That point seems to be spot on on theory. However, in reality, downgrading from 10.3 seem to have less issue. Perhaps the developer wrote the unofficial sysupdater or memchunkhax2 development most in 10.3?If anything being on a lower firmware is better since there are less CIA's to install reducing your chances of failure.
About the failure to downgrade from <10.2 to 9.2, it happens even to people I know that know what they are doing (one of those is @pakrett who posted that thread people visit to before downgrading). Update to 10.3 seems to do the trick.
Last edited by tivu100,