Let’s start by saying, this is not officially official.  I wouldn’t consider any ROM to be official unless I saw it on the Sprint support site.  Regardless, that didn’t stop me from giving it a go.  Keep in mind that this is one of those “use at your own risk” scenarios.  DroidDog is not responsible for anything that happens to your phone.  Now that I have that out of the way…

The update is fairly simple.  The hardest part was finding a Windows PC that was in working order.  The update will delete EVERYTHING on your phone.  I recommend syncing everything to Google, or backing it up to your microSD card.  There are plenty of apps in the Market to help with this.  You won’t be able to backup some apps, as they are copy protected.  Don’t worry too much.  All apps should be available in the Market, once you’re back up and running.  Someone mentioned that the ROM has not been signed by Google yet, so some apps may not show up in the Market right away.

Here are the basic steps:

• Backup all of your data, contacts, emails, etc
• Download and install HTC Sync (for USB drivers)
• Download and run the ROM
• Follow the on-screen instructions
• Enjoy Android 2.1

I’ve uploaded a video documenting my installation.  The process does take about 10 minutes, so I chopped out the boring parts. It’s my first video for DroidDog;  Please be gentle.

Here are some screenshots

Source: AndroidCentral