T-Mobile has posted instructions on how to download your contacts and restore them to your Sidekick. Basically you log in to your account at my.t-mobile.com and a new link will appear on the front page, “Restore your contacts”
Once you click on the link to Restore your contacts, it’s a 2 step process to fully restore contacts. Download the contacts to your computer, and then upload the downloaded file to your Desktop Interface. It will probably take a few minutes for them to appear on your device after this.
This is only the first phase of recovery, as T-Mobile, Danger and Microsoft have stated that the remaining PIM data (Calendar, Notes and ToDo’s) as well as Photos saved to the backend and not your SD card will be returning shortly. Perhaps through a similar method.
Let us know in the comments how the recovery goes and if you were in the group that lost all their contacts, or some of them. We’re curious to know!