been doing.

What about using Odin to flash a kernel compatible with the Paranoid Rom, then flash the Rom through that kernel's recovery...
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4-2ndtwin said:
What about using Odin to flash a kernel compatible with the Paranoid Rom, then flash the Rom through that kernel's recovery...
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Yeah, but paranoid android comes with its own recovery, and oh i forgot to mention, i have tried many times, and sometimes after i flash the paranoid rom, and reboot, the phone will boot but directly to recovery when i normally boot it, so i can flash the rom through its own recovery but still it just boots into recovery directly nothing else, and then i go back to stock and i've been on stock for like a month now, but im really missing paranoid androidd.

Wait i think i found the solution guys please helpp ! on stock when im about to flash the new rom, do i clear user data/ wipe data whatever it is in cwm ? Im doing that with faliure, am i not supposed to?