I've tried everything to upgrade my Sprint 8330 from 4.3 to OS 4.5, I deleted the Vendor XML before opening the DM, I uninstalled DM 4.7 and installed DM 4.5 and tried it that way but it still won't work. I've downloaded every available carriers version and tried installing it that way to no avail. Are there any other suggestions or steps that I might be missing??