Finally the official Android 4.1.2 firmware is now available for download. If your S2 still not or cant receive the OTA update notification, then you have to manually download the firmware and flash into your Galaxy S2 via Odin. But, before start the flash firmware process, please make sure that you have backup all the important data. Then make sure that the firmware is compatible to your phone model and the firmware is support your region Network. You can check your phones model version at your phones settings> about device. The firmware I9100XWLSD is for UK, Italy, Germany, France, Australia, Netherlands, Belgium, Switzerland. Below is the summary of the firmware info:
Regions: UK, Italy, Germany, France, Australia, Netherlands, Belgium, Switzerland
For firmware version I9100XWLSD , XW is represent the region or Network code and here is the region code for your reference:
BD = Cyprus, Griechenland
BH = Mitteleuropäisch
CE = Niederlande, Belgien
CP = Finland
DB = Vietnam
DC = Thailand
DD = India
DT = Australien
DX = Indonesia, Malaysia, Philippines, Singapore, Vietnam
DZ = Malaysia, Singapore
JA = Süd Africa
JC = Algeria, Morocco, Nigeria, South Africa, Tunisia
JP = Algeria, Egypt, Iran, Iraq, Kuwait, Morocco, Nigeria, Oman, Pakistan, Saudi Arabia, South Africa, Syria, Tunisia, Turkey
MT = Schweiz
PO = Frankreich
XA = Österreich, France, Italien, Schweiz, Niederlande, England
XB = Dänemark, Schweden, Norwegen
XC = Portugal, Spanien
XD = Croatia, Czech, Hungary, Slovakia
XE = Bulgaria, Estonia, Kazakhstan, Latvia, Lithuania, Russia, Ukraine (Eastern Europe)
XF = Bulgaria, Croatia, Romania
XG = unter anderen Deutschland
XX = Österreich, Belgien, Frankreich, Deutschland, Ungarn, Italien, Spanien, United Kingdom (Western Europe)
XP = Europe (English, German, French, Italian, Spanish, Nederlands, Polski, Portugues and Turkish)
XW = UK, Italy, Germany, France, Australia, Netherlands, Belgium, Switzerland
ZC = China, Hong Kong
ZH = Hong Kong
ZT = Taiwan
Disclaimer: Manually flash firmware into Android phones may void the phones warranty and has the risk that cause your phone brick. Do not unplug the USB connection from PC during the firmware flashing process. Tutorial below is only for your reference and do it on your own risk.
Step 1: Download Android 4.1.2 I9100-ITV-I9100XWLSD-1359610229.zip , then unzip the file. You will get I9100-ITV-I9100XWLSD-1359610229 .md5 .
Step 2: On your computer- desktop or laptop, Open Odin 3.04 (Download Odin).
Step 3: Go to settings > Developer Options to enable your phone debugging Mode. Then turn off your phone and then turn your phone in download mode by press (Home+power+vol down) button.
Step 4: Connect phone to the computer and wait until you get a yellow sign in Odin.
Step 5: Add Android 4.1.2 I9100-ITV-I9100XWLSD-1359610229.md5 to PDA.
Step 6: Start flash, sit back and wait a few minutes.
Step 7: Galaxy S2 GTi9100 will automatically reboot once installation complete.