If you want Unleashed R500 you should purchase 9U1 (Unleashed) part number,
rather than 901 (regular) AP part number.
Re-flashing firmware between Solo AP and Unleashed will change AP function, but if you ever
need an RMA you will get the same type AP you purchased (9U1 or 901).
Yes, you need a support contract to download firmware, either kind. Start here:https://support.ruckuswireless.com/contact-us