Just flash over the Feb21st version and kept KT747 Kernel.
Had to reinstall Gmail and Google Calendar from the play store again (they were gone after the flash)
Phone died on a call, just black screen and reboot.
Then Died again when I was looking at App Info for Calendar. (same thing black screen reboot)
Has been running ok since then. Tried calls and poking around doesn't seem to have any re-occurring issues.
Is there a flashable zip for the old camera? I see we lose Photosphere to gain HDR.
Still having DTMF issues. Unable to use automated phone systems, or connect my phone to google voicemail....