Does this still work?
I've tried a few times without success, nothing seems to change. My device is not jailbroken.
I saw in the other guide for iMazing that you can't add new files. When I compare the hacked rar file and the one extracted from iMazing, inside the Library folder the hacked one has "SyncedPreferences", but in my own this doesn't exist. Because of this, I followed the guide that says to make an editable backup, put the files in there, extract that version of the app, then import that back into the phone. Unfortunately this still didn't work for me.
Any tips?