Check if the firmware you want to use is the right one for your SAMSUNG I9100 Galaxy S II. The table below contain all the useful information you might need for your software. The firmware posted here was designed for GALAXY S ? for I9100ZSMSA PDA version and I9100OZSMSA CSC code. This is a dedicated I9100ZSMSA bootloader type and 3817386440 CRC software. Android Jelly Bean 4.1.2 comes with Android Security Patch Level. Please also make sure if the 1287495 changelist and 16/07/2013 build date are correct for SAMSUNG I9100 Galaxy S II.
If the specification posted for the software is correct and you want to use the CWT OPEN software from Taiwan, simply tap on the download button. Size of all flash files posted is 673.67 MB.