You can break it, but you might not be able to use it if the glass is shattered.
There is a semi-tether available for 5.0, not sure on 5.0.1 but I'd assume so. It allows you to reboot your phone if needs be and still have some basic functions and not a useless brick, I personally still wouldn't bother.
Or buy PKGBackup and save yourself the time and effort, I'm doubtful of an untether in a month but you never know.
i been told to run 4.1Yea 4.3 I tnink
How do you o about unlocking the iPhone 4 to any network ? its running 4.3.3