How do I configure 9810 BES personal email & BIS plan?

i have 9810 with os 7.1 Bundle 2108 (v7.1.0.746, Platform 5.1.0.546)with enterprise server which i some how manage o work with BIS plan of vodafone along with personal email setting added into it. but 2 days before i remove sim from my bb and insert it into other bb for internet. then i lost all the setting from my bb. i try a lot but now BIS plan not working & only enterprise server settings are available. please help
i have DM 7.1 in pc ...asking for downgrade to 7.1 Bundle 921 (v7.1.0.267, Platform 5.1.0.230) and 7.0 Bundle 1346 (v7.1.0.261, Platform 5.0.0.464)... can it work if downgrade to any 1 option given by DM....or any setting may help.. pls suggest

i purchase this mob which was manufacture in 2012 but new through online offer, i feel like cheating... still no reply ... some one...suggest..