Don't be rude I know you're phone got corrupted; how did you fix the corruption without updating the phone that's what I'm asking. Because it is very bizarre that you restored a corrupted phone and it did not update, just delete the jailbreak. All the threads on this forum suggests that there is only one way to completely remove the iOS 9.3.3 jailbreak and that is to update. Restore don't work. (I know because I tried that)
If Cydia impactor does not work try using the jailbreak method u used when u first jailbreak the app. Use the pp desktop app.. After you connect your phone at the bottom of the screen u should see the blue jailbreak app click on it and it should install it on your phone. That is the only way beside Cydia impactor I know that will jailbreak your phone.