Nokia N85
Software downloading

I have purchesed n85 in march but it is not working properly i contacted to service center mandi himachal but they were unable to load full software, i have visited twice but they says that the new version of nokia n85 is not available, they formeted twice but the set is still slow, and without engage soft ware i have alredy submitted my complaint to you but no responce received yet my mobile no is 9805853961 & imei is 356376021340132