I just downloaded and installed v29 (4.4.2), upgrading from v19 (4.1.2). I followed the instructions of formatting /system, /preload and /cache and the Dalvik cache. Now the phone turns on but is stuck in the booting screen. I can still access CWM but reinstalling v29 hasn't helped. Hopefully I can recover from this situation? Thanks in advance for your help!
Update: I just formatted the /sdcard and reinstalled the rom, but phone is still stuck on the booting screen.