Rooting will allow you to bypass the BN Registration - you may wish to follow the exact procedure in this thread over on XDA-Developer with many thanks to GabrialDestruir, the genius who developed this:

http://forum.xda-developers.com/show....php?t=1132693

This works very nicely for rooting - I would read the entire thread carefully, then download TouchNooter 1.6.2.4 and have a go - it worked for me!

BTW, there is very little probability of bricking the STR - you may also want to try the following:

Hold down the two lower page turn buttons and the power button - let go the page turn buttons after five seconds - this will put the STR into complete recovery and reset to factory default condition - here's the thread, again on XDA:

Recovery.
Turn off.
Push power button and hold, then press and hold bottom left and right page buttons for 5 seconds.

Image posted in this thread:
http://forum.xda-developers.com/show...6&postcount=40