"In order to get all these goodies, you need to have 'root'
access, or in other words FULL control over your phone as an
administrator. Understandably, T-Mobile has taken away root from
us; because one can inadvertently ruin the whole system.
"However, version RC29 had a very weird and curios bug: anything
you type on the keyboard is passed onto the command shell as root!
It literally interprets everything you type as command-line
operations. So if you type the word reboot in an SMS and then press
enter, your phone WILL reboot!
"Google quickly pushed out an update (RC30) to patch up this
vulnerability; but this same bug is the basis of almost all hacking
going on right now on the Android. So before you can really get
down and dirty with your phone, you will need to roll back to RC29
and "root your phone".