Update Samsung GS2 to official android jelly bean 4.1.2
FULL GUIDE - http://www.wiredmash.com/samsung-gala...
1. Samsung Galaxy S2 i9100 XWLSD Firmware -http://www.hotfile.com/dl/193268223/0...
2. Odin 3.04 - http://samsung-updates.com/Odin307.zip
3. Samsung Kies - http://www.samsungapps.com/about/onPc.as
Guide: Install and Flash the Official Samsung Galaxy S2 Jelly Bean 4.1.2 XWLSD Firmware
Want to be updated with the latest XWLSD Jelly Bean Firmware build from Samsung? You can easily do so simply by following these instructions below.
Note: This won't work on AT&T, Verizon, Sprint and T-Mobile versions of the Samsung Galaxy S2. The device has to be the international unlocked version of the Galaxy S2.
1. Download the Spanish Firmware (I9100XWLSD) V 4.1.2 (Jelly Bean) and extract it to a folder. You would need .TAR file to flash your Samsung Galaxy S2 device.
Download Odin 3.07 and run it. It's best that you have Samsung Kies already installed as this will provide communication between your Samsung Galaxy S2 and your computer.
2. Power Off your Samsung Galaxy S2 i9100 and set it in Download Mode by pressing Volume Down + Menu Button + Power Button for 10 seconds.
3. Once in Download Mode, connect your Micro-USB cable to your computer and press Volume Up to activate Download Mode. A box will appear in Odin signifying a successful connection.
4. Click PDA in Odin and find the contents of the I9100XWLSD.zip file you extracted earlier on We're looking for the following filename "I9100XWLSD_I9100FOPLS4_I9100XXLS8_HOME.
5. The flashing procedure would normally last five to ten minutes. The device would automatically boot.
6. Note: If you are coming from a Custom ROM or Kernel it would usually get stuck at the Samsung boot screen. This is normal due to platform issues. Nevertheless, remove the battery from the Samsung Galaxy S2 and disconnect all cables. Insert the battery back in and instead of turning it on, access Recovery Mode by pressing Volume Up + Menu Button + Power Button for 10 seconds. The screen would flash twice. Once in Recovery Mode, do a Wipe Data/Factory Reset and Wipe Cache Partition. Lastly, reboot your phone and everything should be in working order.
7. Every thing will be fine if u follow the Guide.
*NOTE* I am not responsible of any loss or bricking your phone