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Old July 18th, 2012, 01:02 PM   #1 (permalink)
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Default How do I downgrade from 4.0 back to 2.3.6?

I updated from 2.3.6 to 4.0 via Samsung Kies, and I hate it

It so so laggy especially the keyboard and I dont like some of the minor visual changes.

How do I change back to 2.3.6 firmware? Thank you

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Old July 18th, 2012, 01:38 PM   #2 (permalink)
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I agree, ICS is not an improvement on this phone.

Have had the phone about 2 months, never had shut down due to a software freeze. Been two weeks since ICS, have had to power down four times now due to lock up.

I will let you know if I find the way to go back.
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Old July 18th, 2012, 01:55 PM   #3 (permalink)
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Hi folks.

You can follow the sticky at the top of this page, How To Odin any stock rom, to get back to Gingerbread. Its pretty simple. Just read through carefully before you start.

Have fun.
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Old July 18th, 2012, 02:33 PM   #4 (permalink)
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Quote:
Originally Posted by Atmazzz View Post
Hi folks.

You can follow this guide to get back to Gingerbread. Its pretty simple. Just read through carefully before you start.

Have fun.
Thank you so much, worked perfectly!
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Old July 18th, 2012, 02:35 PM   #5 (permalink)
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Thank you so much, worked perfectly!

Great! Glad to hear it. Didn't take you long either.
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Old July 18th, 2012, 02:47 PM   #6 (permalink)
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Originally Posted by Atmazzz View Post
Great! Glad to hear it. Didn't take you long either.
Well it looks like I'll have to do factory restore now...
Im getting a ton of "Sorry! The process xxx stopped working! Force close" errors.
Cant open contacts or messaging :\
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Old July 18th, 2012, 02:58 PM   #7 (permalink)
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Originally Posted by syatek View Post
Well it looks like I'll have to do factory restore now...
Im getting a ton of "Sorry! The process xxx stopped working! Force close" errors.
Cant open contacts or messaging :\
Thats common. Do the wipe data/factory reset in recovery and the format cache partition.
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Old July 18th, 2012, 03:04 PM   #8 (permalink)
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Thats common. Do the wipe data/factory reset in recovery and the format cache partition.
Excellent, thanks again man I appreciate it.
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Old February 13th, 2013, 11:46 AM   #9 (permalink)
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Default Galaxy SII downgrade from 4.0.4 to 2.3.6

Hello,
I read the posts on this issue and my question is in relation to my phone and its compatibility to the instructions above.
The model number is:GT-I9100
The baseband version is:I9100JHLPC
The Kernal versionis:3.0.15-1087786
The Build number is:IMM76D.JHLPC
Can I follow the instructions above?
Many thanks,
Ilan
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Old February 13th, 2013, 12:06 PM   #10 (permalink)
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Originally Posted by IBK View Post
Hello,
I read the posts on this issue and my question is in relation to my phone and its compatibility to the instructions above.
The model number is:GT-I9100
The baseband version is:I9100JHLPC
The Kernal versionis:3.0.15-1087786
The Build number is:IMM76D.JHLPC
Can I follow the instructions above?
Many thanks,
Ilan

Hello IBK and welcome to AF

No, if you used these files you would probably brick your phone. You need to try the Galaxy S2 International forum. That's the forum for the I9100.
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Old February 16th, 2013, 07:06 PM   #11 (permalink)
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Default Re: How do I downgrade from 4.0 back to 2.3.6?

You probably upgraded to 4.0.3, which is full of lagging and problems. You need to upgrade to 4.0.4, which is problem free.
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Old February 22nd, 2013, 06:44 PM   #12 (permalink)
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Default Re: How do I downgrade from 4.0 back to 2.3.6?

I have a few devices on 2.2 with no problems and am not really as insistent on updates as some are. That said, 4.04 on my S2 blows Gingerbread away.
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Old February 25th, 2013, 03:31 PM   #13 (permalink)
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Yes, a factory reset solves OTA update bugs and lag. IMO, ICS is a definite improvement over GB.
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Old March 18th, 2013, 06:59 PM   #14 (permalink)
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I cannot find the sticky at the top of the page? I am a newbie and just figuring this site out. I need to restore my wifes phone back to Gingerbread asap because of a possible failure. Any help would be helpful!!
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Old March 18th, 2013, 07:38 PM   #15 (permalink)
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[HOW TO] Odin any stock rom

Hi nelson welcome to the forums.

Follow that link and it will give you instructions for installing gingerbread or ICS. What kind of failure?
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Old March 18th, 2013, 10:23 PM   #16 (permalink)
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Been to stock many times and it seems gingerbread is the best for our phone. Samsung abandoned us long time ago. My contract is over in 4 months and I will just give my money to google they at least keep your phone updated.
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Old March 18th, 2013, 10:36 PM   #17 (permalink)
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The ODIN instructions work fine. They fixed my Samsung splash screen lockup issue. 4.0.4 is working fine on my other S2. I never experienced 4.0.3.
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Old March 22nd, 2013, 11:32 PM   #18 (permalink)
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Hello! I'm new to the forum. But I am stuck on Odin. I have downgraded my S2 to gingerbread 2.3.6 before & for some reason now it is not allowing me too. Odin just keeps on saying failed. I'm doing everything I did before also. Could anyone help me with this? Thanks!
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Old March 23rd, 2013, 06:44 AM   #19 (permalink)
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Quote:
Originally Posted by KatMills View Post
Hello! I'm new to the forum. But I am stuck on Odin. I have downgraded my S2 to gingerbread 2.3.6 before & for some reason now it is not allowing me too. Odin just keeps on saying failed. I'm doing everything I did before also. Could anyone help me with this? Thanks!

Welcome to the forums Kat.

Did you get it to work?
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Old March 23rd, 2013, 08:07 AM   #20 (permalink)
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Hello! I'm new to the forum. But I am stuck on Odin. I have downgraded my S2 to gingerbread 2.3.6 before & for some reason now it is not allowing me too. Odin just keeps on saying failed. I'm doing everything I did before also. Could anyone help me with this? Thanks!
Yeah, sometimes Odin can be ornery. Try this. Unplug everything. Reboot the phone, reboot the PC and try again.
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Old March 23rd, 2013, 08:28 AM   #21 (permalink)
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Default Re: How do I downgrade from 4.0 back to 2.3.6?

No offense. But you really don't know what you're missing if you would just upgrade to 4.0.4 instead of taking a step backwards to 2.3.6.
Just my two cents.
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Old March 24th, 2013, 09:14 PM   #22 (permalink)
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Quote:
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No offense. But you really don't know what you're missing if you would just upgrade to 4.0.4 instead of taking a step backwards to 2.3.6.
Just my two cents.
2.3.6 is much much better than 4.0.4. If it is stock ICS it is absolute trash. I do not know whether it is because of Touchwiz but things really do not work correctly. Games lag, the entire system is sluggish and force close are regular ocurrances and yes that is on a stock rom. When I had ICS there was no day in which I did not restart my phone at lease once but now with gingerbread I can go a week or 2 without the need for a restart.

Maybe completely pure android ICS was decent like the one on the Galaxy nexus but with these skins it is absolute garbage. Samsung is a horrible vendor which does not update it's devices gaping security holes are ignored because they want to make you buy the next device even though you have just bought the phone. They are turning out to be worse than apple and when I switched from the Iphone I didn't think there was anything worse.

Just my 3 cents : ) !!!!
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Old March 24th, 2013, 09:16 PM   #23 (permalink)
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Default Re: How do I downgrade from 4.0 back to 2.3.6?

Quote:
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2.3.6 is much much better than 4.0.4.
I think you had something else going on. I doubt many agree with you.
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Old March 24th, 2013, 09:59 PM   #24 (permalink)
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Default Re: How do I downgrade from 4.0 back to 2.3.6?

Quote:
Originally Posted by sleedeane View Post
I think you had something else going on. I doubt many agree with you.
I have to agree, cm 10.1 blows GB away. I don't reboot my phone unless I'm flashing something. I'm running the latest nightly using cerux kernel 1.46 latest gapps and it is simply worlds better than your GB. I don't lag
Period.
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Old March 24th, 2013, 11:38 PM   #25 (permalink)
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Default Re: How do I downgrade from 4.0 back to 2.3.6?

Quote:
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I have to agree, cm 10.1 blows GB away.
Then you're sporting 4.2.2 JB, another good upgrade.
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Old March 25th, 2013, 06:56 AM   #26 (permalink)
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Default Re: How do I downgrade from 4.0 back to 2.3.6?

Yup the new nightlies are rock solid. Mind you I don't us BT so I don't know if that's fixed yet. But GPS works fine.
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Old March 25th, 2013, 05:06 PM   #27 (permalink)
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Quote:
Originally Posted by alextop30 View Post
2.3.6 is much much better than 4.0.4.

Just my 3 cents : ) !!!!

Try going to recovery, wiping everything, then use Odin to install the last update that came out a couple months ago.
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Old May 26th, 2013, 08:51 AM   #28 (permalink)
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Angry

Hi,

I have an sony xperia U and a about a month ago I upgraded it to android 4.0
But my phone has become really slow so I want to downgrade it to the original version.
I have tried several attempts and it's really hard to find a methode that works, and when I found one, the programs were al filled with virusses or giving errors (and yes, I read and did each step exactly like described)
So it's driving me crazy!

Please does someone know a solution that works

thanks!
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Old May 26th, 2013, 08:52 AM   #29 (permalink)
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ow and the specific type is an st25i
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Old May 26th, 2013, 09:06 AM   #30 (permalink)
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Welcome to the forums lyneke

See if this thread helps you any. It first talks about downgrading. Also check our xperia U forum.
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