Actually, I would like to see instructions that tell us how to avoid data loss like texts, pictures from texts, purchased applications and whatever else is on the phone when we perform the update.
How do we back up the contents of the phone? I am running Windows 7 Home Premium 64 bit version and have never gotten HTC Sync to work with my phone in any way other than being able to set up the memory card as external storage that I can transfer files to and from.
I can say I had a D1 when the Froyo update came down and I lost nothing when I let it upgrade.
As another poster said, Astro rocks for backups. I do a a backup and copy the files to my computer for extra protection.