Windows Phone OS Update Query

[Phil Pense1]

Have an HTC Touch Pro phone made for Sprint. Believe the OS version is 6.1 Tried to update the OS over Wifi... Attempt lasted 5 minutes but failed. Result code was: 80072efd. Seeking guidance on how to proceed.

 

[MaryJane197]

The things i tried were downloading a new language pack. I downloaded a Dutch one and it let the download install. I have updated my phone 4 different times and had to do this each time. Sometimes it would work and sometimes it didnt.