Here's the history:
- I loaded the leaked 2.2 when it first became available and then deleted update.zip from the SDCard Directory. 2.2 worked fine.
- I reverted back to 2.1 in order to be able to get the OTA version of 2.2. Reverting worked fine.
- I rooted 2.1 using Universal Androot
- I installed the following apps: Titanium Backup, Root Explorer, DroidXBootstrap
- I did a nandroid backup using Bootstrap.
- Based on the reports I read today of the OTA 2.2, I decided to re-install the leaked 2.2
- Using Root Explorer, I moved su from Bin to Xbin directory in order to preserve root status.
- I connected the Droid X to my laptop and copied Update.zip to the SDCard. Note that my SD card if almost full - only 25MB left after copying update.zip
- I then booted, cleared cache and proceeded to run the update. Got the following messages:
- right at the start I got "E: can't open /cache/recovery/command"
- after the update ran for a bit it aborted and I got "error in /sdcard/update.zip Status 7"
- Booting got me into this battery icon and a second boot got me to clockwork recovery which rebooted me to a healthy 2.1.