I just got 1.9.11 installed and already notice things are NOT well. I have many epub on my micro-SD, and things were okay on 1.9.10. But now when I try to turn pages, after a page or two, the book will be closed. And all the books on the micro-SD will not show up in KT. I have to either power-off then power-on, or re-insert the mirco-SD card to get the books back. But once I start turning pages the same problem happen again? Now how can I rollback to 1.9.10? I cannot keep rebooting KT one page at a time
Follow-up: Now I also notice that after it "dismount" the microSD card, KT won't go to sleep anymore. I have it set to sleep after inactive for 10 minutes, but if the microSD got dismount, it will wake up right away and HUNG (the touch screen become unresponive). I have to power it off when that happen.