[Q] Which Kernel Should I Root and flash with ? - Galaxy S II Q&A, Help & Troubleshooting

Hello and Good Day Devs !
I am kind of a newbie in the world of rooting (for samsung galaxy s2 gt i9100). So i just recently got my dad's permission to root and flash a custom rom on my device . I am currently using a samsung galaxy s2 gt-i9100 running jelly bean 4.1.2 XWLST . Am from India and i am highly confused. So i would like to know which kernel would be the best for rooting my phone (best i.e. safe , bugless) After rooting i am planning to flash a custom rom. I would Most probably flash the PACman ROm (jelly bean 4.2.2) and would like to know which kernel would suit the rom. rather i would like to know which kernel is supported by the PACman rom. i searched and read a few threads and concluded that siyah is a bit buggy causing a lot of problems . Philz is a good kernel but i also read that PhilZ's kernel is not supported by a few roms. I also checked out the 'jeboo" kernel and found out that it was somehow related to the PHilZ kernel and eventually backed out . So pease help me out devs .. any help would be appreciated and thanks a lot for your co-operation :laugh:

Whatever kernel you flash will be overwritten when you flash your custom rom.......every custom rom comes with its own kernel......
So the choice is yours......
Select your kernel and flash it however the instructions say, then flash your custom rom.....job done.....no issues/worries about incompatiability........
Sent from my GT-I9100 using xda app-developers app

flasherruts said:
Hello and Good Day Devs !
I am kind of a newbie in the world of rooting (for samsung galaxy s2 gt i9100). So i just recently got my dad's permission to root and flash a custom rom on my device . I am currently using a samsung galaxy s2 gt-i9100 running jelly bean 4.1.2 XWLST . Am from India and i am highly confused. So i would like to know which kernel would be the best for rooting my phone (best i.e. safe , bugless) After rooting i am planning to flash a custom rom. I would Most probably flash the PACman ROm (jelly bean 4.2.2) and would like to know which kernel would suit the rom. rather i would like to know which kernel is supported by the PACman rom. i searched and read a few threads and concluded that siyah is a bit buggy causing a lot of problems . Philz is a good kernel but i also read that PhilZ's kernel is not supported by a few roms. I also checked out the 'jeboo" kernel and found out that it was somehow related to the PHilZ kernel and eventually backed out . So pease help me out devs .. any help would be appreciated and thanks a lot for your co-operation :laugh:
Click to expand...
Click to collapse
start with siyah kernel v6.0b5
It is the safest kernel to start with
Then flash pacman
It is your choice to flash a new kernel over the stock pacman kernel
You can flash whatever custom kernel you like and as @keithross39 mentioned dont worry about incompatibility
Use odin
Gud luck mate

The only time you have to think about kernel compatiability is if you decide to flash a kernel on top of your custom rom. As I previously mentioned, the kernel you flash to root your phone will be overwritten when you flash the rom, so no incompatiability will exist because you will have basically erased that kernel during the flash. But any kernel you flash on top of your new rom HAS to be compatiable or you'll end up with an unuseable phone......
Sent from my GT-I9100 using xda app-developers app

Thanks A lot devs . I will now root my phone and flash the rom ! thanks a lot for your help!

Related

[Q] Help with new ROM for SGS2

Hello all,
I am a super newbee in this field ( please dont laugh ) ! I apologise if i have failed to see the solution for my queries in other threads
I own a Samsung Galaxy S2 I9100 with the following config:
Android version : 4.0.3
Baseband Version : I9100DDLPA
Kernel Version : 3.0.15-I9100XWLP7-CL340913 [email protected]#3
Build number : IML74K.XWLP7
I have already rooted the device with the help of posts on xda. I aspire to put a custom ROM of Jelly Bean in my phone. I have certain questions abt it.
1. Can someone suggest me an apt choice of ROM to suit my current build?
2. will i be able to come back to my stock firmware incase of any problem with the custom ROM. If yes, how ?
3. can i partition my ROM and have to Androids running ? Custom ICS and JellyBean ?
Please help. Thanks in advance.
JB ROMs are still in development stages and need some time to get fully baked.
If you want to try one CM is great.
And you can return back to ICS anytime.
To dual boot JB and ICS you need to flash Siyah kernel.
I would suggest you to flash (install) CM9 for few days. Bcoz its better to be using known stable build for regular use. You will get an idea of what to expect of AOSP ROMS and what are their limitations.
Then you can plunge into exciting world of flashing nightlies (less stable) builds.
You can always go back to default samsung roms if CyanogenMod roms dont suite you. There are lot of custom Samsung rom based roms to choose from with very good customizations.
But before you do any flashing of rom, BACKUP YOUR CURRENT ROM.
Sent from my GT-I9100 using Tapatalk 2
Better flash Siyah first...
http://gokhanmoral.com
After Flashing Download the Custom Rom.Zip File You Want to Flash..
Boot into ClockworkMod Recovery (Siyah kernel's) Recovery...
Flash the Zip from Here
Peace
Hit Thanks & It will Disappear
Sent from S II Running Fully Modified Official ICS 4.0.4
Next Device: Upcoming Nexus
praveenthivari said:
I would suggest you to flash (install) CM9 for few days. Bcoz its better to be using known stable build for regular use. You will get an idea of what to expect of AOSP ROMS and what are their limitations.
Then you can plunge into exciting world of flashing nightlies (less stable) builds.
You can always go back to default samsung roms if CyanogenMod roms dont suite you. There are lot of custom Samsung rom based roms to choose from with very good customizations.
But before you do any flashing of rom, BACKUP YOUR CURRENT ROM.
Sent from my GT-I9100 using Tapatalk 2
Click to expand...
Click to collapse
I have backed up by current ROM into sd card using CWM. Have downloaded the stock firmware too for my phone (in case). Is there any specific ROM u wud suggest?
Omaxe said:
Better flash Siyah first...
After Flashing Download the Custom Rom.Zip File You Want to Flash..
Boot into ClockworkMod Recovery (Siyah kernel's) Recovery...
Flash the Zip from Here
Peace
Hit Thanks & It will Disappear
Sent from S II Running Fully Modified Official ICS 4.0.4
Next Device: Upcoming Nexus
Click to expand...
Click to collapse
Well, thanks for this info. I ll back up my apps using Titanium backup n go ahead flashing to Siyah Kernel...
one query before...after changing the kernel, i can still come back to my stock ROM rite ?
Abhijit30 said:
Well, thanks for this info. I ll back up my apps using Titanium backup n go ahead flashing to Siyah Kernel...
one query before...after changing the kernel, i can still come back to my stock ROM rite ?
Click to expand...
Click to collapse
Yes, of course.

I want to buy S2

Hi S2 user, :angel:
I will buy a new S2 phone soon. I need a little help from you guys. I need to know something about S2 :laugh:
My old phone is Xperia Arc S. This phone need following step to flash kernel and rom.
Kernel:
For flash a new kernel, I need to unlocked the bootloader first. Then this phone can flash any kernel anytime. But unlocking the bootloader will void the warranty.
Rom:
For flash a new rom, as long as the rom does not need to have specific kernel, in other word, stock based rom, no unlocked bootloader required. Just install the CWM and flash the rom.
How about S2 guys? Do I need to unlock something before flash kernel and rom? Can someone explain clearly or likes how I explain my old phone.
p/s- i read in some thread, doing a factory reset in cwm will make S2 brick? hard brick? can't even power on the phone. OMG is it true?
its very scary because in Xperia Arc S, i always flash a new rom. flasholic
I don't want my new S2 brick
I hope you guys can help me. Thanks
faiz5200 said:
Hi S2 user, :angel:
I will buy a new S2 phone soon. I need a little help from you guys. I need to know something about S2 :laugh:
My old phone is Xperia Arc S. This phone need following step to flash kernel and rom.
Kernel:
For flash a new kernel, I need to unlocked the bootloader first. Then this phone can flash any kernel anytime. But unlocking the bootloader will void the warranty.
Rom:
For flash a new rom, as long as the rom does not need to have specific kernel, in other word, stock based rom, no unlocked bootloader required. Just install the CWM and flash the rom.
How about S2 guys? Do I need to unlock something before flash kernel and rom? Can someone explain clearly or likes how I explain my old phone.
p/s- i read in some thread, doing a factory reset in cwm will make S2 brick? hard brick? can't even power on the phone. OMG is it true?
its very scary because in Xperia Arc S, i always flash a new rom. flasholic
I don't want my new S2 brick
I hope you guys can help me. Thanks
Click to expand...
Click to collapse
You don't have to unlock. Just download Odin and flash all the ROMs/kernels you want. As for the cwm brick bug, your phone will only brick if you factory reset through CWM in 4.0.4. In other versions you should be fine.
Sent from my GT-I9100 using xda app-developers app
S2 is the best phone to flash No problem with bootloader lock, you download Odin und happy flashing
Gesendet von meinem GT-I9100 mit Tapatalk 2
preseodymium said:
You don't have to unlock. Just download Odin and flash all the ROMs/kernels you want. As for the cwm brick bug, your phone will only brick if you factory reset through CWM in 4.0.4. In other versions you should be fine.
Sent from my GT-I9100 using xda app-developers app
Click to expand...
Click to collapse
Thanks for your reply. For the brick bug, how come I want to factory reset when flashing new rom? And I think latest firmware for S2 is 4.0.4. Correct me if im wrong.
faiz5200 said:
Thanks for your reply. For the brick bug, how come I want to factory reset when flashing new rom? And I think latest firmware for S2 is 4.0.4. Correct me if im wrong.
Click to expand...
Click to collapse
I am currently installing 4.1.2, unofficial of course
The brick Bug problem by 4.0.4 only with Stock Kernel ! when you have 4.0.4 on your phone you flash a save Kernel (Siyah, Dorimanax .....) with Odin (only Odin not Cwm )
and it was save .After you can flash wath you want
smooth 123 said:
The brick Bug problem by 4.0.4 only with Stock Kernel ! when you have 4.0.4 on your phone you flash a save Kernel (Siyah, Dorimanax .....) with Odin (only Odin not Cwm )
and it was save .After you can flash wath you want
Click to expand...
Click to collapse
I see. So the brick bug actually come from the kernel inside firmware 4.0.4. Not the entire 4.0.4 firmware. Is other custom kernel likes you mention (Siyah, ..) is 100% safe?
faiz5200 said:
I see. So the brick bug actually come from the kernel inside firmware 4.0.4. Not the entire 4.0.4 firmware. Is other custom kernel likes you mention (Siyah, ..) is 100% safe?
Click to expand...
Click to collapse
enjoy ur s2, i just got the s2 and flash over 20 roms like crazy!! jajaja is very good phone
faiz5200 said:
I see. So the brick bug actually come from the kernel inside firmware 4.0.4. Not the entire 4.0.4 firmware. Is other custom kernel likes you mention (Siyah, ..) is 100% safe?
Click to expand...
Click to collapse
100% safe! Her is ohter 100% safe Kernel http://forum.xda-developers.com/showthread.php?t=1877270
for 4.0.4 Stock In this thread you found more to the theme brick bug.
I flash my S2 i don t know:victory: 100× no Problem S2 likes flashing
faiz5200 said:
Thanks for your reply. For the brick bug, how come I want to factory reset when flashing new rom? And I think latest firmware for S2 is 4.0.4. Correct me if im wrong.
Click to expand...
Click to collapse
You factory reset when installing ROMs to make sure there are no errors. Plus with siyah kernels, you can't be 100% sure your phone won't brick when factory reset in CWM. Best is to flash 4.0.3 before doing anything else.
Sent from my GT-I9100 using xda app-developers app
Rooting
Guys.. 1 more question.
When I get my S2, I plan to flash custom rom like aosp or aokp but not stock rom.
Do I need to root my S2 first before flash any rom? Because my Xperia Arc S, I do not need to root because root come inside with the custom rom zip. So when I flash a new rom, my Xperia automatically root. No need to do other step.
I'm curious about this because I see in some thread, talking about cf root or something like that. The thread is very updated. Looks like it very necessary to do it at least once to have root before flash any custom rom.
Please explain for me about this root. Thanks guys.
faiz5200 said:
Guys.. 1 more question.
When I get my S2, I plan to flash custom rom like aosp or aokp but not stock rom.
Do I need to root my S2 first before flash any rom? Because my Xperia Arc S, I do not need to root because root come inside with the custom rom zip. So when I flash a new rom, my Xperia automatically root. No need to do other step.
I'm curious about this because I see in some thread, talking about cf root or something like that. The thread is very updated. Looks like it very necessary to do it at least once to have root before flash any custom rom.
Please explain for me about this root. Thanks guys.
Click to expand...
Click to collapse
I'm not sure about CF root though. Although the ROM I am in now has built in kernels, I still think its best to root first as some ROMs may not have the built in kernel (never searched other ROMs not entirely sure). I might recomment siyah kernel though
Sent from my GT-I9100 using xda app-developers app
preseodymium said:
I'm not sure about CF root though. Although the ROM I am in now has built in kernels, I still think its best to root first as some ROMs may not have the built in kernel (never searched other ROMs not entirely sure). I might recomment siyah kernel though
Sent from my GT-I9100 using xda app-developers app
Click to expand...
Click to collapse
uhh.. So root is come from kernel? Ermm.. so it different than xperia. So if I flash siyah kernel, I do not need to root?
faiz5200 said:
Guys.. 1 more question.
When I get my S2, I plan to flash custom rom like aosp or aokp but not stock rom.
Do I need to root my S2 first before flash any rom? Because my Xperia Arc S, I do not need to root because root come inside with the custom rom zip. So when I flash a new rom, my Xperia automatically root. No need to do other step.
I'm curious about this because I see in some thread, talking about cf root or something like that. The thread is very updated. Looks like it very necessary to do it at least once to have root before flash any custom rom.
Please explain for me about this root. Thanks guys.
Click to expand...
Click to collapse
Some people want to simple root their phone and don't care too much for custom roms and stuff. So for such people, they can simply root their phone using one of the many rooting methods mentioned.
However, if your primary aim is to install a custom rom/ kernel, you can use Odin to flash a custom kernel on your phone. (like siyah, dorimanx, Philz, the list goes on..) and you'll have root. Thereafter you can install a custom rom compatible with the kernel. Earlier on it was simple. Flash siyah or dorimanx and any custom rom will work on it. Kinda like a 'one size fits all' deal. However, right now with new mali drivers etc, some versions of a kernel are reqd based on which rom you plan to install. (JB with new mali drivers or JB without those new mali drivers/ICS)
CF-Root is the method I'd used..but right now it's not recommended, since if you're on certain 4.0.4 firmware, that is susceptible to the emmc brickbug I'm sure you've read about. Siyah, dori, etc kernels are safe.
HAXTREME said:
Some people want to simple root their phone and don't care too much for custom roms and stuff. So for such people, they can simply root their phone using one of the many rooting methods mentioned.
However, if your primary aim is to install a custom rom/ kernel, you can use Odin to flash a custom kernel on your phone. (like siyah, dorimanx, Philz, the list goes on..) and you'll have root. Thereafter you can install a custom rom compatible with the kernel. Earlier on it was simple. Flash siyah or dorimanx and any custom rom will work on it. Kinda like a 'one size fits all' deal. However, right now with new mali drivers etc, some versions of a kernel are reqd based on which rom you plan to install. (JB with new mali drivers or JB without those new mali drivers/ICS)
CF-Root is the method I'd used..but right now it's not recommended, since if you're on certain 4.0.4 firmware, that is susceptible to the emmc brickbug I'm sure you've read about. Siyah, dori, etc kernels are safe.
Click to expand...
Click to collapse
I see. Thanks. Flash kernel using odin. I see in this thread http://forum.xda-developers.com/showthread.php?t=1125282 , he said flashing a kernel is same like flashing a custom rom which is in CWM. Flash kernel in CWM? I thought the only way is using odin.
faiz5200 said:
I see. Thanks. Flash kernel using odin. I see in this thread http://forum.xda-developers.com/showthread.php?t=1125282 , he said flashing a kernel is same like flashing a custom rom which is in CWM. Flash kernel in CWM? I thought the only way is using odin.
Click to expand...
Click to collapse
For S2 we can. Because it won't increase your flash counter. But I never tried flashing through CWM.
Sent from my GT-I9100 using xda app-developers app
faiz5200 said:
I see. Thanks. Flash kernel using odin. I see in this thread http://forum.xda-developers.com/showthread.php?t=1125282 , he said flashing a kernel is same like flashing a custom rom which is in CWM. Flash kernel in CWM? I thought the only way is using odin.
Click to expand...
Click to collapse
There are two ways of flashing a kernel.
1. Use the .tar version of the kernel and flash via Odin
(the same way you'd flash the cf-root kernel you'd mentioned in a post above. I'll assume you know the steps as they're mentioned in chainfire's post. Or there are many posts on that topic)
Advantages: tried and tested route, simple one step method. You're rooted and have a custom kernel in about 30 secs.
Disadvantage: You rely on Odin and the connection to your computer which some don't trust. Increases flash counter.
2. Use the .zip version of the kernel and flash via CWM.
Since in this case you need CWM to start off with, you can use Rachmat3's method described HERE to get temporary CWM first.
Advantages: No computer needed. Everything happens through your phone. Flash counter isnt increased.
Disadvantages: Can be a little finicky at times..but you'll get there eventually. Involves 2 steps. First get temporary CWM, then install custom kernel via cwm.
You can start off with a very popular kernel. Gokhanmoral's siyah kernel.Both the zip and tar versions are available downloadable from HERE
HAXTREME said:
There are two ways of flashing a kernel.
1. Use the .tar version of the kernel and flash via Odin
(the same way you'd flash the cf-root kernel you'd mentioned in a post above. I'll assume you know the steps as they're mentioned in chainfire's post. Or there are many posts on that topic)
Advantages: tried and tested route, simple one step method. You're rooted and have a custom kernel in about 30 secs.
Disadvantage: You rely on Odin and the connection to your computer which some don't trust. Increases flash counter.
2. Use the .zip version of the kernel and flash via CWM.
Since in this case you need CWM to start off with, you can use Rachmat3's method described HERE to get temporary CWM first.
Advantages: No computer needed. Everything happens through your phone. Flash counter isnt increased.
Disadvantages: Can be a little finicky at times..but you'll get there eventually. Involves 2 steps. First get temporary CWM, then install custom kernel via cwm.
You can start off with a very popular kernel. Gokhanmoral's siyah kernel.Both the zip and tar versions are available downloadable from HERE
Click to expand...
Click to collapse
Another disadvantage of "not using" odin is when you cant enter cwm.
I use cwm and mobile odin.I flashed a kernel and couldnt access cwm nor phone would boot.
So I had to fix it using my pc via odin.

Doubt with Siyah kernel for S3

Hello guys, im a S3 GT-I9300 user, and im very happy with my device.
Today i rooted and installed cmw 6.0.2.8 touch, i want to install Siyah kernel version 1.8.9 and i have stock Android Samsung Rom Jelly Bean 4.1.2, my question is... if i install Siyah will i lose my current rom? or i need to install first Siyah and then again stock rom?
Thx for the help!
Orioncol said:
Hello guys, im a S3 GT-I9300 user, and im very happy with my device.
Today i rooted and installed cmw 6.0.2.8 touch, i want to install Siyah kernel version 1.8.9 and i have stock Android Samsung Rom Jelly Bean 4.1.2, my question is... if i install Siyah will i lose my current rom? or i need to install first Siyah and then again stock rom?
Thx for the help!
Click to expand...
Click to collapse
No. Siyah is just a kernel. You can flash that without a doubt, as long as your Rom is supported by the kernel. But you should be fine I mean, I'm running it on MIUI ICS . Normally that should have bricked it ^^
CyanogenModded Very China-like, from my Samsung Galaxy S III
LG Familyguy59/Beatsleigher
Orioncol said:
Hello guys, im a S3 GT-I9300 user, and im very happy with my device.
Today i rooted and installed cmw 6.0.2.8 touch, i want to install Siyah kernel version 1.8.9 and i have stock Android Samsung Rom Jelly Bean 4.1.2, my question is... if i install Siyah will i lose my current rom? or i need to install first Siyah and then again stock rom?
Thx for the help!
Click to expand...
Click to collapse
As mentioned, Siyah is a kernel, not a rom. You can flash any kernel and keep your rom, as long as it is supported. Siyah currently supports anything besides the new leaked 4.2.1 roms which have different drivers. Hence you will be fine. In case you face some trouble you also can simply flash back your stock kernel (you can find most kernels in Perka's Stash).

[Q] Little help flashing to cyanogen

Hey guys.
I just bought a samsung tab 2 10.1 and want to flash it to cyanogen to get the multiple users that comes with android 4.2.x
I havent flashed in a while since i updated my i9100 to 4.1.2, so i thought best to flash my i9100 to cyanogen first to try it out as my phone is already rooted. I found a few guides for installing cyanogen to my phone using cwm recovery to install from the SD card.
I remember rooting my device back when i updated it to 4.1.2 but when i tried to boot into cwm is would boot into the stock android recovery.
so i figured i needed to flash cwm recovery.
after checking all kies processes were stopped i flashed the kernel "GT-I9100_ClockworkMod-Recovery_4.0.1.4" , but the phone would not boot and hang at start screen.. as a plus side i now had access to cwm recovery from boot... ironic.
so i booted into cwm recovery thinking to install cyanogen mod as i thought maybe the rom wasn't compatible with the kernel?
but noticed that the cyanogen rom was not present on the menu in cwm recovery, must of put it in the wrong place. I was now thinking to get my phone to boot into 4.1.2 that should still be on the phone, since the current kernel wasn't working i flashed "Siyah-v5-MCM-i9100-vsync_sysfs-20130217" in hopes it would be compatible.. still no luck with it booting. but i still have access to CWM recovery.
Any thoughts on how i should proceed? if i can get cyanogen onto the SD card should i install it via CWM?
little lost at the moment. been a while since i done all this.
here is the information i noted down before i started today.
4.1.2
i9100xxls8
3.0.31-863787 [email protected] #3 smp preempt thu jan 31 12:20:07 kst 2013
JZO54K.I9100xxms1
Thanks for reading.
Serathian
Philz kernel lss flash that through odin. Reboot to recovery, do the wipes and and reboot. 4.1.2 should boot up then. Then move custom rom to int sd and flash away. Philz installs custom cwm. Once you have flash custom rom philz will be replaced with stock custom kernel with cwm built in to it.
andrewwright said:
Philz kernel lss flash that through odin. Reboot to recovery, do the wipes and and reboot. 4.1.2 should boot up then. Then move custom rom to int sd and flash away. Philz installs custom cwm. Once you have flash custom rom philz will be replaced with stock custom kernel with cwm built in to it.
Click to expand...
Click to collapse
I'll give it a shot, is the Philz kernel you mentioned this one?;
<< 03.06.2013 - PhilZ-cwm6 v5.06.1 with CWM 6.0.3.2 based recovery >>
I'm not to sure what kernel version i need.
how would i find out this information ?
Many thanks.
Edit:
I noticed in my previous notes i made when first flashing my phone a year or so ago. The kernel i used was this;
3.0.15-I9100BGLP8-CL317471 [email protected]#3
It is now kernel version;
3.0.31-863787 [email protected] #3 smp preempt thu jan 31 12:20:07 kst 2013
which has no reference to previous kernels. but my current baseband version is: i9100xxls8
LS8 stands out in both... so would using PhilZ-cwm6-XWLSY-ORA-5.10.0.tar.md5 work on my phone?
Lss will work as it for 4.1.2 it just has newer cwm installed.tar is for odin. You could get the zip one and put on an sd card put bk in your phone and flash it like that. Make sure its zip not tar for flashing in cwm.
Thanks
andrewwright said:
Lss will work as it for 4.1.2 it just has newer cwm installed.tar is for odin. You could get the zip one and put on an sd card put bk in your phone and flash it like that. Make sure its zip not tar for flashing in cwm.
Click to expand...
Click to collapse
Thanks, that worked. opted for no installing the nightly version of cyanogenmod as i would like something more stable on my phone.
I've been looking at Resurrection Remix 3.1.2 or CM1UI Jelly Bean.
Is the Philz kernel i installed a widely compatible kernel or should i install Siyah ? my last attempt to install Siyah kernel lead me to write this post.. how would i go about installing a more widely compatible kernal with out ending up in a hang screen again ?
Kind regards and many thanks.
Serathian
Serathian said:
Is the Philz kernel i installed a widely compatible kernel or should i install Siyah ? my last attempt to install Siyah kernel lead me to write this post..
Click to expand...
Click to collapse
By 'compatible', you mean the kernel works with many ROMs?
Philz is a stock based kernel. So it only works on stock based ROMs, and depends on the android version and the build versions (like LSS, LSJ, LSD etc). Siyah is more compatible, because it only depends on the android version (like JB, ICS or GB).
You had a bootloop before after flashing Siyah mcm kernel, because the mcm kernel supports AOSP 4.2.2 ROMs, not stock JB.
Serathian said:
how would i go about installing a more widely compatible kernal with out ending up in a hang screen again ?
Click to expand...
Click to collapse
To avoid bootloops after flashing a kernel, use these tips:
1. Flash only kernels supported by your current firmware. Suppose you are running stock JB and you want to flash AOSP 4.2.2 ROM. You might be tempted to flash Siyah mcm kernel (because it supports AOSP 4.2.2). But that would end up in a bootloop as Siyah mcm doesn't support stock JB! :good:
2. Use a kernel cleaning script before flashing any kernels. :good:
immortalneo said:
By 'compatible', you mean the kernel works with many ROMs?
Philz is a stock based kernel. So it only works on stock based ROMs, and depends on the android version and the build versions (like LSS, LSJ, LSD etc). Siyah is more compatible, because it only depends on the android version (like JB, ICS or GB).
You had a bootloop before after flashing Siyah mcm kernel, because the mcm kernel supports AOSP 4.2.2 ROMs, not stock JB.
To avoid bootloops after flashing a kernel, use these tips:
1. Flash only kernels supported by your current firmware. Suppose you are running stock JB and you want to flash AOSP 4.2.2 ROM. You might be tempted to flash Siyah mcm kernel (because it supports AOSP 4.2.2). But that would end up in a bootloop as Siyah mcm doesn't support stock JB! :good:
2. Use a kernel cleaning script before flashing any kernels. :good:
Click to expand...
Click to collapse
Thanks for your reply, i have a few questions to try and understand.
Would i be right in saying;
When im looking to install a new kernel and/or Rom. My check list should be;
1. Kernel to phone compatability. I.e my phone is LS8 so i look for LSS/LSY/LSD soforth and so-on.
2. Kernel to Romcompatability. I.e Philz is a stock kernal hence why it works with 4.1.2 stock Rom.
So if i want to install Resurection Remixed i believe its a modified stock Rom so it should work with Philz?
As would cyanogenmod as it is modified stock?
Or is even that modified to much?
If i want to change both kernel and Rom, would it work if i installed for example siyah kernel then boot into CWM recovery and installed from there a new Rom?
Im looking to try out a few roms on my i9100, mainly Reserection remix, and other cyanogenmod clones with light modification as i enjoy the stock android experiance.
Also looking to install cyanogenmod to my p5100 tab. Flashing Philz p5100 kernal and then installing superuser through recovery and then installing cyanogenmod 10 stable version?
thanks for reading and taking the time to anwser my previous questions.
Many thanks
Serathian.
Serathian said:
Would i be right in saying;
When im looking to install a new kernel and/or Rom. My check list should be;
1. Kernel to phone compatability. I.e my phone is LS8 so i look for LSS/LSY/LSD soforth and so-on.
2. Kernel to Romcompatability. I.e Philz is a stock kernal hence why it works with 4.1.2 stock Rom.
So if i want to install Resurection Remixed i believe its a modified stock Rom so it should work with Philz?
As would cyanogenmod as it is modified stock?
Click to expand...
Click to collapse
Don't worry, things can be a bit hard to digest at first.
Let me make it easier:
1. U are currently using a stock or custom ROM, but you want to change the kernel (without any plans to flash a new ROM). In this case, you need to select a kernel that is compatible with your current ROM.
2. U are on a stock ROM, and you need to flash a custom ROM. You want to flash a kernel to root it and install CWM (to enable u to flash a new ROM). In this case also, u should flash a kernel that supports your current stock ROM.
3. U are on a custom ROM, and you want to try another custom ROM (which may require another kernel to support it). In this case, you DON'T need to flash a new kernel that will support ur new ROM. You can flash the new ROM directly. All custom ROMs come with their own supported kernels bundled in the ROM. So, after flashing the new ROM, your current kernel will be REPLACED by a supported one from the new ROM.
Better?
"To err is human, to forgive is divine. "
Sent from my SGS II
I dont believe that rr is stock based. Sorry I didnt reply xda app was down. Immortalneo is top man and will guide you down the right path.:thumbup:
immortalneo said:
Don't worry, things can be a bit hard to digest at first.
Let me make it easier:
1. U are currently using a stock or custom ROM, but you want to change the kernel (without any plans to flash a new ROM). In this case, you need to select a kernel that is compatible with your current ROM.
2. U are on a stock ROM, and you need to flash a custom ROM. You want to flash a kernel to root it and install CWM (to enable u to flash a new ROM). In this case also, u should flash a kernel that supports your current stock ROM.
3. U are on a custom ROM, and you want to try another custom ROM (which may require another kernel to support it). In this case, you DON'T need to flash a new kernel that will support ur new ROM. You can flash the new ROM directly. All custom ROMs come with their own supported kernels bundled in the ROM. So, after flashing the new ROM, your current kernel will be REPLACED by a supported one from the new ROM.
Better?
Click to expand...
Click to collapse
So my breakdown would be I'm using a Stock ROM with Philz kernel rooted and CWM. I want to Install Resurrection Remix which is a 4.2.x ROM, Philz is a 4.1.x Kernel so i need to install a new kernel to support Resurrection Remix? or would that come with its own Kernel?
And for my tablet. I flash Philz kernel and install superuser to root the device. so now its stock Rom with Philz kernel. So when i install Cyanogenmod Rom it will install its own Kernel or do i also need to install a Kernel that supports 4.2.x?
Or is it Firmware version based Kernel updates that happen when you install and new custom ROM?
i.e Running 4.1.x kernel and installing a 4.1.x Custom ROM will update the kernel, but installing a 4.2.x ROM will not?
vice versa Running a 4.2.x kernel and installing a 4.2.x ROM will update the kernel, but installing a 4.1.x ROM will not?
Kind Regards, I appreciate your time for reading my mind numbing questions.
Serathian
For you i9100 just flash the rom using philz cmw recovery and once its done you will have a custom rom with custom cm kernel which is rooted and has cwm with it. I would say to format system ,data, cache and preload before you flash it using philz recovery and make sure the rom and gapps is on int sd card were you can find it.
As for the tablet make sure philz is compatible with that tablet first!! Dont just flash it on that thinking because its 4.1.2 it will work.
Btw with philz also come with root access too.
Serathian said:
So my breakdown would be I'm using a Stock ROM with Philz kernel rooted and CWM. I want to Install Resurrection Remix which is a 4.2.x ROM, Philz is a 4.1.x Kernel so i need to install a new kernel to support Resurrection Remix? or would that come with its own Kernel?
Click to expand...
Click to collapse
No, you don't need to install a new kernel, because flashing RR will flash a compatible kernel (included in the ROM) by itself. :good:
Serathian said:
And for my tablet. I flash Philz kernel and install superuser to root the device. so now its stock Rom with Philz kernel. So when i install Cyanogenmod Rom it will install its own Kernel or do i also need to install a Kernel that supports 4.2.x?
Click to expand...
Click to collapse
CM ROM will install its own kernel, so you don't need to do that. :good:
Serathian said:
Or is it Firmware version based Kernel updates that happen when you install and new custom ROM?
i.e Running 4.1.x kernel and installing a 4.1.x Custom ROM will update the kernel, but installing a 4.2.x ROM will not?
vice versa Running a 4.2.x kernel and installing a 4.2.x ROM will update the kernel, but installing a 4.1.x ROM will not?
Click to expand...
Click to collapse
Don't overcomplicate stuff mate. When you flash a ROM, the kernel contained in the ROM will be replace your current kernel. Simple.
Thanks a lot!!!
I installed RR to my i9100 and cm10.1 to my p5100.
I'm having a little trouble with i9100 device though, I keep getting random sim locks on the device.. Not sure what could be causing it. It didn't happen on stock 4.1.2.
The devices will be locked and when I wake it I get prompted for the sim lock code. I now have the sim lock on my phone deactivated but I'm fearful that even thought I am not getting prompted for the sim code, the sim could be de-activated while the phone is in sleep thus not connect to the network?
Could be a loss of signal activate a security feature of the sim. Or a problem with the kernel?
Kind regards.
Many many thanks for all your advice into helping me understand a little better.
Serathian.
Sent from my GT-P5100 using xda app-developers app
If you're sim locked, then you want the app 'Galaxsim unlock'. Search for the xda thread, the OP is spocky12 if that helps you find it. It won't be kernel related. And, test it for yourself. See if you get messages /calls / push notifications while your screen is off & phone is sleeping.
Sent from a galaxy far, far away
The i9100 was originally sim locked, but I paid someone to unlock it, once I got the phone back from him "unlocking" it. It was apparent that he has flashed the device with a new kernel and ROM in order to unlock it... Not to sure of the process. A couple months later I flashed 4.1.2 as it wasn't available as a update on the ROM he installed. The phone re-sim locked and I downloaded the app you mentioned and unlocked the phone successfully, been happily using it up until I installed RR. Now I'm suffering from random pin locks. The phone connects to the network and functions perfectly, apart from said sim locks.
My only fear is missing important calls if this lock is causing network disconnections. Can I log network functions and connectivity to see what's causing it?
Regards
Sent from my GT-P5100 using xda app-developers app

What is the right order?

Hello. I have a SGH-I777 on android 2.3.6 not rooted or anything. What is the correct order to do stuff to go to a custom newer rom? Thank you.
Please someone?
eltarod said:
Hello. I have a SGH-I777 on android 2.3.6 not rooted or anything. What is the correct order to do stuff to go to a custom newer rom? Thank you.
Click to expand...
Click to collapse
Take the OTA to the latest firmware for the at&t s2 which is Android 4.1.2 and then root it using the frama root app (just search Google for it). Once rooted pick a kernel to flash in ODIN or mobile ODIN. For AOSP ROMs I think ktoonsez kernel works and for touchwiz ROMs AJ kerwick kernel works well. I recommend flashing AJ kernel first as it works with the stock Samsung ROM.
Once you have flashed AJ kernel boot into recovery which will now be CWM recovery. From there you can flash shoStock ROM or whizz cat ROM (see my guide here in the s2 forums on how to boot i9100 TW ROMs) or any AOSP ROMs you like. Just make sure you have an AOSP kernel for AOSP ROMs and a touch wiz kernel for TW ROMs. Most ROMs come with a kernel though.

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