You are using rel-35.2.1 BSP version and latest one is already rel-35.5 version.
(if you want to upgrade more, then there is rel-36.x version).
Installing new BSP means put the board into recovery mode and then flashing software from another host PC.
All of the installed things will be erased.
The point here is rel-35.2.1 is already a software that was released 1.5 years ago. It is actually pointless to check issue on that. Please use new software version.