iosonator

Where has this been posted? As far as I know there is no solution as of yet for "error -1" on iOS 10.3 and up, only previous versions.

I don't see any reference to the error in that guide. I also don't think the issue is that the hacks aren't "working" properly, which is one of the main things the guide is providing solutions for, the issue is that there doesn't appear to be a way to restore backups from the program in iOS 10 (although it seems to work if you do it via itunes), especially in iOS 10.3 and up (which has a new filesystem) where there doesn't appear to be any way to restore the files you replaced.

I think the issue is that iOS 10.3 and up has a new filesystem and even if you restore a backup using iTunes the program is still saving the changes in a previous format, at least that seems very likely, and therefore iTunes has problems restoring it afterwards. Whether the same applies for versions of iOS 10 that came before the new filesystem is hard to tell but based on the comments in this thread it seems like you can restore using iTunes on iOS 10 as long as it's before iOS 10.3 but if you have iOS 10.3 and up then it doesn't work, probably due to the new filesystem. I have e-mailed the developer about it and I suggest anyone else on iOS 10 with problems does the same and maybe they will update the program eventually.