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Old September 6th, 2010, 10:07 PM   #1 (permalink)
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Default How does one flash a kernel?

I'm going on and trying my best to root here.... but I just can NOT for the life of me, after about... damn... three hours of searching, find anything about how to flash or install (whatever you would call it) a kernal. Through the XDA guide, here. Thing is, I THINK this guide is for basically rooting your phone and putting a stock 2.2 rom on it, and...from what I understand... it's the uhh.... nand unlocked version or something??

I know from reading that means it's full root and allows me to do essentially everything I want to... without altering, ruining/breaking any major phone functions (WiMax radio, FM tuner, GPS, WiFi, etc.). However, it does NOT unlock the framerate cap that I'm trying to escape. I've found a kernal here that I think is what I need to do what I want; escape the FPS cap without fudging up anything else on the phone.

My question is as follows.... through the whole video and text guide of rooting stock 2.2 on my phone courtesy of XDA, no where does it mention any way or how to flash/install a kernal. I can't find a guide anywhere on how to do so either, there are no posts here that I can find, from an hour of searching and desperately reading, for anything and everything related to kernals or roms for the Evo or any phone.

Can someone instruct me, please, on how to flash a kernal? I can't root tonight, as has become apparent to me because I've spent about 9 hours today trying to figure out how to do anything, primarilybecause nowhere I go to seems to give me any help. I have full on intentions to get my root on tomorrow, I feel I've got about 60% of it understood of what I'm doing, but I just can NOT find how to flash a *sparkling jesus* kernal anywhere!!!

Any help is appreciated, links to a guide, a PM on how to, an e-mail, anything!

I'll continue to bump this until I can either:
a) find the information on my own
b) someone aids me in locating said information
c) someone helps me out via instructions

I think I'm the only one who thought rooting was gonna be a one day thing....

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Old September 6th, 2010, 10:23 PM   #2 (permalink)
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I already answer this for you on a different thread. The process is a simple as flashing a ROM, put the .zip on ur sdcard, go into recovery,wipe cache,dalvik-cache, install .zip from sdcard, reboot phone and ur done.
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Old September 6th, 2010, 10:30 PM   #3 (permalink)
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Alright, my bad. I see what you meant in the other thread now... was just re-reading over it again.... god I feel stupid... I'm just frustrated and not thinking straight as I should...

Going off the guide from XDA, I've got everything downloaded and I'm in the process of downgrading to 2.1 as I type now. After I get the stock 2.2 rom running on there, after it's all done, I'm rooted, etc., which step should I go back to to install the kernal and do all this?

Also, is there literally an option labeled as 'wipe cache', as well as install .zip from sdcard and etc. once in recovery mode?
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Old September 6th, 2010, 10:42 PM   #4 (permalink)
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when you're in the white hboot screen after you press vol down and power, choose RECOVERY > WIPE > and you'll see the options to WIPE CACHE and WIPE DAVLIK-CACHE. Then click on RETURN and install ZIP FROM SDCARD and REBOOT. pretty much what exBuster said.
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Old September 6th, 2010, 11:31 PM   #5 (permalink)
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Okay, well this is interesting, I'm at the point in the unrEvoked root where it's stuck at "Waiting for root". Wtf did I do wrong??


Need help, stuck here, I'm about 80% done with the whole root process, I just need to get past this!!
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Old September 6th, 2010, 11:56 PM   #6 (permalink)
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It seems to not want to go into recovery mode after the unrevoked program does its think.... what ****** up??
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Old September 7th, 2010, 12:44 AM   #7 (permalink)
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Thank you for all the help exBBuser, sorry for making you mad at me... =(

However, OH MY GAWD glad I rooted! everything is baby butt smooth now! Thanks to the kernel change. I thoroughly will enjoy this, and thank you eternally.
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Old September 7th, 2010, 06:44 AM   #8 (permalink)
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Originally Posted by Thefoodman52 View Post
Thank you for all the help exBBuser, sorry for making you mad at me... =(

However, OH MY GAWD glad I rooted! everything is baby butt smooth now! Thanks to the kernel change. I thoroughly will enjoy this, and thank you eternally.
Yourwelcome. Good to hear that u r finally rooted.
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Old September 10th, 2010, 08:37 PM   #9 (permalink)
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Originally Posted by tracerit View Post
when you're in the white hboot screen after you press vol down and power, choose RECOVERY > WIPE > and you'll see the options to WIPE CACHE and WIPE DAVLIK-CACHE. Then click on RETURN and install ZIP FROM SDCARD and REBOOT. pretty much what exBuster said.
what exactly does that wipe? is that a full wipe? im scared
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Old September 10th, 2010, 08:56 PM   #10 (permalink)
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what exactly does that wipe? is that a full wipe? im scared
No, its not a full wipe.
But you have to wipe the cache and the dalvik before flashing any kernel.

I dont know exactly why though. haha
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Old September 11th, 2010, 09:56 AM   #11 (permalink)
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ok so i deleted the cache (both of them) and flashed this kernal [KERNEL] [2.6.32.15] [HAVS][BFS][BFQ][FPS][OC][UV] KiNgxKernel #8/#9 "Still Alive" - xda-developers. now mu phone is lagging and slow to respond, also takes forever to boot up and its just overall a turtle. i did do a nandroid back up, do i need to run that or can i just delete the kernal?

edit: so i restored my back up, booted up in 2 mins and is smooth as silk. are there other kernals to try or anyone know of 1 thats a sure thing?
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Old September 11th, 2010, 10:26 AM   #12 (permalink)
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ok so i deleted the cache (both of them) and flashed this kernal [KERNEL] [2.6.32.15] [HAVS][BFS][BFQ][FPS][OC][UV] KiNgxKernel #8/#9 "Still Alive" - xda-developers. now mu phone is lagging and slow to respond, also takes forever to boot up and its just overall a turtle. i did do a nandroid back up, do i need to run that or can i just delete the kernal?

edit: so i restored my back up, booted up in 2 mins and is smooth as silk. are there other kernals to try or anyone know of 1 thats a sure thing?
That kernel didn't sit well with my stock ROM either. Not sure why. Others have no issue with it. You can try the netarchy series of kernels. See my sig. I would go with a CFS kernel instead of a BFS one.

BTW, you probably could have gotten away with just flashing a new kernel on top of the Kingx one to fix the lag. Note that on Netarchy's OP, he gives you a download of the stock kernel in case you ever need it.
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Old September 11th, 2010, 12:46 PM   #13 (permalink)
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thanks, so i checked that link you got and had no idea wtf i was looking at lol
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Old September 11th, 2010, 12:53 PM   #14 (permalink)
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thanks, so i checked that link you got and had no idea wtf i was looking at lol
This is what you want.

Revision 4.1.8-cfs edition
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Old September 11th, 2010, 12:54 PM   #15 (permalink)
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cool thanks

54 fps, benchmark is now down to 1220 and lost 8% battery in 5 minutes. is this what i really want?
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Old October 11th, 2010, 04:43 PM   #16 (permalink)
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Thanks, LOTS easier than I thought. I'm getting more comfortable with the going into recovery, etc.

Just flashed my first kernel to my new rom

Next up.....themes!
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Old October 11th, 2010, 05:13 PM   #17 (permalink)
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Thanks, LOTS easier than I thought. I'm getting more comfortable with the going into recovery, etc.

Just flashed my first kernel to my new rom

Next up.....themes!
Themes are pretty easy to flash to,followed the same steps as flashing a Kernel,make sure you do a nand backup,once you apply the theme theres no going back.
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Old October 11th, 2010, 05:17 PM   #18 (permalink)
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One important caveat: people have been reporting less then complete wipes of the caches when using clockworkmod. To switch temporarily to Amon RA, download it to the root of your SD card. Then open ROM Manager and hit "Flash Alternate Recovery" (select Amon Ra). Reboot into recovery, wipe the caches, install the kernel. Then, if you like, just reboot and go to Rom Manager and switch back to Clockworkmod.

I didn't believe there was an issue until I tried it myself. It cleared up a lot of stuttering on the audio and when unlocking the phone.
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Old November 30th, 2010, 02:36 PM   #19 (permalink)
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I am trying to do the flash of this kernel
I am in recovery mode.
I went to Wipe
I did the wipe of the dalvik-cache
Returned.
When I click on flash zip from sdcard the file isn't there.

It is saved on my SD card though.
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Old November 30th, 2010, 02:40 PM   #20 (permalink)
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Are you sure it is saved as a .zip file?
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Old December 20th, 2010, 08:39 PM   #21 (permalink)
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Quote:
Originally Posted by surfologist87 View Post
No, its not a full wipe.
But you have to wipe the cache and the dalvik before flashing any kernel.

I dont know exactly why though. haha
I have been flashing kernels for a little while and ONLY wiped Dalvik cache and not noticed any problems. Is it necessary to wipe the other cache? I hadn't been doing this as I was thinking the other cache contained my settings and would be like a full wipe which i guess it isn't?
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Old May 20th, 2011, 11:24 AM   #22 (permalink)
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Originally Posted by exBBuser View Post
I already answer this for you on a different thread. The process is a simple as flashing a ROM, put the .zip on ur sdcard, go into recovery,wipe cache,dalvik-cache, install .zip from sdcard, reboot phone and ur done.
I just did exactly that. Wiped cache and dalvik-cache, installed the .zip for kernel 2.6.37.6 and now my phone won't boot. stuck on the htc EVO 4G screen with the white background... wat do?!
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Old May 20th, 2011, 11:39 AM   #23 (permalink)
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I just did exactly that. Wiped cache and dalvik-cache, installed the .zip for kernel 2.6.37.6 and now my phone won't boot. stuck on the htc EVO 4G screen with the white background... wat do?!

What rom and what kernel exactly?
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Old May 20th, 2011, 06:32 PM   #24 (permalink)
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EDIT - just kidding....
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Old May 20th, 2011, 09:31 PM   #25 (permalink)
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^LMAO. Just made my night.
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Old October 23rd, 2011, 01:39 AM   #26 (permalink)
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So I take it, you can flash a root kernel if you already have installed a modified CF-root kernel?

It's just that here is written:
Quote:
You can also root your device by simply flashing a root kernel. If you want to do this then stop reading this guide and follow the root guide for the kernel you wish to use.
And I can't find a guide for my kernel (XWKDD-CL16...), SGS2.
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Old October 23rd, 2011, 01:56 AM   #27 (permalink)
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So I take it, you can flash a root kernel if you already have installed a modified CF-root kernel?

It's just that here is written:


And I can't find a guide for my kernel (XWKDD-CL16...), SGS2.
this is the evo rooting forum. you might want to create a thread over in the samsung galaxy s2 forums.
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Old December 20th, 2011, 04:02 AM   #28 (permalink)
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hey guys.. am having some questions.. Can you guys please clarify..

1. what is the meaning of CF-root kernels.
2. can I change the kernels without rooting it. As i having SG2 and in its rooting procedure they told to flash insecure kernels before roooting...
3.What are the things first I have to do after rooting

a. take the back up of ROM.
b. search for good ROMs.
c. ????????????????????
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Old December 20th, 2011, 09:51 AM   #29 (permalink)
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Originally Posted by shashankdombe View Post
hey guys.. am having some questions.. Can you guys please clarify..

1. what is the meaning of CF-root kernels.
2. can I change the kernels without rooting it. As i having SG2 and in its rooting procedure they told to flash insecure kernels before roooting...
3.What are the things first I have to do after rooting

a. take the back up of ROM.
b. search for good ROMs.
c. ????????????????????
hello and welcome to the forums!!!!!!!!!!
what carrier are you on?
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Old September 2nd, 2012, 08:14 AM   #30 (permalink)
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Okay seems like you know what your talking about. I'm not new to rooting but all I have done is flashed roms so far and I've always wondered how flash a kernel. I'm on a galaxy s2 skyrocket running cm9. So do I just download the kernel(.zip) and flash it via cwm? Is it that simple? And I've read you have to whipe cache and dalvik before. Let me know please and thank you.
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Old September 2nd, 2012, 08:31 AM   #31 (permalink)
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Okay seems like you know what your talking about. I'm not new to rooting but all I have done is flashed roms so far and I've always wondered how flash a kernel. I'm on a galaxy s2 skyrocket running cm9. So do I just download the kernel(.zip) and flash it via cwm? Is it that simple? And I've read you have to whipe cache and dalvik before. Let me know please and thank you.
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If its anything similar to the Evo 4g (the forum you are in now), then yes, download kernel, wipe caceh and dalvik cache, then flash. But post that question over there just to be sure.
Make sure kernel is made for cm9 (aosp kernel for aosp rom....sense kernel for sense rom)
Happy flashing!
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