I upgraded to 4.2.2.184 off of blackberry.com and ever since then i havent been seeing the UMA icon on my phone at all when it says im connected to a network. Do you guess think i should revert back to what t-mobile had on my phone 4.2.2.180 that i have backed up or is there a way to fix? thanks in advance.

4.2.2.184 works with UMA just fine. Have you checked to make sure your certificates are still installed? Options >Security Options >Certificates. There should be two TMobile Certificates in there.