Check if the firmware you want to use is the right one for your SAMSUNG I9200 Galaxy Mega 6.3. The table below contain all the useful information you might need for your software. The firmware posted here was designed for GALAXY MEGA for I9205XXUCNA3 PDA version and I9205OLBCNA2 CSC code. This is a dedicated I9205XXUCNA3 bootloader type and 1261675462 CRC software. Android Jelly Bean 4.2.2 comes with Android Security Patch Level. Please also make sure if the 2338537 changelist and 18/01/2014 build date are correct for SAMSUNG I9200 Galaxy Mega 6.3.
If the specification posted for the software is correct and you want to use the MM1 OPEN software from Singapore, simply tap on the download button. Size of all flash files posted is 1.26 GB.