Samsung Galaxy S Series

[thesoupdragon]

How to ROLL BACK your Firmware

to Official Vodafone 2.3.3 for SGS2

 UPDATED 21-5-2012

Files to Download:- 

Odin3 v1.83.exe | 0.4 MB - Flashing software

I9100BUKG2_I9100BUKG1_I9100VODKE2.rar | 316.4 MB- Gingerbread 2.3.3 (VOD) Firmware

I9100BUKJ3_I9100VODKI2_VOD.zip Gingerbread 2.3.5 (VOD) Firmware

I9100BULPC_I9100VODLP8_VOD.zip ICS 4.0.3 (VOD) Firmware

GUIDE:

Print or Copy instructions for reference

1. Unzip container files to extract .tar files. Save in a Folder on your Desktop

password is samfirmware.com

2. Backup all your Phone's content.

3. Open phones Dialer & Type *2767*3855#  to Hard Reset the Phone.

    This will also wipe the internal SDcard.

• You must have Samsung Kies installed but NOT running.

4. Run Odin3 software.

5. Click on PDA Button, Browse to your Desktop Folder and choose the Firmware .tar you want to use.

(For example - I9100BUKG2_I9100BUKG1_I9100VODKE2_HOME.TAR)

• Change NO other settings!

6. Put Phone into Download Mode by turning phone off (wait 30 seconds) - Press and Hold -

• Volume Down + Home + Power at the same time!
• Let go when the Galaxy S II Logo appears.

7. Press Volume up to confirm Download Mode.

8. Connect USB lead to Phone and to PC.

• Allow USB Drivers to install

9. Click Start - DO NOT UNPLUG THE PHONE! 

• When the Phone Reboots you can disconnect from PC.

10. Skip through the setup process.

11. Perform Factory Reset. In Dialer type: *2767*3855# 

• When phone restarts, follow setup as normal.

DONE!

 Guide written by thesoupdragon.

DISCLAIMER:

I assume no responsibility or liability for any Damage caused to your phone, internally or externally, by following this guide.

[sakan]

@TSD
Do you need to put the phone on "USB DEBUGGING" mode before you connect it to Odin or that's not needed anymore?

[thesoupdragon]

Hi Sakan,

USB Debugging is not needed to flash with Odin.

[sakan]

Thank you TSD.

[lock471]

can you use this method to put any official firmware onto your phone thanks

[thesoupdragon]

Hi lock471,

Yes this is the Basic flashing method. I would only recommend using Official Firmware, as your phone has a Counter that logs when Custom Firmware has been applied.

Official Samsung or Vodafone Firmware does not affect the counter.

TSD

[mogue81]

hi ive been trying to de brand my s2 but cant seem to get rid off the voda bloatware, have 2.3.5 at the minute but am trying to get the latest uk firmware on, ive followed your instructions above just changed the firmware but it doesnt seem to work even thou odin is sayin sussesful? Any help would be great.

[Northern-dj]

Sounds like the file is not right that you have downloaded

That is the only way 2.3.5 would stay on

How fast does it do it ?

If its very fast then somthing is wroung and you need to check the file you have down loaded

[mogue81]

very fast downloaded from xda

[Northern-dj]

Thats the problem the files are corrupt

Use SamMoble for Roms

But if your de branding you need a three file the right one and re-partition ticked

But the rom you have down loaded delete it

I would use the link soupdragon put on and go back to 2.3.3 Vodafone just to get used to what happens

[mogue81]

no probs will try that then cheers

[mogue81]

cant find the firmwares for the s2 on sammobile could you point me in the right direction?

[Northern-dj]

in the search Type GT-I9100 that will list all the firmware

You will have to register

A warning tho

You do this at your own risk

It will Void your Vodafone warrenty if its not there roms, But Not your Samsung at all the roms on there are Samsung Roms if they Have the Kies Logo Next to them

[mogue81]

cheers dj ur a legend

[thesoupdragon]

@mogue81

N-dj has given you great advice there!

If you follow My guide exactly then Kies will be able to update your Phone to Official Unbranded (XEU)

firmware.

Good luck and let us know how you get on.

[mogue81]

is your version not vodafone 2.3.3??

[Northern-dj]

The Current Version of XEU phones is 2.3.4 to be updated soon to 2.3.6

Vodafone are using 2.3.5

2.3.3 is what All S2 phones started on

[polarisn1]

Greetings,

I recently upgraded to the 2.3.5 over the airwaves, and now the damn phone is stuck constantly rebooting. I cant do anything with it because I dont even get enough time to go into my apps drawer or anything before it restarts. 

I had it running fine for two days on the update, but I wanted to use bluetooth yesterday and bam, it started rebooting constantly.

My question, can I use odin to flash this rom on the phone to revert back to stock? I cant call any numbers, so I wouldn't be able to follow your instructions exactly. Is it important to dial those numbers??

Please let me know, having a dead phone sucks.

Cody

[thesoupdragon]

@polarisn1

That's exactly what this is for... 

[polarisn1]

Thanks for the reply!

But, Like stated, I cant call any numbers. When the original poster states that dialing the number does a "hard reset" of the phone, is this the same as a "factory reset?" Im assuming so, but I just want to make sure. The terms might be different, but the idea is the same. Im from the US and rooting and stuff over there we call it a factory reset. 

If this is the same, then I will lose everything on my phone then, correct? That sucks. I was hoping this would just act like an update, not a complete wipe of the system...

Let me know asap so I can put my phone under the knife!!