Kitkat said to be available via pc software upgrade tool.

VZW rep said: Oh wow! I hate to see you are having trouble with the update. The file sizes vary based on how the phone is updated because over the air updates (OTA) add what you don't have and the PC updates are removing and re-downloading software from scratch on the phone.
 
VZW rep said: Oh wow! I hate to see you are having trouble with the update. The file sizes vary based on how the phone is updated because over the air updates (OTA) add what you don't have and the PC updates are removing and re-downloading software from scratch on the phone.

If its anything like with IOS, ota will only update the new parts, where as downloading it via computer installs it fresh. Don't think that's how it works with android. But ota is over the air and its what happens when you check on your phone under software updates
 
please help me by saying that how can i upgrade my android software version 4.2.2 to 4.4.2 in kitkat via pc.with the help of broadband internet,not with phone internet connection.please reply anyone