I have tried to update the software on my ipad 2, 16GB, through itunes, but the update has not been completed and has frozen, what should I do?

Hey there alaili55,

Welcome to Apple Support Communities.

It sounds like you ran into an issue updating your iPad 2 with iTunes on your computer. Take a look at the article linked below and try the troubleshooting tips that it provides, which will resolve most issues updating iOS devices.

Resolve iOS update and restore errors in iTunes - Apple Support

Cheers,

-Jason

Hi Turn iPad Off Connect lead to USB on PC Press & hold power button on iPad Don't let go Connect lead to iPad keep power button pressed down until PC sees ipad Then wait for Restore . Cheers Brian