Help with kernels - Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot

I don't get how to flash kernels. Than if I do flash a kernel how would I go back to the one I am now. Please help I want to flash kernels
Sent from my SPH-L720 using xda app-developers app

danzelcool said:
I don't get how to flash kernels. Than if I do flash a kernel how would I go back to the one I am now. Please help I want to flash kernels
Sent from my SPH-L720 using xda app-developers app
Click to expand...
Click to collapse
Well to start. You can read the stickies, the how tos, and watch some of the videos.
Then there is also that g o o g l e thingy.
That would really help. It will probably keep you from turning your device into a shiny paperweight.
Sent from my SPH-L720 using XDA Premium 4 mobile app

I've not had good luck with custom or source kernels. I use oudhs recovery and do a backup within recovery before flashing a kernel. The only combination my phone behaves with is stock kernel. I don't know why nor do I have any speculations. My phone just doesn't work right with custom or source built kernels. The phone either heats up fast or the Google keyboard I use starts acting flaky, so that's why I stay stock rooted hotspot mod with custom recovery. This phone is a totally different beast than my s2.

oscarthegrouch said:
I've not had good luck with custom or source kernels. I use oudhs recovery and do a backup within recovery before flashing a kernel. The only combination my phone behaves with is stock kernel. I don't know why nor do I have any speculations. My phone just doesn't work right with custom or source built kernels. The phone either heats up fast or the Google keyboard I use starts acting flaky, so that's why I stay stock rooted hotspot mod with custom recovery. This phone is a totally different beast than my s2.
Click to expand...
Click to collapse
I agree. S4 acts way different than my S3 as far as flashing things go. Seems the S4 is way more sensitive and does some wonky stuff sometimes.

danzelcool said:
I don't get how to flash kernels. Than if I do flash a kernel how would I go back to the one I am now. Please help I want to flash kernels
Sent from my SPH-L720 using xda app-developers app
Click to expand...
Click to collapse
First, download a custom kernel such as Chronic or KTweaker, then nandroid, wipe caches, flash the kernel zip, fix permissions, and reboot. ROMs come with their own kernels; to get your original kernel back, just reflash your ROM.
Sent from my Carbonized Chronic SPH-L720
---------- Post added at 02:56 AM ---------- Previous post was at 02:36 AM ----------
oscarthegrouch said:
I've not had good luck with custom or source kernels. I use oudhs recovery and do a backup within recovery before flashing a kernel. The only combination my phone behaves with is stock kernel. I don't know why nor do I have any speculations. My phone just doesn't work right with custom or source built kernels. The phone either heats up fast or the Google keyboard I use starts acting flaky, so that's why I stay stock rooted hotspot mod with custom recovery. This phone is a totally different beast than my s2.
Click to expand...
Click to collapse
What ROM/kernel combinations do you use? The only buggy kernel I've used is KTweaker. On Carbon 4.3, it reboots whenever my phone attempts to stream video. It may help to change your governor, especially if the kernel's default is Interactive.
Sent from my Carbonized Chronic SPH-L720

Related

Do i have to use ODIN all the time when changing roms?

i have come from Xperia X10i. where i could flash roms in minutes with Xrecovery thx to J&Z & Trip for his wonderful roms without the need of connecting my phone to a pc.
I am a bit confused now. i have made up my mind about custom roms, Villain and Lightening. i want to try both.
I dont want to damage my SGS2 as it looks very very delicate. My questions is do i have to use ODIN all the time for changing and testing roms? or is there an easier way. The reason for this question is as:
My X10 usb port got damaged due to flashing different radios/basebands for different roms and i decided to get SGS2.
Odin is probably the easiest way to flash a rom but most custom ROMs are flashable with clockwork recovery. You first have to flash a custom kernel with odin to get clockwork though.
Sent from my GT-I9000 using XDA Premium App
zabihjan said:
i have come from Xperia X10i. where i could flash roms in minutes with Xrecovery thx to J&Z & Trip for his wonderful roms without the need of connecting my phone to a pc.
I am a bit confused now. i have made up my mind about custom roms, Villain and Lightening. i want to try both.
I dont want to damage my SGS2 as it looks very very delicate. My questions is do i have to use ODIN all the time for changing and testing roms? or is there an easier way. The reason for this question is as:
My X10 usb port got damaged due to flashing different radios/basebands for different roms and i decided to get SGS2.
Click to expand...
Click to collapse
Depends on the rom dev, if they make the rom flashable thru cwm recovery (cognition,batista etc) or odin like litening, villain.
Honestly both are pretty simple and quick. I have all my user apps, touchwiz config backed up thru titanium backup. So it only takes 5 to 10 mts to flash a new rom and restoring apps.
And don't worry you are not going to brick a samsung phone, odin will always rescue you if you can get into download mode
Sent from my GT-I9100 using XDA Premium App
@hansonator
@kirdroid
thank you both.
moderators pls close my thread.
resolved.
do you know if cmw4 is compatible with rom manager? i know that chainfire's modified cmw4 isnt.
p00kienrayray said:
do you know if cmw4 is compatible with rom manager? i know that chainfire's modified cmw4 isnt.
Click to expand...
Click to collapse
Answer is still NO .
Or at least no posts to say it is .
jje
I tested it out and it does.
Sent from my GT-I9100 using Tapatalk
hansonator said:
Odin is probably the easiest way to flash a rom but most custom ROMs are flashable with clockwork recovery. You first have to flash a custom kernel with odin to get clockwork though.
Sent from my GT-I9000 using XDA Premium App
Click to expand...
Click to collapse
I used clockwork mod all the time wigth my HD2 but i didn't like the CWM boot up screen that appeared for a few seconds is that also on the GS2 or not seen as this is a native Android phone?
jonny68 said:
I used clockwork mod all the time wigth my HD2 but i didn't like the CWM boot up screen that appeared for a few seconds is that also on the GS2 or not seen as this is a native Android phone?
Click to expand...
Click to collapse
There is no Cwm boot animation.
pulser_g2 said:
There is no Cwm boot animation.
Click to expand...
Click to collapse
that's good, if i was to flash your ROM for example do i need to install CWM on my GS2 first?

Kernel repacking?

my old phone was the HTC One X and I remember having to repack the kernel for the rom I was using
1) is it the same here with the Nexus 4 after rooting/unlocking? any automatic repackers out there?
Also,
2) do I still need to "fastboot flash boot boot.img" everytime I flash a new rom
PS pretty excited about getting back into the android scene. my nexus 4 is coming in tomorrow.
From what I know I never had to repack any kernel on my nexus phones. All you need to do is run the unlock command once through fast boot and you can flash whatever you like. This phone is made so you can run what you like without jumping through hoops like the branded phones.
Sent from my Nexus 4 using xda app-developers app
can anyone second that?
once the bootloader is unlocked, and have a custom recovery installed, you can flash any nexus 4 kernel you want(compatible kernel). you dont have to repack anything.
Thanks simms22
is flashing the boot.img required after flashing a rom?
misterpho06 said:
Thanks simms22
is flashing the boot.img required after flashing a rom?
Click to expand...
Click to collapse
if thats the kernel that you are flashing. theres only one that i can think of that requires flashing the boot.img, all the others are flashable via the recovery. but, to answer the question, after every rom flash, youll have to reflash your custom kernel, as the rom will overwrite the kernel that you are running.
misterpho06 said:
Thanks simms22
is flashing the boot.img required after flashing a rom?
Click to expand...
Click to collapse
Coming from a One X myself, I can confirm that you don't need to go hunting for a repacked ramdisk for use with your kernel of choice.
As the Nexus is fully unlocked, (not some half-arsed partial unlock that was the case with the One X), all the kernels can be flashed directly within recovery
Sent from my Nexus 4 using xda premium
THANK YOU for your responses guys.
any opinion on the best rom/kernel available right now for the nexus4?
I would really like the features of AOKP and cyanogenmod but hates little bugs.
Probably might stick with stock rom but maybe a franco kernel for now??
rasbean jelly rom, trinity kernel. stock rom is good too. but theres no best, theres whats best for your needs. experiment with a few different roms/kernels, find what you and your device likes best

ATT S4 kernel suggestion

I have the ATT 16G S4 variant. The device is rooted, sim unlocked, and has a twrp recovery. Two questions,
1. I have made a back up in twrp for boot, system, and data. But I do not see an option to back up the stock kernel. So how do I make a back up for my stock kernel? Or is the stock kernel already backed up as part of system?
Now I want to try running the Omega custom rom on it. I know I have to also flash a tw based locki patched kernel for my att variant since the bootloader is locked.
2 What is the best kernel for running Omega on ATT?
Thanks!
Your kernel is backed up with the boot when performing a nandroid. But "best"of threads are against xda rules man. Gotta try for yourself
Sent from my SAMSUNG-SGH-I337 using Tapatalk 2
Kole_Ackerson said:
Your kernel is backed up with the boot when performing a nandroid. But "best"of threads are against xda rules man. Gotta try for yourself
Sent from my SAMSUNG-SGH-I337 using Tapatalk 2
Click to expand...
Click to collapse
Right, I meant, what are some of the tw based kernels which will run smoothly with Omega rom on my att device?
Not sure. There is only two kernels for tw and im pretty sure it says in in the link below you have to use a specific one
http://forum.xda-developers.com/showthread.php?p=41834056
Edit. It says must use loki kernel. I skimmed over the faux kernel thread and didnt see anything about it being loki'd
So use KT kernel
Sent from my SAMSUNG-SGH-I337 using Tapatalk 2
Kole_Ackerson said:
Not sure. There is only two kernels for tw and im pretty sure it says in in the link below you have to use a specific one
http://forum.xda-developers.com/showthread.php?p=41834056
Edit. It says must use loki kernel. I skimmed over the faux kernel thread and didnt see anything about it being loki'd
So use KT kernel
Sent from my SAMSUNG-SGH-I337 using Tapatalk 2
Click to expand...
Click to collapse
I read that Adam and faux both work on ATT as well. I am on KT right now. I'll give the other two a try later. To see which one I like best.
Thanks!
mf1tym said:
I read that Adam and faux both work on ATT as well. I am on KT right now. I'll give the other two a try later. To see which one I like best.
Thanks!
Click to expand...
Click to collapse
All of them work perfect, each phone and what you run on your phone affects how the kernel will work for you...try each one, give 24hrs per kernel to see if battery results and such are for you.
Good luck
"I'm on a roll today"
TheAxman said:
All of them work perfect, each phone and what you run on your phone affects how the kernel will work for you...try each one, give 24hrs per kernel to see if battery results and such are for you.
Good luck
"I'm on a roll today"
Click to expand...
Click to collapse
Thanks! I have been on KT for the past couple of days. Everything seems fine so far. I will try Adam and Faux in the weeks to come. I did notice the phone heats up pretty quickly after using the swipe to capture screenshot function. Is that normal?
Where can I find the Adam kernel download for AT&T S4?

[Q] Flashing from AOSP to TW ROMs

I have recently been switching my ROMs up alot and have been having issues going from AOSP back to TW through regular flashing of the ROMs.
I generally don't have any problems switching from TW to AOSP, but whenever I flash the other way I am just left with a black screen after the Sammy logo.
To effectively get TW back on my device I have to Odin back to stock and then Odin flash a recovery and start from scratch.
I was curious as to the rest of the communities experience with this as I may just be missing a crucial step when switching between the two systems.
I usually format the /system and do a factory reset and wipe both caches
Does anyone else have a problem like this?
sounds like a kernel issue since your wiping system and data and cache? so i wiould flash another tw kernel when going back to tw if it doesnt boot, i use the kt kernel.
jaaybs said:
I have recently been switching my ROMs up alot and have been having issues going from AOSP back to TW through regular flashing of the ROMs.
I generally don't have any problems switching from TW to AOSP, but whenever I flash the other way I am just left with a black screen after the Sammy logo.
To effectively get TW back on my device I have to Odin back to stock and then Odin flash a recovery and start from scratch.
I was curious as to the rest of the communities experience with this as I may just be missing a crucial step when switching between the two systems.
I usually format the /system and do a factory reset and wipe both caches
Does anyone else have a problem like this?
Click to expand...
Click to collapse
I have a stock rooted nandroid that I restore when I get bored with AOSP, and I haven't had any issues.
Sent from my SPH-L720 using xda premium
devoureddreams said:
sounds like a kernel issue since your wiping system and data and cache? so i wiould flash another tw kernel when going back to tw if it doesnt boot, i use the kt kernel.
Click to expand...
Click to collapse
Thats exactly it. I flashed Agats kernel with free gs4 and it worked perfectly. Thanks much
Sent from my SPH-L720 using xda app-developers app
jaaybs said:
Thats exactly it. I flashed Agats kernel with free gs4 and it worked perfectly. Thanks much
Sent from my SPH-L720 using xda app-developers app
Click to expand...
Click to collapse
NP boss enjoy
Sent from my SPH-L720 using xda premium

When will there be more SS roms?

So are the locked bl folks like myself left behind in the long-term? What needs to happen for there to be more SS ROM development??
Sent from my XT907 using xda app-developers app
zombolt said:
So are the locked bl folks like myself left behind in the long-term? What needs to happen for there to be more SS ROM development??
Sent from my XT907 using xda app-developers app
Click to expand...
Click to collapse
Supposedly, there's a way to make every ROM SS compatible. I think it has to do with removing the boot.img, but I'm sure there's more it than that. I've seen people complain about there being no SS ROMs, then someone mentions this solution, but nobody takes action. Honestly, it's going to be up to someone that has a locked down device to start putting out these SS compatible ROMs.
Then, you will run into kernel issues like we used to run into on the older SS ROMs. Let's say you want CM10.2 that is 4.3 based. Your stock ROM is 4.1.2, so you'll run into kernel issues like an inop camera, WiFi, etc. Honestly, your best bet is to find one of the 2 SS compatible stock ROMs that are the same kernel as you and use Xposed to modify it. There's someone on DroidRzr that used Xposed on his X with a stock ROM and he has been able to load up the custom CM themes.
RikRong said:
Supposedly, there's a way to make every ROM SS compatible. I think it has to do with removing the boot.img, but I'm sure there's more it than that. I've seen people complain about there being no SS ROMs, then someone mentions this solution, but nobody takes action. Honestly, it's going to be up to someone that has a locked down device to start putting out these SS compatible ROMs.
Then, you will run into kernel issues like we used to run into on the older SS ROMs. Let's say you want CM10.2 that is 4.3 based. Your stock ROM is 4.1.2, so you'll run into kernel issues like an inop camera, WiFi, etc. Honestly, your best bet is to find one of the 2 SS compatible stock ROMs that are the same kernel as you and use Xposed to modify it. There's someone on DroidRzr that used Xposed on his X with a stock ROM and he has been able to load up the custom CM themes.
Click to expand...
Click to collapse
Yeah... It can't be that hard - all the other motos have SS CMs out. Just gotta have someone with the knowledge and need/want to make it happen
Sent from my XT907 using Tapatalk
You'd probably have to cook up a kexec kernel to get the newer ROMs functioning properly...
Sent from my XT907 using xda app-developers app
miui rom
[ROM] MIUI v5 is this rom for ss or cwm?
virusalone said:
[ROM] MIUI v5 is this rom for ss or cwm?
Click to expand...
Click to collapse
Unlocked only
Sent from my Nexus 7 using Tapatalk 4

Categories

Resources