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 T555XXU1CQJ5 PDA version and T555OJV1CQJ2 CSC code. This is a dedicated T555XXU1CQJ5 bootloader type and 2363787489 CRC software. Android Nougat 7.1.1 comes with 01.08.2017 Android Security Patch Level. Please also make sure if the 12258557 changelist and 25/10/2017 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 THR OPEN software from Iran, simply tap on the download button. Size of all flash files posted is 1.4 GB.