I have recently updated to kitkat 4.4.4 recently via OTA. after that update the phone is hanging anytime like watching youtube,opening help menu and getting rebooted, i want to get back to 4.4.3 if no other go with 4.4.4 is available. i have already formatted the phone via recovery mode and lost all my data. initially when i was having 4.4.2 it was running great never hanged i had data full upto 12 GB out of 16 GB. 5-6 nos of HD games were there nothing was happening. But now i am very unhappy with nexus 5. in 4.4.4 when it reboot it hangs in between rebooting process i.e. at the google logo, four clour boot animation. nearly after 5-6 time reboot is done then it gets into homepage. kindly advise.