[Problem] ibluetooth hang up

although searching deeply ,i cannot find a solution.

problem is

ibluetooth always hangs up or crashes before sending ,or even if it starts ,it hangs up at 10% or somewhere around 10-20%

fresh restore ,or firmware 2.X , 3.0 betas , setting up as a new phone (not back up) , turning off Wi-fi ... nothing helps

i'm wondering that ibluetooth is a 3G specific program because there were nothing left i havent tried to get it work

maybe 3G phones have different bluetooth hardware ?

(my phone is 2G , OTB 1.1.2 and bought in november 2007)

its just not a reliable application ibluetooth...

i solved almost every major problem with the help of this site since i have my iphone

but this issue is somehow seems the most disturbing one.

my phone is laggy because of jailbreak , youtube not working because of beta firmware .. Ok.

but what ever i do , i cannot get ibluetooth work even ONCE . tried 2.x versions , all beta(s) .. but hardware is ok , i can see the devices

nowadays ,the problem is just before the transfer starts ,the app crashes leaving me to the home screen.

in earlier versions ,problem was the interruption of the file transfer somewhere between 10-20% ..

i'm strongly suspicious about 2G ,because almost every trouble about this app is vitnessed on 1st gen. iphones (1.1.2 OTB ,november 2007)