Check if the firmware you want to use is the right one for your SAMSUNG P550 Galaxy Tab A 9.7". The table below contain all the useful information you might need for your software. The firmware posted here was designed for GALAXY Tab A for T555CZCS1BRG1 PDA version and T555CCHN1BRG1 CSC code. This is a dedicated T555CZCS1BRG1 bootloader type and 2285034248 CRC software. Android Marshmallow 6.0.1 comes with Android Security Patch Level. Please also make sure if the 10290588 changelist and build date are correct for SAMSUNG P550 Galaxy Tab A 9.7".
If the specification posted for the software is correct and you want to use the CHN OPEN software from China, simply tap on the download button. Size of all flash files posted is 1.13 GB.