Not sure if this will work for yours but have you tried the rooting instructions for 2.1 android
There's a section for tutorial in this forum for it. The first part of the flashing process which uses rsd lite to install the Droid 2.0.1 sbf file actually erases the current version of android installed with all other info except for the sdcard and installs the 2.0.1 version from a blank phone. And from that point you can root to what ever you want but like I said I don't know if its possible with you device and not sure if will harm it but it maybe worth a shot. Also yours is an engineering version of the device so it may already be rooted or other ways to flash Roms that aren't known of. You might be able to search the Motorola site for developer software or something like that because HTC has a section of their site for their developers to download stuff for them to use so Motorola might have a similar site. Both are worth a shot if possible. Good luck.
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