Error Codes "2005" & Error Code "10"

Hi All,

I am posting m 1st discussion on this portal after somuch useless effort at my own end

I am using iPhone 3gs 16 GB newbottom with baseband 6.15.00. I was using it with ios 4.3.3 but unfortunately i get updated it with custom ios 5.0.1. My phone got succesfully restored but not activated. when phone setups it gives me error in itunes "Sim is not installed in iphone you are attempating to activate".

i am a new used to iphone so not clear about how to get my phone activated. then i restore my phone back to 4.3.3 but after restore it stuck up in DFU mode and never boot. I booted it threted with redsnow but doesnt start normally.

now when i again wanted to update it to latest ios in itunes 10.5.1, it gives me error code 2005 that was fixed by using itines 10.4.1. but in 10.4.1 i found another error code "10" that doesnt come in ituned version 10.5.1. now both itunes version have one error code. if i use 10.5.1 i got error code 2005 but in 10.4.1 i got error code 10.

please anybody help me out to get the solution mainly to restore to 4.3.3 and activating 5.0/5.0.1

hoping best reply