Rogers Wireless is on a roll today with Android 2.1 updates. First came one for the HTC Magic+ and now it has released one for the Samsung Galaxy Spica. Unlike the HTC Magic+ update, this one requires a computer running Microsoft Windows.
The update should take between 10 and 30 minutes to complete.
Note: The update will replace the current ROM image and will erase all user data and programs on your device. Be sure to back everything up before you start.