I used rooted 2.1 dx. (Only rooting, not remove bloat ware)
so, I restore .604 stock unroot image.
(using RSD tool, unroot instruction follow URL : Droid X)
And, I successfully recovery stock unroot 2.1 image.
then, update 2.1 froyo.
(Setting -> About Phone --> System updates)
Froyo update process successful too..
But, reboot DX, Motorola logo contidue appeaed.
Suddenly, i heard "droi~~~~d" boot sound.
Please refer follow youtube movie.
yep, actually phone boot end, and dx normally run, but screen appear is only "m logo" screen.
This activity not always appeard. i think 70% chance appeard,
Who have 2.2 OTA sbf files? Help me..
or Am i go to VZW service center? VWZ service center too far. :'(