iPhone 3GS 16GB New Bootrom, Never Jailbroken 
My iPhone 3GS has been making me very mad lately,
First, It says I have no Sim Installed. Next, It won't restore (I eventually got it)
Now, Don't even get me started about the AT&T Signal, 😡
I know this may be a problem in iOS4 but the randomly rebooting is another story. 😕
I will use the device for lets say 3 mintues, And then what??? I see the
logo, The phone seems to just restart every 3-4 maybe 5 minutes.And It does this in little spirts EVERY day!
I don't now if I should take it to the
Store and see what they can do, or Wait for a software update. My iPhone is virtually un-useable 😕