New Firmware Version 1.02.12 for the My Book World I & II (10/19/11)

WD Legacy Products Other Network Drives
97

i have a question:

when updating the firmware, will the contents of mybook be erased? how do i go about doing the update please in a way that will not do anything to the data on the drive?

this is obviously very important because since installing Lion i have not been able to reach my time machine backup that is on my wolrd book.

thanks 

amir