Of course all Droid3 modders like the security of a good SBF. Sbfing is the number one way to clean up your phone or unbrick it. A new SBF has been released. The Sbf of the .906 firmware can be flashed in a few different ways. Apparently this version has been modified so that you can revert to .890 if you need to. You could flash it the good ole fashioned way by using RSDlite, or you could flash it the new fangled way via the One click method. However you prefer to unbrick your D3 be sure to download the file from the source link below!
Via XDA