The update did not work for me:
1. Update notice came up
2. System said unmounting SD (why?)
3. Screen option popped up to install, install later or cancel
4. I picked install, but the screen locked up for a minute and then went away
5. System did not reboot
6. The new 605.2 version does not show up, but system says "already updated" but it is not (still shows 605)
7. Battery was at 90%
8. Shut down, removed battery, placed back in, rebooted and still nothing.
Messed up update, which BTW, I never had a problem like this before and using Android since the G1 launched.