Dear friend ' gulf region M series doesnt support secure folder app' you may try to check for 3rd party apps from google play store to get the required feature

restart the deviceboot the safe mode ( when you restart and get samsung logo hold vol down)then when you start you will be on safe modetry to update in safe mode, if the issue persists the only option maybe factory reset.notice to remove the safe mod...

it shall not based on product compitabilty .

my dear, you are pooking for few gigs while you are able to use SD card, just transfer pics and videos to SD card this will give u alotta of space

i hope so ((^_^))