wireless problem, need help

[firas_op]

Hi all
I have IPhone :
3GS
3.1.2
05.11.07
new bootrom
locked

My problem is new i don't know what happened Ihopne doesn't accept wifi password" can't joined to wifi .....)
but it is working with public networks and seved password ( I mean the networks i saved pass before problem).

I am afraid to do rest network settings because last time i did my Iphone died for long 4 months.

so what i have to do ?

thanks in advance

 

[firas_op]

I need help, any one can help me?