[ I9100G ] which method is good to cyanogenmod? - Galaxy S II Q&A, Help & Troubleshooting

Which method is best for installing cyanogenmod?
I mean, if i want cm9...
From GB to CM9 or from GB to ICS to CM9?
Which is i have to install stock ics before can upgrade to cyanogenmod...
Yes its sound like the same but little bit different...
If from GB can stright install CM9, i have CM9 custom bootloader...
If from stock ICS i have stock ICS bootloader then upgrade to CM...
I'm looking for the best method for my batterylife, i dunno if from GB maybe can save my batt more then from stock ICS to CM9...
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First two things you need to read about it nandroid bkup and efs bkup. Then think about flashing things.

Forgot to tell that, just skip that backup thing as i know how to do it, just want to know which is good for upgrading...
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Alot say that GB is better than ics or jb for battery but it's really up to you to test for yourself and find out. I will say that if you move to cm/aokp your battery will not be as good as with stock. So with that said flash jb as I think this is better than any with Odin. Just do stay away from ics 4.0.4 as this firmware has brick bug.
Also to install cm9 from GB flash it from cwm recovery

4.0.4 i get only with cyanogenmod, stock rom ics for my country Malaysia only up to 4.0.3...
Do u think jb is better? Or cm10? I'm still not upgrade to jb coz of external sd will be sdcard/enternal_sd, i use cm9 coz i like the way my external sd be a primary storage
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Related

Revert back to Stock ICS

Hi,
As the ICS is now available in India I wanted to know if I could install the stock ICS for my S29100 using KIES..
I already had flashed a custom ICS but wanted to install the stock ICS so I do not have any warranty issue also
will is it really safe to use triangle away, I already read about it in this forum:
http://forum.xda-developers.com/showthread.php?t=1494114
but is it really safe?
Yes, you should be safe if you have read it properly and understood what to do. However make a backup all the same.
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Ok,just one more thing could i go back to my original GB 2.3.6 i now use custom ICS rom.
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gurjot86 said:
Ok,just one more thing could i go back to my original GB 2.3.6 i now use custom ICS rom.
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Click to expand...
Click to collapse
yes u can go back to any stock rom of any country
I confirm that it is safe, I already use before. But you can flash stock ROM via Odin, this way is faster than Kies.

GB ROM

Hello,
Not sure if this is the correct place to post this queation...
i have updated to 4.0.4 and not really liking the black & blue and the way some of the programs come out... I know you can't downgrade back to 2.3.6 GB but wondered if there was a GB ROM that i could flash on my phone...
Hope someone can help...
Thank you
Sent from my Motorola Razr XT910.
afaik u cant even flash a gb rom, whole other kernel and bootloader..sry mate
As there were ics roms running on gb-kernel, I assume it would be POSSIBLE to run an gb rom on ics kernel(with many, many bugs
Sent from my XT910 using xda app-developers app

[Q] Updating to a Jelly Bean Custom Rom

Hi there!
I am wanting to update my Samsung Galaxy GT-i9300 but am worried about the process because of having installed a custom kernel previously (would this muck up installing a new custom rom I wonder..)
Please find attached a screenshot of the settings and please tell me what I should do (if anything needs done) before I flash a new custom rom.
Cheers!
if you're worried about kernels, then just flash stock kernel then flash a custom rom on it.
mputtr said:
if you're worried about kernels, then just flash stock kernel then flash a custom rom on it.
Click to expand...
Click to collapse
kk, could you provide me with a suitable stock kernel (or links to one) which will be compatible with the rom I have installed?
any stock kernel that is for jb will be fine.
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mputtr said:
any stock kernel that is for jb will be fine.
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Click to expand...
Click to collapse
I am on android version 4.0.4 (so technically not JellyBean). and its safe to flash a stock kernel for JB despite being on that version before I flash a custom rom?
Sorry for asking, get confused easily..
you should be fine updating with a custom kernel (as all roms flash a kernel as well). Just make sure you factory reset when moving from ics to JB as you will most likely encounter problems if you don't.
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Asimo2012 said:
I am on android version 4.0.4 (so technically not JellyBean). and its safe to flash a stock kernel for JB despite being on that version before I flash a custom rom?
Sorry for asking, get confused easily..
Click to expand...
Click to collapse
I would suggest flashing ICS stock kernel first if you're worried. I thought you were already on jb.
Sent from my GT-I9300 using xda app-developers app
Easy
Reflash the stock ics ROM
And flash any custom ROM you want
Enjoy
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CyanogenMod kernels

Just curious if i can use the same kernel from CyanogenMod 7.2.0 in CyanogenMod 9.1
Sent from my WT19i using xda app-developers app
Anyone der to help me... I wanna flash my rom but am away from a pc... So cant flash kernel
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I think it's better if you find a pc to use to flash it, 'cause you can't do it from it from the device itself if you don't know or don't have the recovery installed...
you can use but with minor edits to source
I have the recovero.... It seems informaciĆ³n will need to flash the kernel from pc..... Cause when i flashed Cm 9 without the kernel that came in it my phone got stuck in boot Screen....... Luckily i had a nandroid backup
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Greyjawripper said:
I have the recovero.... It seems informaciĆ³n will need to flash the kernel from pc..... Cause when i flashed Cm 9 without the kernel that came in it my phone got stuck in boot Screen....... Luckily i had a nandroid backup
Sent from my WT19i using xda app-developers app
Click to expand...
Click to collapse
i cant excatly guarantee for it to work because we need minor changes in source to fit in the different api so ... this just might be your case why not ask someone to upload the kernel for you
I guess the only way to flash it by using the kernel i got in the rom..... Btw thanx for the reply apprentiate it
Sent from my WT19i using xda app-developers app
You definitely can't use the CM7.2 kernel for CM9.1. There are a lot of differences between the two since one is GB based and the other is ICS based.
boot.img
please can anyone tell me in detail , what is boot.img for??????
Boot.img contains all the files required for the device to boot such as kernel and ramdisk. Without it, the device can't start. Boot.img when flashed, will copy all files to the /boot partition.
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Boot.img is the kernel file
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sashank said:
You definitely can't use the CM7.2 kernel for CM9.1. There are a lot of differences between the two since one is GB based and the other is ICS based.
Click to expand...
Click to collapse
but many phones use 2.6 kernel for both ics and gb so just the defconfig differs ...
speed_bot said:
but many phones use 2.6 kernel for both ics and gb so just the defconfig differs ...
Click to expand...
Click to collapse
That's partially true. For example, ICS ROMs for my HTC Desire HD used the 2.6 GB kernel as there was no official ICS kernel update from HTC. But the 2.6 ICS kernels required a lot of hacks, forward ports from various ICS kernel branches and backports from GB to work with ICS. For lack of a newer kernel version, the 2.6 kernel was used, but it was very different from the 2.6 GB kernel. It took months of hacks and hard work for devs to get everything working on the ICS ROMs with the 2.6 kernel. After Jelly Bean was released, it would have taken a ton of work to get the 2.6 kernel to work with it and not everything would have worked properly. Fortunately, Team Virtuous made a custom 3.0.xx kernel for the Desire HD all on their own, effectively making any kernel update from HTC's side useless, even if they did choose to release it. Another dev took this kernel and improved upon it like hell, and now we have perfectly working 4.2.1 Jelly Bean.
Of course, I might not be fully right about this because I'm no developer, but I've been following the ICS and JB threads for my phone for a long time and this is the way development was for it.

Can i roll back from jellybean to ics? no root

is it possible to go back to ics from jellybean? im thinking about upgrading to jellybean but wanna know that if i hate it can i get back ics on the galaxy s3 SGH-T999.
jaxo346 said:
is it possible to go back to ics from jellybean? im thinking about upgrading to jellybean but wanna know that if i hate it can i get back ics on the galaxy s3 SGH-T999.
Click to expand...
Click to collapse
yeah, i want to know also
Yes, I think that's possible using ODIN. I'm not entirely sure though, maybe root is required. In any case, JellyBean is ICS with a bunch of useful improvements. So if you like ICS, you'll only like JellyBean more.
Yes it is possible and most of the times it does not require root. Google shipped roms for your phone and download the ics one.
Sent from my HTC Wildfire using xda app-developers app
Yes, guys u can. Just download the ICS stock rom for your device from the net and flash it via odin and it does not require root but there are chances of a BRICK.
If u want that guide for your device then contact me.
Sent from my GT-P3100 using xda app-developers app

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