The patch was written by @comex for jailbreakme3, I modified it to make it work with corona.
I've developed this patch on my iPhone 4.
It needs to be adjusted to the other devices and being tested.
Since I do not own an iPad nor an iPod, I cannot do that myself. Hopefully, MuscleNerd will do the rest of the job and will release the package soon.
For xBooks users:
When this fix will be released, the xBooks fix will be obsolete and you'll need to remove it and reinstall iBooks.
Happy reading !