Develop Bugs

[Q] Upgrading Rom

Hi i am pretty new to his i have upgraded to CM7 and everything works fine but i noticed posts about changing the kernal, I am now looking to change to a new rom, the RCMIX do i have to change a kernal or shall i just full wipe and install rcmix zip from the recovery

xvicedice said:
Hi i am pretty new to his i have upgraded to CM7 and everything works fine but i noticed posts about changing the kernal, I am now looking to change to a new rom, the RCMIX do i have to change a kernal or shall i just full wipe and install rcmix zip from the recovery
Click to expand...
Click to collapse
Just a full wipe, and flash RCMIX from recovery that will install it's own kernel.

i believe you come from Samsung or any other device where you need to flash kernel first and then flashing rom.
HTC is different, the rom itself contain the kernel. Just flash the rom, it contains the kernel.

Try out the ROM first, and then if you want to further optimize your overclocking, you can try other kernels. (usually the built in rom will work just fine)
Personally I recommend Jkoljo's utility to do that

If you do find a kernel you like and you flash another ROM you will have to re-flash the kernel again.
This is because, as previously stated, ROMs will install their own Kernel.
Sent from my Desire HD using XDA Premium App

[Q] Is it possible to undo a kernel once installed?

I'm using the stock Gingerbread "Leak" rom version 4.12.651.1 that was leaked recently and I played around with it at first. Took several pictures and videos and enjoyed getting back to having Sense on my phone.
I used Kernel Manager Lite to download and install the Netarchy Toastmod-cfs-havs-more-sbc kernel and at now everytime I open up the camera it shows a white screen and I can't take a picture or video anymore.
Is there a why to uninstall or undo this kernel without having to reflash my Evo? I'd like to go back to just the stock kernel i guess. I even tried to use the Kernal Manager Lite to download and install a different Netarchy Toastmod kernel but it wouldn't install it over a previous kernel and when I clicked on the kernel I already have installed it won't give me an option to uninstall it...
Thanks for any help you guys can give me.

Find the stock kernel for that ROM and flash in recovery after wiping cache and dalvik cache.I will try to find stock kernel for that ROM.

Yeah there's no way to undo once u flash a kernel.....may I make a suggestions for ya foe the future.....Ive been doing this for a while......flash the ROM and make a backup once yur all setup...this way u can tinker with the rom and kernels and themes and what not.......and if those tweaks don't work for ya......u got a backup of a fully stock rom......
Sent from my PC36100 using XDA Premium App

Thanks guys for the awesome advice!
Reverepats, it's funny you said that because that's the first thing that I thought about after this happened and I'm still kicking myself for not backing it up before flashing the kernel LOL It'll be a lesson learned I guess
Ianmb, that would be AWESOME if someone had this. I'll keep looking for this too but if I have to I guess my only recourse would be to wipe it all and reflash all over again... /sigh

There is a post for a working kernel for that ROM on the second page if the ROM is the stock 4.xxx. Stock kernel 15 I think, can't upload file from my phone?

ianmb, thanks for looking but I can't find any stock kernel #15 out there. not even google can help me =/
So it's possible to reflash a kernel over an already installed kernel? If i find the stock kernel how do I go about installing it? Via recovery?

Forgive me if I'm wrong...but if you just reflashed the rom without wiping, I believe it would install the stock kernel that came with the rom
Sent from my nightly EVO

TwhiT said:
ianmb, thanks for looking but I can't find any stock kernel #15 out there. not even google can help me =/
So it's possible to reflash a kernel over an already installed kernel? If i find the stock kernel how do I go about installing it? Via recovery?
Click to expand...
Click to collapse
Yes you can flash a new kernel over an installed kernel...just wipe cache and dalvik prior to flashing
Sent from my nightly EVO

How/When to install Kernel?

At what point do I install a new Kernel?
I'm about to flash a new ROM and it is recommended to use a particular Kernel. At which point do I do this? Just before the first boot? After the first boot?
Thanks!

Kernel comes with the ROM you are flashing. So my suggestion is to try the one that came along with the ROM. If for some reason you are not satisfied with it may it be high battery drain, undervolting, overclocking, or missing governor options, that's when you look for another kernel.
There are 2 types of kernel for Desire, Sense based or AOSP based. You can't use one with the ROM based with the other.
You install new kernels the same way you flash a ROM. Kernel comes in a flashable zip. ONLY wipe dalvik and cache before flashing a new kernel. No need to wipe system at this point. Yeah flash it after the first boot, although flashing it right after the rom wouldn't hurt I believe.

Just flash it right after you flashed the ROM.

MatDrOiD said:
Just flash it right after you flashed the ROM.
Click to expand...
Click to collapse
Okay thanks a bunch!

Cheers! That's what I was after! ;-)
Sent from my HTC Desire using xda premium

Just flashed Calkulins and a couple questions

So i am new to Samsung (coming from a launch evo) and watched the QBKING77 videos and rooted and flashed Calkulins rom pretty easily. So far pretty simple but I have a question.
I am on stock EL29, What confuses me is the list of all the different modem .zip/.tar that are listed in the Caulkins thread. I couldn't really find a thread or video explaining what the difference is between the many different modems, or what the heck a modem is even. or if i should even worry about those at all. Should i just stick to the stock kernel that came with the rom? If i do decide to change the modem do i just flash/odin and im all set? or do i have to re flash the rom?
From what i learned so far, the kernel and phone radios are one in the same right?

Modem = radio. Also known as baseband under your settings - about phone. Modems are flashed independent of a ROM or kernel.
You can mix and match anytime you'd like. If you have solid service on EL29, no need to switch.
You can use any modem on any gingerbread or ics rom. If using a GB rom, you can't use an ics kernel and vice versa.
Hope that helps

.zip is for flashing via Clockwork Recovery. .tar/.bin is for flashing via ODIN. Most importantly it's vital to read and reread everything and also ask any questions before flashing, like you're doing now. I make Nandroid backups anytime I'm about to make ANY changes. Good luck.

Also keep in mind that anything with F in the version (ex FC07) is an unofficial leak. The latest official is EL29, which you are already on.
As a good practice when I switch modems, is to update PRL and profile then reboot.

Components come in the following packages. These packages will come either in .zip or .tar/.bin form.
1. Modem (Always separate, can use any Modem with any rom)
2. ROM (With Kernel or Without Kernel)
3. Kernel (With CWM or Without CWM, use ICS kernel for ICS rom. Use GB kernel for GB rom)
CWM = Flash .zip and make Nandroid backup
Odin = Download Mode flashing tool that can flash .tar/.bin. It can be used
Don't go around flashing your radio all the time. It can be dangerous and very brick easy.

Thank you guys! This is the info I needed. I'm sticking with EL29 for now since I'm having zero issues on the radio side. And I wasn't going to flash ANYTHING via Odin until I learned more about how it all worked.

Do I need to manually update the kernel when installing Calkulin's 2.9.2 ROM?
I installed Calkulins 2.9.2 ROM quite a while back and have been happy with it. I believe I am on the stock EL29 modem (my baseband version says S710.10 S.EL29).
I am confused about the kernel. When installing Calkulin's ROM, did I also install the "Rogue" kernel? Or did the kernel not change from the stock kernel that was on the phone from before.
From what I have read I believe that if I am still on the stock kernel then I would not be gaining the battery life benefits of the ROM because the scripts installed by Calkulin's ROM would not be running.
Currently my "kernel version" says "2.6.35.7-SPH-D710.EL29-CL852097". I believe that this is the stock kernel from Sprint. If I need to install the "Rogue" kernel, (1) where do I get it from and (2) how do I know I am using the right one for Calkulin's version 2.9.2 (and not V 3.0)?
Thanks for any assistance you can provide,
Kevin

You can find kernels in the wiki in the stickies in dev section. If you turn your phone off completely( no light on the buttons at them bottom). Then you push and hold volume up and power at the same time. Wait for it to go into recovery. Does it say e3 with blue letters or is there a green backround?
Sent from my SPH-D710 using Tapatalk 2

When I go into recovery on the top it says "Rogue ET Recover 1.1.2 (CWM v5.0.2.7)" and the background image says "Team Rogue". I wasn't able to find something that told me what kernel I was on.

Correct me if I'm wrong, but I believe you're on what's called a repacked stock kernel...its the stock el29 kernel with the cwm recovery added to it.
Sent from my SPH-D710 using XDA

Johnny - thats the thing I dont know; I am unsure how to tell what kernel I am on. I have always been under the impression that when I installed Calkulin's 2.9.2 ROM, that it also installed the "Rogue" kernel. But I am now under the impression that I may be on a "stock" kernel.
From what I understand about the ROM, the battery saver tweaks do not work for "stock" kernel. I never quite understood what a "repacked" kernel is.

specialkb01 said:
Johnny - thats the thing I dont know; I am unsure how to tell what kernel I am on. I have always been under the impression that when I installed Calkulin's 2.9.2 ROM, that it also installed the "Rogue" kernel. But I am now under the impression that I may be on a "stock" kernel.
From what I understand about the ROM, the battery saver tweaks do not work for "stock" kernel. I never quite understood what a "repacked" kernel is.
Click to expand...
Click to collapse
K. So there's a couple of things going on here. Let's get you some definitions.
Kernel: Essentially the backbone of the operating system. There are different stock kernels for different versions of Android (one for GB and another for ICS). A stock kernel comes with stock recovery. It is not a good idea to flash anything using this recovery (in some cases it is actually blocked so you can't).
CWM: Clock Work Mod. The original version from Chris. It is considered a "repacked" kernel. It stands apart from a regular kernel because it has a custom recovery built in. There are a few other things packed into it but the main difference is the custom recovery. The EL26 CWM is commonly referred to as stock CWM (not a stock kernel though).
Rogue: Team Rogue is the most common one you'll see for our phones. They took CWM and customized it further. They also developed custom recoveries based if the leaked ICS kernels. There was something causing bricks in the kernels they created, unfortunately we can't quite figure out why until we have source.
If you are seeing Team Rogue when opening recovery you currently have a "customized custom recovery kernel".
If you are flashing anything GB you're ok with what you have. If you're flashing ICS you'll need to use the EL26 CWM.
How this clears things up a bit.

[Q] LiquidSmooth locks up daily - HELP !!!

My phone locks up almost daily and I have to remove the battery and then put it back in to get it going again.
This cant be normal...
I have TeamWin loaded onto it and have installed LiquidSmooth using this. I wiped the Cache, Dalvik, System at least three times before installing LiquidSmooth. I have tried installing it a few times with the same result.
Still, the phone locks up and it generally locks up while I am on a call. It generally doesnt lock up while using an app or browsing.
I am getting kind of sick and tired of removing the back cover and pulling the battery daily....
Any thoughts ?? Help !
INFO:
Phone: Samsung Galaxy S3, AT&T, SGH -I747
Android version 4.2.2
LiquidSmooth: liquid_d2att-userdebug 4.2.2 JDQ39 eng.liquid.20130403.222500 test-keys
LiquidSmooth Version Liquid - JB-v2.1-OFFICIAL
Kernel version: [email protected] #167
(I did try installing AOKP as well, and that gives me an error installing, so I couldnt even get that going - maybe these problems are related??)

Shane24 said:
My phone locks up almost daily and I have to remove the battery and then put it back in to get it going again.
This cant be normal...
I have TeamWin loaded onto it and have installed LiquidSmooth using this. I wiped the Cache, Dalvik, System at least three times before installing LiquidSmooth. I have tried installing it a few times with the same result.
Still, the phone locks up and it generally locks up while I am on a call. It generally doesnt lock up while using an app or browsing.
I am getting kind of sick and tired of removing the back cover and pulling the battery daily....
Any thoughts ?? Help !
INFO:
Phone: Samsung Galaxy S3, AT&T, SGH -I747
Android version 4.2.2
LiquidSmooth: liquid_d2att-userdebug 4.2.2 JDQ39 eng.liquid.20130403.222500 test-keys
LiquidSmooth Version Liquid - JB-v2.1-OFFICIAL
Kernel version: [email protected] #167
(I did try installing AOKP as well, and that gives me an error installing, so I couldnt even get that going - maybe these problems are related??)
Click to expand...
Click to collapse
Hey man,
My suggestion is to use Odin to flash the stock image back to stock and see if the problem persists. If it does, I'd take it back to at&t for a new phone (if you've had it less than a year or you have some sort of insurance plan.)
Sent from my SAMSUNG-SGH-I747 using xda app-developers app
---------- Post added at 02:23 AM ---------- Previous post was at 02:18 AM ----------
If flashing back to stock fixes it, its user error. Make sure you're up to date on everything, I.e boot loader, recovery, everything. If that does nothing for you maybe try flashing the new version of CWM and see if it'll flash right that way.
Sent from my SAMSUNG-SGH-I747 using xda app-developers app

Is it just me or is your lean kernel like years old? Isn't the newest version 7.2?
Same with your rom.. 2.9 is out?
Sent from my SGH-I747 using xda premium

Yes, the kernel could be old. I have never updated it... I hate to admit, but I have no idea what the kernel does actually or how to flash a new one.
I have installed the ROM, but not the kernel obviously....
Any info on what a kernel does? Can I flash it easily with TeamWin ?
I can definitely upgrade the ROM to the latest version of liquidSmooth

Shane24 said:
Yes, the kernel could be old. I have never updated it... I hate to admit, but I have no idea what the kernel does actually or how to flash a new one.
I have installed the ROM, but not the kernel obviously....
Any info on what a kernel does? Can I flash it easily with TeamWin ?
I can definitely upgrade the ROM to the latest version of liquidSmooth
Click to expand...
Click to collapse
Hey man,
If you're going to be flashing custom ROMs you should probably learn what a kernel is. Use the search feature or simply use google. In fact, the xda TV channel just put out a video on kernels this week on YouTube.
Anyways, as I said previously, make sure EVERYTHING is up to date. Including the ROM version. Dont worry about flashing kernels until you have a solid understanding of what they are. I'm almost positive that you are just flashing out of order. Just start from scratch, make sure EVERYTHING is up to date. Good luck.
Sent from my SAMSUNG-SGH-I747 using xda app-developers app

yup, I got up to speed on kernels. (Thanks for the suggestions as I didnt know about Kernels, but now I do...)
So, the plan is to
- wipe: dalvic, cache, etc... (3X)
- install the Bionic Sheep 4.2.2 Kernel
- install ROM (I'll try Hyperdrive and DeadlyVenom and LiquidSmooth again)
- install Google Apps...
I have TeamWin installed obviously.
Hopefully this will get my phone back on track...

Shane24 said:
yup, I got up to speed on kernels. (Thanks for the suggestions as I didnt know about Kernels, but now I do...)
So, the plan is to
- wipe: dalvic, cache, etc... (3X)
- install the Bionic Sheep 4.2.2 Kernel
- install ROM (I'll try Hyperdrive and DeadlyVenom and LiquidSmooth again)
- install Google Apps...
I have TeamWin installed obviously.
Hopefully this will get my phone back on track...
Click to expand...
Click to collapse
Hyperdrive and Deadly venom are touchwiz ROMs, u can't flash bionic sheep with them!!! And u don't need to flash gapps with tw ROMs either!!
Also, u need to flash a kernel after u flash the ROM, otherwise it will be overwritten by the stock kernel for whatever particular ROM u are flashing. I would suggest sticking with the stock kernel for a bit and see how it runs!

Shane24 said:
yup, I got up to speed on kernels. (Thanks for the suggestions as I didnt know about Kernels, but now I do...)
So, the plan is to
- wipe: dalvic, cache, etc... (3X)
- install the Bionic Sheep 4.2.2 Kernel
- install ROM (I'll try Hyperdrive and DeadlyVenom and LiquidSmooth again)
- install Google Apps...
I have TeamWin installed obviously.
Hopefully this will get my phone back on track...
Click to expand...
Click to collapse
What the guy above me said about TW roms is correct. Flashing the wrong kernel is not a good idea. Here's what I do on every flash
- wipe system, data, caches, etc.
- flash rom( and gapps if necessary)
- boot up rom and let it settle for 5 min, then boot back into recovery
-flash correct kernel for the rom's version(check kernel number in about device and custom kernels op), then wipe both caches and fix permissions.
-reboot and enjoy:laugh:

DMF1977 said:
Hyperdrive and Deadly venom are touchwiz ROMs, u can't flash bionic sheep with them!!! And u don't need to flash gapps with tw ROMs either!!
Also, u need to flash a kernel after u flash the ROM, otherwise it will be overwritten by the stock kernel for whatever particular ROM u are flashing. I would suggest sticking with the stock kernel for a bit and see how it runs!
Click to expand...
Click to collapse
Which Kernel would I need to use then for Touchwiz ROM's ???
And which kernel for LiquidSmooth and AOKP ??

Shane24 said:
Which Kernel would I need to use then for Touchwiz ROM's ???
And which kernel for LiquidSmooth and AOKP ??
Click to expand...
Click to collapse
Like I said, I would suggest sticking with the packaged kernel that comes with whatever ROM that you are going to flash, run it for a few days, after that if u still feel the need for something more, go with a custom kernel! Ktoonsez makes an excellent kernel, one for tw, and one for aosp, u just have to pick the right one according to which ROM you're running!! Good luck...

DMF1977 said:
Like I said, I would suggest sticking with the packaged kernel that comes with whatever ROM that you are going to flash, run it for a few days, after that if u still feel the need for something more, go with a custom kernel! Ktoonsez makes an excellent kernel, one for tw, and one for aosp, u just have to pick the right one according to which ROM you're running!! Good luck...
Click to expand...
Click to collapse
I did try flashing AOKP with TouchWiz, and it gives me an error that it cant flash.
Is the kernel that Ktoonsez all part of the ROM and just one file ?
Ultimately, I would like to flash AOKP, but my Galaxy S3 wont allow it...

Shane24 said:
I did try flashing AOKP with TouchWiz, and it gives me an error that it cant flash.
Is the kernel that Ktoonsez all part of the ROM and just one file ?
Ultimately, I would like to flash AOKP, but my Galaxy S3 wont allow it...
Click to expand...
Click to collapse
What?
What DMF1977 was saying is just flash the ROM you desire to have on your device and just run the kernel that comes with the ROM. After running the ROM you chose for awhile, if you feel the need to flash a new kernel then and only then flash the correct version of Ktoonsez kernel. And its not surprising that if you tried to flash anything AOKP related with TW you got an error.
Just flash an AOKP ROM and Dont worry about flashing an additional kernel.
Goodluck
Sent from my SAMSUNG-SGH-I747 using xda app-developers app