Help Pendo Pad 2.1 upgrade to 2.2


Hello, I have a Pendo pad TPC7SLV and havn't been able to get any clear information about whether it was possible to do an upgrade from 2.1 to 2.2.
I'm hoping some one has quality information about this subject. Any pointers would be very much welcomed!
What I do know is that there is a firmware update but there is no information about what it will do for me and the changes made after the update.
Once again thanks in advance to any body offering their support