at this time you cant, with the OS that comes stock on all sprint BB's are opperating 4.3 however when 4.5 is released by sprint MMS is going to be a part of that, but at this time you cant,........the 4.5 OS update hopefully will be out sometime soon.
best bet is just send VIA attachment on email for the time being
4.5 is released but each provider has a slighty different version and has not been released by sprint as of yet, it is possible to ugrade from Rim directaly but I am really not sure how to do that
Posted from my CrackBerry at wapforums.crackberry.com
Isn't there a 4.5 already released for the 8330? Or is there a separate one to be released by sprint?
Posted from my CrackBerry at wapforums.crackberry.com
Yes there is a 4.5 already released for the 8330. I upgraded my BB to it last week. I believe it will work for all carriers as long as you delete the vendor file when you install it.