Tried Razrs-Edge and Motohelper method. Installed latest drivers. Have phone in debugging mode. MTP Checked. Allowed Unknown sources. Tried it on Windows 8 64bit and Windows 7 32 bit. Motohelper says Rooting...then nothing. Razrs edge says waiting for device...then nothing. Do not see ADB in device manager unless I boot in Safety Recovery mode and connect phone. Rooted all my previous droids without any problems...
Trying to back up phone to make image and transfer to replacement bionic I received. Wouldn't need to root if there was a way to make a complete backup without rooting.
Sigh
im having the same problem as you.
i got a replacement phone and i haven't been able to root for for the last 3 weeks ive tried everything but still stuck at "waiting for device"
the one time it got past that it was stuck on deamon tools started for almost 35 minutes without anything happening.
ive tried everything drivers,usb debugging,usb cable,etc.. im no newbie to rooting nor flashing roms i know what im doing except this time i have no clue whats going on
Suffering with my Bionic since Sept 2011.
Got the new phone rooted. Razrsedge worked fine. It doesn't help me, as I wanted to make a full back up of my old phone. Ended up using MyBackupPro to get my apps and data over, but had to reset all my other settings.
I would suggest, if you haven't already, do a factory reset on the new device and try to RazrsEdge it again. Seems like installing apps or something prevents RazrsEdge from detecting the phone.