its worth it. i also had leaked 2.2, and downgraded to 2.1, and took 2.2 OTA update.
1) if ure on leaked 2.2, download 2.1 SBF from rootzwiki
2) SBF back to 2.1
3) you should have clean stock 2.1 now. go to system update and perform OTA 2.2 update
4) if phone goes into endless reboot cycle, go into recovery mode and delete cache/data.
required software to sbf
- SBF file
- RSD Lite 4.8 or 4.9
- Motorola drivers (droid x moto driver, should come with the phone i believe, otherwise, google and download)
you need to go to bootloader recovery mode. do it by holding camera button, vol -, and power button at same time.