Originally posted by 10ThousandFists
This is a very very loose FAQ. Those of you with a Droid X, these instructions will not work. It will only bootloop your phone. Not all Android phones follow this procedure. Please use caution when using this guide.
Originally posted by another user
You will most likely have to wipe when upgrading to a custom ROM (of course, we’ll do a full backup first) but once you’ve installed it, any regular updates are usually applied right over the current version and don’t require any wipes.
Remember, all your Google contacts sit in the cloud and will be sync’ed right back as soon as you boot the new ROM and log into Google.