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Root How does one flash a kernel?

Thefoodman52

Android Expert
Dec 1, 2009
2,311
329
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?? :thinking:

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.... :(
 
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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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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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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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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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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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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istockphoto3433862thefl.jpg



EDIT - just kidding....
 
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