Have a same problem, i just clicked to update.
But i dont understand how did you fix it.
I have two SD cards.
One for my license games, when i insert it just load to "stock" and have all my games. On this SD i made this stupid update.
Another SD card have an EmuNAND i load it for my other games...
I get what they were trying to say but what the ad actually says is "we tried to cram a ton of features into the iPad but all of them got irreparably mangled
in the process."