thrive will not update from 3.2

[AC Question]

Itll download the update and restarts with the android standing for about 25% of it, then it stops with android laying down with a red triangle over the stomach with an exclamation point in it. Its down loading 4.4 I think

 

[B. Diddy]

Welcome to Android Central! Is this an official update from Toshiba that is coming over-the-air? Or did you have to download it from a website and manually install it? Are you rooted or unrooted?