[Q] help pls internal storage problem topic

when i root and force no encrypt my device .. and when i try to install the new 5.0.1 lrx2q to cc .. i doesnt update .. in twrp shows
Unable to mount storage .. so i remove the root and the no force enrcypt .. cause they said that if you unroot it youll update with out
problems to 5.0.1 .. so i download the wugs toolkit and flash the 5.0.1 .. when i turn on the device .. MY GOD !!!
When i update the g apps .. it says there is insuficient device !! :( !! now can anyone help me ! pls im still looking for solution !!