Full Guide: \rbr\rbrDownload: \rbr1. Official Samsung Galaxy S2 XWLSS Build - \rbr2. Odin 3.07 - \rbr3. Samsung Kies - \rbr\rbrGuide:\rbr\rbr1. Download the UKIreland XWLSS Firmware Android 4.1.2 (Jelly Bean) -- (I9100XWLSSI9100XEULS4XEU.zip) and extr it to a folder. You would need .TAR file to flash your Samsung Galaxy S2 device.\rbr\rbr2. Download Odin 3.07 and run it in the background. Its recommended that Samsung Kies should be installed as this will install the required drivers.\rbr\rbr3. Power Off your Samsung Galaxy S2 GT-i9100 and set it in Download Mode by pressing Volume Down + Menu Button + Power Button for 10 seconds.\rbr\rbr4. Once in Download Mode, connect your Micro-USB cable to your computer and press Volume Up to ivate Download Mode. A box will appear in Odin signifying a successful connection (for example -- COM3). Note: If it doesnt connect, you might want to check your micro-usb cable. Most of the time this is the reason why the connection doesnt establish.\rbr\rbr5. Click PDA in Odin and find the contents of the I9100XWLSSI9100XEULS4XEU.zip file you extred earlier on. Were looking for the following filename I9100XWLSSI9100XXMS2I9100XEULS4HOME.tar.md5. Give it a few seconds to check the md5 for any corrupt data. Click Start.\rbr\rbr6. The flashing procedure would normally last five to ten minutes. The device would automatically boot.\rbr\rbr7. 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.\rbr\rbr8. Once in Recovery Mode, do a Wipe Data (Fory Reset) and Wipe Cache Partition. Lastly, reboot your phone and everything should be in working order.\rbr\rbrDont forget to click the like button and subscribe button on top, it only takes a second.