updates and downloads

[spowers]

Hi, I am new to this forum and I need some help with my htc 6800. Lately it has been acting up, it freezes, it locks up and i am constantly roaming. All this happened when i did the latest update given to me by alltel. They said that updates was suppose to help receive text messages and picture messages better but it seems to have done something else to my phone.
Also, I did hear that they had several cool download features for this phone such as the ability to look like the iphone. Can anyone help me with this as well. Thanks for your time and patience, I am not the most tech advanced person but have some (just a little) brains.