Can't restore, filesystem isn't mounted.

[cuj]

Hi, I would like to dualboot my iphone, but I seem to face an error, when I try to dualboot my phone after divise downloading the ipsw, it throws an error "Can't restore, filesystem isn't mounted." so is there any method to fix the issue? thanks, you can have a look at the error below.

[Visualwit]

What Version Are You Trying To Install?

[Visualwit]

I See You Are Running iOS 14 With It's SEP Is Not Compatible With iOS 10, 11, & 12, It's Not Possible, Try Dualbooting With iOS 13 Instead!

[eliekh05]

same issue but im on iOS 12.5.5 and installing iOS 10.0.1