I took my back up skycontroller 2 out of bag last night and did update....started skycontroller2(no drone),hooked up phone,freeflight pro starts,hit Menu button in left upper corner ,scroll down and hit Check for updates,Skycontrolle 2 download and install update,hit install,in next screen there is big white circle,hit install and circle slowly turns green,once over it says Ready for update,hit Back in upper left corner and i saw again Skycontroller 2 but this time it said Update to 1.0.9v,hit that,goes back to screen with circle that slowly turns green,power button in skycontroller is flashing blue and few minutes later update is done.....
in general i wouldnt do updates with tablets,in a past my updates would stuck almost everytime and mostly with android freeflight version of Freeflight Pro....latest android version is FreeflightPro 2.5.7,latest version ios for ipad/iphones is FreeflightPro 2.5.4,latest Skycontroller 2 update is v1.0.9....
i had much more luck updating when using my ipad so if you have ios device in house,try that first