Originally Posted by doogald

Well, I have never tried this myself, but I think that you could back up with Astro File Manager, remove the app from the market, and then restore the app in Astro. I think Astro uses sideloading to install apps when restored (so you have to enable that in (from home) settings->applications->allow third party installs. This does not include a market link.

(There is risk here: when you remove from the market, and if Astro does not restore for some reason, you'll only be able to install the latest version from the market. That said, I think that this is a reliable procedure.)

You do not need to be rooted for this, by the way.

Originally Posted by Lars

Yep use astro or es file explorer to back up the app. Uninstall the app the normal way. Then use the file explorer to side load the apk.