Database Users

[Q], kernel help?

Basically I've never flashed a custom kernel before so I'm trying to do some research so if someone could give me some incite or point me in the right direction I'd really appreciate it.
The only thing I'm not sure of is if I flash a custom kernel will it prevent me from receiving any future ota updates? If so, any ideas where to find a flashable stock kernel? I couldn't find one. I really want to stay with the stock rom. Had my fill of custom roms on my phone.
Sent from my Nexus 7

Y u not like roms?!
nick2418 said:
Basically I've never flashed a custom kernel before so I'm trying to do some research so if someone could give me some incite or point me in the right direction I'd really appreciate it.
The only thing I'm not sure of is if I flash a custom kernel will it prevent me from receiving any future ota updates? If so, any ideas where to find a flashable stock kernel? I couldn't find one. I really want to stay with the stock rom. Had my fill of custom roms on my phone.
Sent from my Nexus 7
Click to expand...
Click to collapse
Let's see. AFAIK yes, non-stock kernels will prevent you from getting those long-awaited OTAs (not sure though as the first thing I did after getting my N7 was to flash PA ).
If you really like the stock experience but still want a custom kernel, you must flash a custom recovery to flash kernels. The latest TWRP touch is what you need.
After you've flashed the recovery, just download the kernel zip, reboot to recovery, flash, profit.
As for a kernel, you can go with M-Kernel, DerKernel, franco.Kernel, Faux and so on and so forth. I love M-Kernel personally. You can tweak it with TricksterMOD for a smokin' good overclock as well as purty good battery life
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Also, just asking, what do you mean by a "a flashable stock kernel"? If you already have the stock kernel, why flash the same over it?
AFAIK updates to stock kernel are provided by OTAs.

I guess I was looking for a way to return to the stock kernel if need be. I have my recovery and understand that part. Just trying to make sure I understand kernels better before I brick my n7. Thanks for the help!
Sent from my Nexus 7

i also need a stock flashable kernel..just in cased i wan to revert back...
Sent from both my sexy galaxy nexus and nexus 7 X)

nick2418 said:
I guess I was looking for a way to return to the stock kernel if need be. I have my recovery and understand that part. Just trying to make sure I understand kernels better before I brick my n7. Thanks for the help!
Sent from my Nexus 7
Click to expand...
Click to collapse
Oh, ok. If you flash the stock ROM, it flashes the kernel as well (but it's a lot of work reflashing a ROM just for the kernel )
What you can do is this: extract the stock ROM zip and flash the boot.img you get.
Here's a link to the stock ROM: https://dl.google.com/dl/android/aosp/nakasig-jop40d-factory-efcec044.tgz
Edit: I figured I'd explain the rest as well...
After you download that file, untar it: nakasig-jop40d-factory-efcec044.tgz will untar to a folder probably named:nakasig-jop40d-factory-efcec044
Open that folder. You will find a zip (probably image-nakasig-jop40d.zip or something like that), unzip it.
You'll find four files. boot.img is the one you need. Flash it to your device with fastboot.
If you wan a flashable zip, unzip any custom kernel, replace the awesome custom boot.img with the boring stock one and rezip. You should be able to flash it from TWRP or CWM.
Note that the stock kernel nukes CWM on first boot. I assume you don't have root. Do this:
1. Connect the N7 to your PC. [you should have debugging enabled in dev options]
2. Open an adb shell and type this: mv /system/recovery-from-boot.p /system/recovery-from/boot.p.bak
3. ???
4. Profit
[If you do have root, open a file manager, remount /system as read/write and rename /system/recovery-from-boot.p to something.]
Click thanks if I helped!

That's why I was hoping to find the JOP40D stock kernel as a flashable zip. But I'll give the boot. I'm a shot. Thanks again!
Sent from my Nexus 7

nick2418 said:
That's why I was hoping to find the JOP40D stock kernel as a flashable zip. But I'll give the boot. I'm a shot. Thanks again!
Sent from my Nexus 7
Click to expand...
Click to collapse
I added some stuff, see if it helps.
It would be nice if you clicked "thanks" below my post

stock flashable 4.1.2 kernel for grouper(put up by faux as a "reset" kernel) http://faux.androidro.ms/grouper-faux123-reset-kernel-4.1.2.zip (should be fine on 4.2.1)
flashable in twrp or cwm recovery. no hoops to jump through flashing or after flashing this. it doesnt nuke your recovery.

simms22 said:
stock flashable 4.1.2 kernel for grouper(put up by faux as a "reset" kernel) http://faux.androidro.ms/grouper-faux123-reset-kernel-4.1.2.zip
flashable in twrp or cwm recovery. no hoops to jump through flashing or after flashing this. it doesnt nuke your recovery.
Click to expand...
Click to collapse
Will that work with OP's 4.2.1?

Awesoham said:
Will that work with OP's 4.2.1?
Click to expand...
Click to collapse
yea. i occasionally run a 4.1.2 trinity kernel on my 4.2.1 rasbean jelly rom

Can I OTA update?

Hey I'm new to the forums but been reading them for a while and I just have a question with OTA updates. I have a nexus 4 that's been rooted and have clockwork mod. I have also flashed the .33 baseband on 4.2.2. I have stock rom but Franco kernel however I backed up the stock kernel with his updater app.
I know I can't OTA with the kernel but flashing the stock one is no big deal. Can I OTA with the rest being on there?
Also if I do the lte wifi hotspot fix will that stop the OTA update as well?
Thanks in advance.
Sent from my Nexus 4 using xda premium

As long you have clockwork mod on the rom you can not OTA...its always going to be manual way of flashing the OTA and that process will remove clockwork mod but using apps like voodoo keeps you rooted so you can easily install clockwork mod again after the update.
No Recovery+Stock ROM+Stock Kernel+Stock Latest Radio= auto OTA update.
I hope that made sense..but i could be wrong but that's what works for me.
Sent From My Beasty Nexus 4 with Awesome Beats.
ROM: Mysterious AOKP 4.2.2
Kernel: Faux 123 latest tbm.
Recovery: TWRP

Helderg1984 said:
Hey I'm new to the forums but been reading them for a while and I just have a question with OTA updates. I have a nexus 4 that's been rooted and have clockwork mod. I have also flashed the .33 baseband on 4.2.2. I have stock rom but Franco kernel however I backed up the stock kernel with his updater app.
I know I can't OTA with the kernel but flashing the stock one is no big deal. Can I OTA with the rest being on there?
Also if I do the lte wifi hotspot fix will that stop the OTA update as well?
Thanks in advance.
Sent from my Nexus 4 using xda premium
Click to expand...
Click to collapse
You CAN ota if you have a custom recovery.
However, the WiFi hotspot fix will kill it.
I made a guide with all the info you need. http://forum.xda-developers.com/showthread.php?t=2145848
Sent from my Nexus 7 using xda premium

So if anything is modded at all except for basic root I won't be able to apply the update that arrives to my phone directly right? I will have to flash it in cwm? I assume I will have to wipe cache and such before I apply the zip right?
Do I have to revert anything back stock or can I just flash the zip directly over what I have now and just re apply the kernel and baseband?
Sent from my Nexus 4 using xda premium

Sorry one more thing with the latest SU I will stay rooted I think but I will lose cwm and have to re obtain it or will I keep it if survival mode is checked?
Sent from my Nexus 4 using xda premium

Helderg1984 said:
Sorry one more thing with the latest SU I will stay rooted I think but I will lose cwm and have to re obtain it or will I keep it if survival mode is checked?
Click to expand...
Click to collapse
If you flash it from CWM then you will keep CWM and also keep root (if you say yes when it asks you).
Sent from my Nexus 4

Sorry I am a bit confused still, when I get the update.zip and flash it in CWM do I have to wipe or no? and if I don't will everything stay the same? or will I lose my 0.33 baseband and kernel? I'm also wanting to do the lte hotspot fix so would I lose that too?
steviewevie said:
If you flash it from CWM then you will keep CWM and also keep root (if you say yes when it asks you).
Sent from my Nexus 4
Click to expand...
Click to collapse

Helderg1984 said:
Sorry I am a bit confused still, when I get the update.zip and flash it in CWM do I have to wipe or no? and if I don't will everything stay the same? or will I lose my 0.33 baseband and kernel? I'm also wanting to do the lte hotspot fix so would I lose that too?
Click to expand...
Click to collapse
You don't have to wipe.It does not matter if you wipe or not, you will still lose your base band, you'll just have to flash the old baseband again. As for the kernel if the ota comes with a new kernel your old stock kernel will be replaced with the new one in the ota.

You actually can accept a ota update with a custom recovery but you have to be stock everything else, no other mods or anything. The ota will install fine and youll see that it goes through your custom recovery when updating. After the update you will lose root and your custom recovery however unless you recovery someone holds onto it.

As I know, we need to modify something after installing custom recovery. Else, stock recovery will be installed upon reboot. So even after modifying, OTA still works ?
Rizy7 said:
You actually can accept a ota update with a custom recovery but you have to be stock everything else, no other mods or anything. The ota will install fine and youll see that it goes through your custom recovery when updating. After the update you will lose root and your custom recovery however unless you recovery someone holds onto it.
Click to expand...
Click to collapse
Sent from Mako

So bascially no matter what i have on the phone update.zip will go through fine and put on the phone what it contains and it's up to me to put everything back? Also I've heard mixed opinions if I will lose root and CWM, mostly people say it will give me an option to keep it after applyng the update.
heat361 said:
You don't have to wipe.It does not matter if you wipe or not, you will still lose your base band, you'll just have to flash the old baseband again. As for the kernel if the ota comes with a new kernel your old stock kernel will be replaced with the new one in the ota.
Click to expand...
Click to collapse

heat361 said:
You don't have to wipe.It does not matter if you wipe or not, you will still lose your base band, you'll just have to flash the old baseband again. As for the kernel if the ota comes with a new kernel your old stock kernel will be replaced with the new one in the ota.
Click to expand...
Click to collapse
Everything about this post is incorrect.
I don't mean to be a jerk but I've seen you post a lot of false info lately. I know you'd like to help, but it only confuses people when they see contradictory info.
Helderg1984 said:
So bascially no matter what i have on the phone update.zip will go through fine and put on the phone what it contains and it's up to me to put everything back? Also I've heard mixed opinions if I will lose root and CWM, mostly people say it will give me an option to keep it after applying the update.
Click to expand...
Click to collapse
Just read the thread I linked earlier. It has answers to your questions.
Sent from my Nexus 4 using xda premium

El Daddy said:
Everything about this post is incorrect.
I don't mean to be a jerk but I've seen you post a lot of false info lately. I know you'd like to help, but it only confuses people when they see contradictory info.
Just read the thread I l
Can you tell me what's wrong with what I said? I was assuming he was on stock rooted with a custom recovery. Is it not true that if you get an ota update and it contains a new baseband and new stock kernel it will overwrite the last last stock kernel and baseband.
Click to expand...
Click to collapse

heat361 said:
El Daddy said:
Everything about this post is incorrect.
I don't mean to be a jerk but I've seen you post a lot of false info lately. I know you'd like to help, but it only confuses people when they see contradictory info.
Just read the thread I l
Can you tell me what's wrong with what I said? I was assuming he was on stock rooted with a custom recovery. Is it not true that if you get an ota update and it contains a new baseband and new stock kernel it will overwrite the last last stock kernel and baseband.
Click to expand...
Click to collapse
No it doesn't overwrite anything. It just fails.
OTA's contain patches. Not complete files. If the original file isn't there it will abort.
I can see how this can be confusing because it is different from custom roms.
Sent from my Nexus 4 using xda premium
Click to expand...
Click to collapse

But thats only if he has the lte fix right. So if he just flashes a stock kernel without that patch, the ota could work.
For example the stock boot.img

I'm rooted with cwm, custom kernel and old baseband, stock rom. I mean I can very easily revert my kernel back to stock and flash the newest baseband.
The only thing is there's a bunch of stuff I might want to do more but don't want to make it hard to update since it's important to me.
Sent from my Nexus 4 using xda premium

Sent from my Nexus 4 using xda premium

heat361 said:
But thats only if he has the lte fix right. So if he just flashes a stock kernel without that patch, the ota could work.
For example the stock boot.img
Click to expand...
Click to collapse
Yep. The phone needs to be 100% stock with the exception of the recovery to complete the OTA. If the files,kernel,radio, etc. are replaced to the original state you'd be good to go.
PS. Sorry if I came off as a jerk this morning. I had a case of the Mondays.
Helderg1984 said:
I'm rooted with cwm, custom kernel and old baseband, stock rom. I mean I can very easily revert my kernel back to stock and flash the newest baseband.
The only thing is there's a bunch of stuff I might want to do more but don't want to make it hard to update since it's important to me.
Sent from my Nexus 4 using xda premium
Click to expand...
Click to collapse
Just as I wrote above, You can do as many modifications as you want, just make sure you bring the phone back to stock before you flash the OTA.zip, otherwise it will fail.
When the new OTA comes out I will update my OTA Help-Desk thread with all the new requirements.

Helderg1984 said:
So bascially no matter what i have on the phone update.zip will go through fine and put on the phone what it contains and it's up to me to put everything back? Also I've heard mixed opinions if I will lose root and CWM, mostly people say it will give me an option to keep it after applyng the update.
Click to expand...
Click to collapse
Just watch this its eazy as 1 2 3!!!
http://www.youtube.com/watch?v=ky5miA8ilr0

[Q] how to flash cwm?howwww?

okay, i looked around a bit , found out cwm is temporary and need to flash a kernel. but which kernel? and if i wish to undo this in the future, how to do so?

TheStormBreaker said:
i am seriously confused now..how to flash cwm? i cannot find anything.
do i need to flash a kernel or can i directly flash roms?
helllllllp!
Click to expand...
Click to collapse
If you already rooted the phone then you can install ROM Manager which can be used to flash the latest CWM recovery image.
https://play.google.com/store/apps/details?id=com.koushikdutta.rommanager
Sent from my SGH-T999 using xda app-developers app

TheStormBreaker said:
okay, i looked around a bit , found out cwm is temporary and need to flash a kernel. but which kernel? and if i wish to undo this in the future, how to do so?
Click to expand...
Click to collapse
hell fusion,gnu,merruk, and white kernel have cwm..if u want to undo just flash stock kernel

..can someone know how to flash the kernel with steps??

greatwhovian said:
If you already rooted the phone then you can install ROM Manager which can be used to flash the latest CWM recovery image.
https://play.google.com/store/apps/details?id=com.koushikdutta.rommanager
Sent from my SGH-T999 using xda app-developers app
Click to expand...
Click to collapse
you are providing wrong information,
ROM manager does not work with some kernels and could potentially result in a software malfunction,
@op and everyone else having the same question:
please just read the original instructions from the kernel developer to ensure success of the installation

Loki'd Slim Bean Won't Boot

Anyone else have the issue of it just continuously trying to boot? I'm using the CWM auto-loki that's in the development section.
Reflashed it three more times. Now it freezes @ Samsung battery screen when charging, or if I wait long enough it'll unfreeze. Still loops at Slim Bean startup, what sucks though is that for one thing it mounts as an MTP device so it seems like it's on but just not initializing, another thing is that the original flash I was able to get to the slim bean battery charging screen (but obviously still couldn't turn it on)
Thinking it might be a kernel issue, since I installed ktoonsez's AOSP kernel when I installed it. Any recommendations of a kernel to use? I'm using the CWM recovery that has auto loki so, I could probably use ones made for 9500,9505, etc.
(Pasted this from the Slim Bean thread, haven't gotten an answer in like 5 hours and it's a little urgent xD. I'm on the AT&T S4 of course, any other information I'll be glad to provide. Hopefully this is just a simple fix)

I bet is related to the kernel. I have been using Slim Bean flawlessly, with none of the issues you mention. Using TWRP to flash and recover.
Sent from my SGH-I337 using xda app-developers app

Spunjah413 said:
I bet is related to the kernel. I have been using Slim Bean flawlessly, with none of the issues you mention. Using TWRP to flash and recover.
Sent from my SGH-I337 using xda app-developers app
Click to expand...
Click to collapse
What kernel are you on then, just stock?

Stock Kernel.
Sent from my SGH-I337 using xda app-developers app

I installed Slim Bean with Ktoon kernel and it worked fine. Just make sure to wipe system and the caches. It did take a little longer to boot the first time but after that it was all good.
Sent from my SGH-I337 using xda app-developers app

Isn't ktoonsez kernel for a Touchwiz based ROM?
Slim Bean is AOSP, therefore i'm not sure they jive correctly, which would clearly explain the OP's problem.
EDIT: Didn't realize he updated an AOSP based Kernel. In anycase OP, I would still attempt using the stock kernel to see if you problems get fixed.

Slim is already LOKI patched, so don't use the CWM that auto-patches, use TWRP

LostInMyHead said:
Slim is already LOKI patched, so don't use the CWM that auto-patches, use TWRP
Click to expand...
Click to collapse
Patching a patched kerenel changes nothing. Dan said if you run loki on a patched recovery or kernel it just send the original to the output. Nothing happens.
Sent from my AT&T S4 running an international ROM.

_Dennis_ said:
Patching a patched kerenel changes nothing. Dan said if you run loki on a patched recovery or kernel it just send the original to the output. Nothing happens.
Sent from my AT&T S4 running an international ROM.
Click to expand...
Click to collapse
Thanks for clarification.

LostInMyHead said:
Slim is already LOKI patched, so don't use the CWM that auto-patches, use TWRP
Click to expand...
Click to collapse
I know someone else clarified this already, but when I downloaded Slim it actually wasn't Loki patched for whatever reason, and I couldn't boot without reinstalling stock. I did download the one in the right thread, it just didn't have a boot.lok in it for whatever reason. Anyways, I'm gonna try reflashing and wiping /system another time, wish me luck. I don't have the original kernel backed up though because I'm an idiot, so does anyone have a link to that? If not I could probably scour it out somewhere, but just wondering for convenience's sake.

iKat said:
I know someone else clarified htis already, but when I downloaded Slim it actually wasn't Loki patched for whatever reason, and I couldn't boot without reinstalling stock. I did download the one in the right thread, it just didn't have a boot.lok in it for whatever reason. Anyways, I'm gonna try reflashing and wiping /system another time, wish me luck. I don't have the original kernel backed up though because I'm an idiot, so does anyone have a link to that? If not I could probably scour it out somewhere, but just wondering for convenience's sake.
Click to expand...
Click to collapse
In advanced restore boot is the kernel.
Download the ROM and addons again, you shouldnt have any issues... If you are currently on stock, do a comprehensive wipe, a manual format of system and data

LostInMyHead said:
In advanced restore boot is the kernel.
Download the ROM and addons again, you shouldnt have any issues... If you are currently on stock, do a comprehensive wipe, a manual format of system and data
Click to expand...
Click to collapse
No files found :/ I guess I'll reinstall stock, back stuff up, and do the comprehensive wipe like you said. I really, really want Slim, lol.
Edit: Well, ****. Reinstalled stock with Odin and now no matter how many times I reboot I only have a status bar.. phone is fairly hot too. So, now I don't even have access to recovery ;-;

iKat said:
No files found :/ I guess I'll reinstall stock, back stuff up, and do the comprehensive wipe like you said. I really, really want Slim, lol.
Edit: Well, ****. Reinstalled stock with Odin and now no matter how many times I reboot I only have a status bar.. phone is fairly hot too. So, now I don't even have access to recovery ;-;
Click to expand...
Click to collapse
Flash back to stcok with ODIN
Use the one click tool to get LOKI recovery
The ROM and addons are in the OP of the SLIM LOKI Thread

LostInMyHead said:
Flash back to stcok with ODIN
Use the one click tool to get LOKI recovery
The ROM and addons are in the OP of the SLIM LOKI Thread
Click to expand...
Click to collapse
Oh my lord, thank you good sir. Slim Bean is up and working as of right now ^^;. May be a little bit before I apply a custom kernel though o.o

[Q] [HELP] I flashed wrong kernel file and now my device don`t boot

So, i was in a hurry and i downloaded the wrong kernel. I wanted to download the linaro franco kernel for android 4.4, but instead i downloaded this one "franco.Kernel-nightly-r14-linaro.zip". this is an old version.
So now, my device does not boot and i cant install the correct kernel file.
What should I do?

Use a toolkit like wug and install through it the stock or any custom kernel you want.
Unleashed by my Nexus 4

But...
But, there is a way to only replace the kernel or i have to re-install the ROM?
Re-install only the kernel may affected something?
Thanks a lot.

Marcelo Diniz said:
But, there is a way to only replace the kernel or i have to re-install the ROM?
Re-install only the kernel may affected something?
Thanks a lot.
Click to expand...
Click to collapse
Didn't make a nandroid before you flashed it?
Start fresh... In the future make a nandroid and make dam sure you have correct files before you flash
Sent from my Nexus 4 using XDA Premium HD app

fastboot flash boot kernel.img

OK
I flashed the stok room again using WugFresh toolkit.
Totaly woks.
Thaks for help.