I am having the same prob of hanging @ loading screen
From what Ive gathered (correct me if i wrong please) i need to use ciosx20b to install 249 with base 57.
however when i scroll thru what IOS to use at the start of the app (I presume that is what is meant by the "base" term) I dont have IOS 57 as an option to use. I have 53-56, but 57 never comes up, leading me to think I dont have the initial IOS 57 installed so I cant do the fix to 249 without having 57 installed beforehand.
So if the above is right, can someone link me where to get ios 57 so I can proceed?
when I run ciosx20b and use 249 it just freezes... dunno if thats important or not but throwing it out there....
any help at all would be really appreciated