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but i think it mucked up my phone becuase after a couple of days iwent to go onto the internet and i was suddenly on plane mode and couldnt turn it off or on in the settings it was off
. factory reseted it same problem but not thinks it doesnt have a sim plus it has a circle with a line throught the midle at the not bar with no service sending it back to three uk might as well get a new one will arive tues 
You'll be waiting a while for an "official" release. It takes 2mins to flash with ODIN and is dead easy. This is a guide to help those who are not aware how to update to 2.3.4 I take no responsibility if you mess up your phone
1. Download 2.3.4 Stock Rom from Sam firmware here
Android 2.3.4 for Galaxy S II. - www.SamFirmware.com
(password when extracting is samfirmware.com)
2. Download ODIN if you dont already have it as you will need this. You can get it from here Multiupload.com - upload your files to multiple file hosting sites!
3. Reboot your phone into download mode. To do this first shut down the device. Then, press and hold the down volume key + home button + power button.
A warning will pop up asking you to confirm if you want to go into download mode (by pressing up) or if you want to cancel (by pressing down) Press up and enter download mode
4. Start up ODIN on your pc
From the 2.3.4 RAR file you have download, there will be 3 RAR files inside when you extract.
Click on PDA, Phone, and CSC, and choose the 3 files so it loads as below.
PDA - CODE_I9100XXKG1_CL349526_REV02_user_low_ship.tar
Phone - MODEM_I9100XXKG1_REV_02_CL1034110.tar
CSC - GT-I9100-CSC-MULTI-OXAKG1.tar
(here is a picture so you get the idea though the names are different)
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The ONLY boxes that should be ticked are Auto reboot and F. Reset time
5. Connect the phone to the PC via a USB cable and wait for the ID:COM box to turn yellow
6. Click start to flash the new firmware
(Do not disconnect the cable or turn off the device, it will reboot when it has finished)
If anyone wants to know how to root as well ill post info up, though guessing those who read this will either know how to do all this and would have done so, or will be to scared to attempt it even though its dead simple so im going to stop typing
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