[HOW-TO] Come back from JB to GB - Galaxy Ace II Android Development

Welcome . New thread with tutorial how to come back from JB to GB .
First you need Odin to flash your phone . If you're here you propably have got one . I recomend 3.04 or higher or 1.86 version .
1.Connect your phone to PC with Odin Flash Mode (home+ volume down + power during start )
2.In the Odin select PIT , CSC , PDA Files from pack :
http://disk.yandex.com/public/?hash=CXISs198rZIJtpzWXood+waVEXcxGbW4T1iWMkicox0=
http://d-h.st/AZN
It's only one rom with all working files i found in the internet .
It's Rom for Russia (SEB) and will change your region code .
3. Flash
4.Welcome on GB again . For sure to the time of full release of JB .
PIT File only :
https://www.box.com/s/1e4su0r4h3n0xl5ae8r7
(You can try to flash one file rom . It's can work . Maybe . But more safe metod is using full SEB Rom )
FIRST YOU NEED TO FLASH USING SEB ROM IN POST , THEN ANY GB YOU WANT !
Q and A
1.Did I can flash any GB ROM using one file rom and the added PIT File ?
A:No , you can't . First you need reflash your phone using russian 3 file rom , after this you can do everything you want .
2. It's working ?
If you know what is Odin , how to flash and doing everything like in this how to , for sure this is working .

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It contains CSPA, EFS, UMS.
What for ?

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Is full GB firmware applicable?

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Dr01nE said:
Is full GB firmware applicable?
Click to expand...
Click to collapse
It's for sure working . Because this rescue , me after JB flash . If you will install first this Russia ROM then you can flash Rom for your localization without problems

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Using the above linked PIT together with a firmware for Europe (so starting with XX...; exactly the XXLL2) didn't bring me back to GB. Flashing worked fine, but afterwards the device had a bootloop (stopped at Samsung's logo) and booting into <3e> (Samsung's recovery OS) wasn't possible.
So I'll try with the "russian" firmware now.

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how is this different form previous stock versions?
Hi friends,
Is there something you changed in the PIT files for this?
What will happen if I have JB and I take a stock UK LL2 f/w from samfirmware and flash it?
thanks in advance...

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jeev_one said:
Hi friends,
Is there something you changed in the PIT files for this?
What will happen if I have JB and I take a stock UK LL2 f/w from samfirmware and flash it?
thanks in advance...
Click to expand...
Click to collapse
Your phone will stuck on Ace 2 Screen .
First you need to flash using Russian Rom then you will be able to flash using UK Rom with change the regio code .
No , PIT File is original without any mods .

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mann you r the best!! big thanks! +1

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michal_ag said:
Your phone will stuck on Ace 2 Screen .
First you need to flash using Russian Rom then you will be able to flash using UK Rom with change the regio code .
No , PIT File is original without any mods .
Click to expand...
Click to collapse
thanks....also I've just downloaded PIT creator from
http://forum.xda-developers.com/showthread.php?t=1916936
Do you think it will help?
How do i create a UK ROM PIT for myself and avoid "falling into it" ?
regards,
jeev

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@jeev_one
If I'm not mistaken,the pit file is the same for the entire Europe.
The problem is UK rom which does not contains all files needed.
Only Russia ROM contains all files needed to downgrade to GB.

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jeev_one said:
thanks....also I've just downloaded PIT creator from
http://forum.xda-developers.com/showthread.php?t=1916936
Do you think it will help?
How do i create a UK ROM PIT for myself and avoid "falling into it" ?
regards,
jeev
Click to expand...
Click to collapse
The Problem isn't PIT File . It's universial for GB Roms . Problem is that you need to use 2 file ROM . Only one I found in the internet is this from Russia . Faster way is to install SEK Rom from first post . Then Reflash UK Rom and change Regional Code using *#272*IMEI# .

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michal_ag said:
Welcome . New thread with tutorial how to come back from JB to GB .
First you need Odin to flash your phone . If you're here you propably have got one . I recomend 3.04 or higher or 1.86 version .
1.Connect your phone to PC with Odin Flash Mode (home+ volume down + power during start )
2.In the Odin select PIT , CSC , PDA Files from pack :
http://disk.yandex.com/public/?hash=CXISs198rZIJtpzWXood%2BwaVEXcxGbW4T1iWMkicox0%3D
http://d-h.st/AZN
It's only one rom with all working files i wound in the internet .
It's Rom for Russia (SEB) and will change your region code .
3. Flash
4.Welcome on GB again . For sure to the time of full release of JB .
PIT File only :
https://www.box.com/s/1e4su0r4h3n0xl5ae8r7
(You can try to flash one file rom . It's can work . Maybe . But more safe metod is using full SEB Rom )
FIRST YOU NEED TO FLASH USING SEB ROM IN POST , THEN ANY GB YOU WANT !
Click to expand...
Click to collapse
Thanks man, you're great
I'm back to GB now!

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Cant download from your yandex link. Server cuts me off.

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Dr01nE said:
Cant download from your yandex link. Server cuts me off.
Click to expand...
Click to collapse
Try the alternate link (dev-host link). See the first post.
I downloaded from the 2nd (dev-host) link through orbit (download manager)

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If i flashed this firmware .. Can i flash another GB firmware ? E.g : Indonesia firmware ?
Maybe u can beat me in English , but im not sure that u can beat me in mandarin

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Rikxzdjz said:
If i flashed this firmware .. Can i flash another GB firmware ? E.g : Indonesia firmware ?
Maybe u can beat me in English , but im not sure that u can beat me in mandarin
Click to expand...
Click to collapse
I flashed this GB rom and then after that I flashed Polish GB rom. My phone is from Poland.
Sent from my GT-I8160 using xda app-developers app

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omer7 said:
Try the alternate link (dev-host link). See the first post.
I downloaded from the 2nd (dev-host) link through orbit (download manager)
Click to expand...
Click to collapse
I don't see dev-host link anywhere in this thread
Sent from my GT-I8160 using xda app-developers app

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michal_ag said:
http://d-h.st/AZN
Click to expand...
Click to collapse
Here it is...
Sent from my GT-I8160 using xda app-developers app

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It worked like a charm. Thank you so much. JB was draining my battery too fast.

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michal_ag said:
Welcome . New thread with tutorial how to come back from JB to GB .
First you need Odin to flash your phone . If you're here you propably have got one . I recomend 3.04 or higher or 1.86 version .
1.Connect your phone to PC with Odin Flash Mode (home+ volume down + power during start )
2.In the Odin select PIT , CSC , PDA Files from pack :
http://disk.yandex.com/public/?hash=CXISs198rZIJtpzWXood+waVEXcxGbW4T1iWMkicox0=
http://d-h.st/AZN
It's only one rom with all working files i found in the internet .
It's Rom for Russia (SEB) and will change your region code .
3. Flash
4.Welcome on GB again . For sure to the time of full release of JB .
PIT File only :
https://www.box.com/s/1e4su0r4h3n0xl5ae8r7
(You can try to flash one file rom . It's can work . Maybe . But more safe metod is using full SEB Rom )
FIRST YOU NEED TO FLASH USING SEB ROM IN POST , THEN ANY GB YOU WANT !
Q and A
1.Did I can flash any GB ROM using one file rom and the added PIT File ?
A:No , you can't . First you need reflash your phone using russian 3 file rom , after this you can do everything you want .
2. It's working ?
If you know what is Odin , how to flash and doing everything like in this how to , for sure this is working .
Click to expand...
Click to collapse
Thank you for this, will try as soon as download completes, JB is awesome but still unstable.
Edit: worked great, flashed Russian ROM first, then Polish LL8.
Notes:
- for other noobs like me, the CODE goes to PDA in ODIN
- as mentioned above, after you flash the second ROM, set the regional code by using *#272*IMEI# (generic EU is XEO I believe, it's what I had before I went to JB).