Develop Bugs

[Kernel][How to] Flashing a kernel

Hi all,
I am here to share another [How to] on flashing a kernel. There are quite a number of kernel available in our forum such as Cow Kernel, stock kernel, etc. They have different capability such as UV, OC and equipped with different governors too.
This tutorial will teach u how to flash a kernel easily.
HOW?
To flash a new kernel,
via adb shell
1) Download the kernel
It is as easy as just copy the boot.img from the ROM equipped with kernel u want.
2) Download the Wifi module dhd.ko
Copy dhd.ko from the ROM with kernel u want, it is under /system/etc/wifi
(without getting this, ur WIFI will not work)
3) Copy both files into your phone by using adb shell or simply copy them over from ur PC.
Code:
adb push boot.img /sdcard/download/
adb push dhd.ko /sdcard/download/
4) Flash to your phone
Code:
adb shell
su
dd if=/sdcard/download/boot.img of=/dev/block/mmcblk0p8
5) Copy dhd.ko to /system/etc/wifi/ via Root Explorer.
Reboot. DONE~
via CWM
1) Download the kernel u want from attachments.
2) Boot into recovery mode by pressing power+select+volume up bottons
3) Flash the zip and then Reboot
Just a personal experience, the XXLM8 and DXLM3 kernel give us better visual performance and make ur Temple Run smoother.
Same advice, do at ur own risk. Remember to do a nandroid backup beforehand.

Thanks bro...

How about battery life? Which one is better, Cow's or XXLM8 kernel?

in my opinion Cow kernel is the most performant, best benchmark scores and best ram management. XXLM8 has a better battery life and a good durability.
I personally prefer the Cow one couse of the performance.

In my opinion cow rom are best with benchmark point which is very high but not in real app performance..
I tested temple run on both rom, and xxlm8 just slightly faster than cow
And also battery life is longer with xxlm8..
Sent from my GT-I8150 using Tapatalk 2

Can i flash the kernel on cwm? Im using black note hybrid 2..
Thanks
Sent from my GT-I8150 using Tapatalk 2

Hyp3rh4ck said:
in my opinion Cow kernel is the most performant, best benchmark scores and best ram management. XXLM8 has a better battery life and a good durability.
I personally prefer the Cow one couse of the performance.
Click to expand...
Click to collapse
terifish said:
In my opinion cow rom are best with benchmark point which is very high but not in real app performance..
I tested temple run on both rom, and xxlm8 just slightly faster than cow
And also battery life is longer with xxlm8..
Sent from my GT-I8150 using Tapatalk 2
Click to expand...
Click to collapse
Terifish is correct. Cow kernel has better benchmark score but that is not true in real application. Overclocking doesn't improve the performance for gaming because that is actually related to GPU and ram management.
XXLM8 has been proven to have better gaming performance. U can personally experience it when playing Temple Run.
acelim23 said:
How about battery life? Which one is better, Cow's or XXLM8 kernel?
Click to expand...
Click to collapse
Theoretically, cow's kernel should give better battery life as it is undervolted.
utingbato said:
Can i flash the kernel on cwm? Im using black note hybrid 2..
Thanks
Sent from my GT-I8150 using Tapatalk 2
Click to expand...
Click to collapse
U need to use adb shell for flashing it. Not sure whether a flashable zip can be created for this. Any expert can help on this?

yewsiong said:
Terifish is correct. Cow kernel has better benchmark score but that is not true in real application. Overclocking doesn't improve the performance for gaming because that is actually related to GPU and ram management.
XXLM8 has been proven to have better gaming performance. U can personally experience it when playing Temple Run.
Click to expand...
Click to collapse
I 2nd That..
Theoretically, cow's kernel should give better battery life as it is undervolted.
Click to expand...
Click to collapse
And this one too cuz when I using Cow rom a while ago , I put on standby it consume 1% for 4 hours , under normal use (wifi all day long, some call, sms, email , gaming ) still can hold more than 50 hours . . but change to others roms due to FC essue..

Can I put the XXLM8 kernel in the gingerbread miui?
Sent from my GT-I8150 using Tapatalk 2

sparta20 said:
Can I put the XXLM8 kernel in the gingerbread miui?
Sent from my GT-I8150 using Tapatalk 2
Click to expand...
Click to collapse
Yes, u can. Try to do a backup 1st。
Sent from my GT-I8150 using XDA

sparta20 said:
Can I put the XXLM8 kernel in the gingerbread miui?
Sent from my GT-I8150 using Tapatalk 2
Click to expand...
Click to collapse
of course... i already did it... and it runs smoother!
Sent from my GT-I8150 using xda premium

nunogilberto said:
of course... i already did it... and it runs smoother!
Sent from my GT-I8150 using xda premium
Click to expand...
Click to collapse
LOL~ Seems like XXLM8 is really a good kernel for our SGW at this moment.

yewsiong said:
LOL~ Seems like XXLM8 is really a good kernel for our SGW at this moment.
Click to expand...
Click to collapse
really agree with you..
i'm very satisfied with my SGW battery performance with XXLM8

Which governor should be adjusted to save power and still have a good performance on XXLM8?

1haumann1 said:
Which governor should be adjusted to save power on XXLM8?
Click to expand...
Click to collapse
I suggest using CPU profile scheduler such as SetCPU. Use ondemand for normal usage and set powersave for screen off.

utingbato said:
Can i flash the kernel on cwm? Im using black note hybrid 2..
Thanks
Sent from my GT-I8150 using Tapatalk 2
Click to expand...
Click to collapse
I wonder that too... I'm not familiar with adb yet... CWM rules when it comes down to being "easy", hence safe, if you know what I mean...
I'm really excited to flash this kernel now...
I noticed that inside the nandroid backup folder there is a "boot.img", so, why can't we just exchange it by the one from XXLM8 and just restore it to have it flashed? I didn't do it yet because there is no turning back after messing with the boot.img...
I read this thread, but I'm still not confident enough to do it...
Does anyone know if my theory stands?

a.fontenele said:
I wonder that too... I'm not familiar with adb yet... CWM rules when it comes down to being "easy", hence safe, if you know what I mean...
I'm really excited to flash this kernel now...
I noticed that inside the nandroid backup folder there is a "boot.img", so, why can't we just exchange it by the one from XXLM8 and just restore it to have it flashed? I didn't do it yet because there is no turning back after messing with the boot.img...
I read this thread, but I'm still not confident enough to do it...
Does anyone know if my theory stands?
Click to expand...
Click to collapse
No. U can't do that. If u replace the boot.img in a ROM zip, there will be md5 checksum mismatch error. U need to resign the zip again.

okay, if you want to try different kernels without using adb, attached are update zip for Cow kernel and XXLM8 kernel...
just put it on your sdcard, and install it through CWM recovery...
enjoy...

Hello to all, i want to flash the xxlm8 zip using cwm. But as mentioned do i still need to flash the wifi module? or is it already included in the zip file? not comfortable with adb as i might mess things up.
Sent from my GT-I8150 using XDA

rayleynes said:
Hello to all, i want to flash the xxlm8 zip using cwm. But as mentioned do i still need to flash the wifi module? or is it already included in the zip file? not comfortable with adb as i might mess things up.
Sent from my GT-I8150 using XDA
Click to expand...
Click to collapse
the specific wifi module for each kernel is already included in each update zip file... i tested both of the zip files, and i can switch kernel whenever i want...
Sent from my GT-I8150 using xda premium

[Q] Is there any kernel compatible with arco's CM9?

the title says it all, is there any kernel that possible/compatible with arco's CM9 alpha 2/3?
sorry for my bad english

hotheabilly said:
the title says it all, is there any kernel that possible/compatible with arco's CM9 alpha 2/3?
sorry for my bad english
Click to expand...
Click to collapse
arco68's kernel is the best among all I dun think there is one
Sent from my GT-I8150 using Tapatalk 2

can arco's cm9 kernel be used with other roms (i.e. stock gb rom or rio's black notes)?
i know it sounds stupid but i just want to clarify...

andynroid said:
arco68's kernel is the best among all I dun think there is one
Sent from my GT-I8150 using Tapatalk 2
Click to expand...
Click to collapse
yeah I wondering if there's any kernel developer in our phone like cow or arco did
mike_kenji said:
can arco's cm9 kernel be used with other roms (i.e. stock gb rom or rio's black notes)?
i know it sounds stupid but i just want to clarify...
Click to expand...
Click to collapse
yes arco's kernel have 364 mb of ram and providing smooth and liquid in gaming so if possible to port to gb it will awesome i think

CWG (Cow) kernel is also based on arco68's kernel...the very latest is Bionic V2.
When it comes to gaming Alpha3 is the best
Sent from my GT-I8150 using Tapatalk 2

[Q] Can anyone suggest the best kernel for Xperia S with CM9.1?

Just flashed the CM9.1 rom of FXP and I want to know what is the best stable ,fast and smooth kernel for my device with this Rom.
Thank you :good: :good:

davidbar93 said:
Just flashed the CM9.1 rom of FXP and I want to know what is the best stable ,fast and smooth kernel for my device with this Rom.
Thank you :good: :good:
Click to expand...
Click to collapse
I'd say the one that came with it, stick with that one :good:

The other kernels are not stables. Stay with the "stock" CM kernel.
This is the best.
Xperia S - Tapatalk

And what about Nova Kernel?

davidbar93 said:
And what about Nova Kernel?
Click to expand...
Click to collapse
The Nova kernel is for JB roms. Cm9.1 is ICS. I tried the first version of the kernel when released as it supposedly supported CM9 but didn't boot.
Stock kernel is great. I got 3hrs of screen on time streaming hd video from YouTube yesterday.
Sent from my Xperia S using xda app-developers app

[Q] kernel for latest CM10.1 nightly with OC/UV??

what's a good kernel to flash with latest CM10.1 nightly that has overclock and maybe undervolting??

euklid said:
what's a good kernel to flash with latest CM10.1 nightly that has overclock and maybe undervolting??
Click to expand...
Click to collapse
You have to wait until the OC kernels are updated to run with the new builds.

euklid said:
what's a good kernel to flash with latest CM10.1 nightly that has overclock and maybe undervolting??
Click to expand...
Click to collapse
i would choose between the asdk kernel and elbermu kernel

Cerux is about the only glitch and drama free kernel nowadays.
Sent from my cell phone telephone....

[L7][KERNEL][GPL][CM10.1] Gandalf OC Kernel V2.0

Flashing intructions:
- Copy to sdcard
- reboot to recovery
- make nand backup
- wipe cache + dalvik cache
- flash kernel
- reboot
Features:
-OC to 1.275Ghz (more stable)(warning, 1.275 is dangerous!!!)
-GPU OC
-smartassv2
-lulzactive
-sio
-swap
-zRam & zCache
-a lot of optimizations
-comptible with the last cm10.1 builds
Credits
tudorsirb
pinkflozd
TeamHackLG
cyanogenmod
Sources: comming soon

Great!! "more comming soon"? What´s yours planns for the future?

Snowers96 said:
Great!! "more comming soon"? What´s yours planns for the future?
Click to expand...
Click to collapse
frandom, swap, and more things I can find

it's work in my 4.2.2 , is a great work, much thanks for you job

Try 1.4 Ghz

Please try to make Youtube HD working on this kernel, I tried it on CM10 original and gandalf and none work. It would be so good if you could it make for 10.1

would you make compatible with p708?

how do you overclock GPU?
Sent from my LG-P700 using Tapatalk 4 Beta

anwarkhan25 said:
how do you overclock GPU?
Sent from my LG-P700 using Tapatalk 4 Beta
Click to expand...
Click to collapse
did it the wrong way, removed it from the first post, it's more complicated in 3.4 kernel
"It appears we were not OC-in Gpu but AXI wich is a different thing. On 3.0 kernel gpu oc was in board.u0.display. On 3.4 we need to dig more for it"
got this message from tudorsirb

bart452 said:
did it the wrong way, removed it from the first post, it's more complicated in 3.4 kernel
"It appears we were not OC-in Gpu but AXI wich is a different thing. On 3.0 kernel gpu oc was in board.u0.display. On 3.4 we need to dig more for it"
got this message from tudorsirb
Click to expand...
Click to collapse
so basically its not working for now?
Sent from my LG-P700 using Tapatalk 4 Beta

anwarkhan25 said:
so basically its not working for now?
Sent from my LG-P700 using Tapatalk 4 Beta
Click to expand...
Click to collapse
GPU overclock is not working right now, have to wait till someone finds out how
Sent from my Nexus 7 using XDA Premium HD app

Whata about Youtube HD??

Works fine For me.
Enviado desde mi LG-P700 usando Tapatalk 2

Prometeo88 said:
Works fine For me.
Enviado desde mi LG-P700 usando Tapatalk 2
Click to expand...
Click to collapse
Yeah it works but there is no GPU overclock.

we have this very nice kernel to use it with what rom?

steliosk said:
we have this very nice kernel to use it with what rom?
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?t=2339781
With this great CM10.1

lilatibi said:
http://forum.xda-developers.com/showthread.php?t=2339781
With this great CM10.1
Click to expand...
Click to collapse
Yes but there is on beta 1 only with many problems, is that true?

steliosk said:
Yes but there is on beta 1 only with many problems, is that true?
Click to expand...
Click to collapse
I use it from yesterday mourning, and it's very good. Fast and smooth. Only problem is the video recording, and bluetooth doesn't work.

lilatibi said:
I use it from yesterday mourning, and it's very good. Fast and smooth. Only problem is the video recording, and bluetooth doesn't work.
Click to expand...
Click to collapse
that is the reason I am waiting for beta 2....

this bricks your phone on latest cm10.1 don't flash it until @bart452 updates ramdisk and kernel.
Cheers!
Tudor