09-11-2011 11:00 PM
hi
call up Tmobile and they will guide you. or you can use these steps:
1) download blackberry desktop manager :
http://support.t-mobile.com/docs/DOC-1402
2) backup your information :
http://support.t-mobile.com/docs/DOC-1196
3) run application loader to update software to 6.0 :
http://support.t-mobile.com/docs/DOC-2072
good luck
pls like my message if it helped you
thanks