Last week we reported that Chinese hackers were able to downgrade 4.11.08 to 4.10.01 baseband. However it turns out this is exactly being done only by "insiders" .
Consequently no hackers or else technology are intelligent to bypass Apple's fixed security of allowing baseband 4.11.08 to be downgraded. Apparently, the only real as well as the most important loophole here is people.
We have no idea how secure these Apple SHSH servers are, but some "insiders" are able to get access to SHSH servers and perform a "Clean Downgrade", without any hardware or baseband chip modification.
|Downgraded iPhone 4 to 4.10.01 baseband|
|Downgraded 4.11.08 to 4.10.01 baseband|