Sprint → Where to buy Franklin U770 USB?!?

I've been looking everywhere to get one of these U770 USB modems so I can use it with my MBR1000 with Millenicom's BYOD service..

If anyone knows of a place to get one, please post the link.

Every Sprint store I've talked to doesn't have them.

Based on my research, the Cradlepoint MBR1000 will not support the Franklin U770. I verified this on the Cradlepoint site and with unlimited4g.com where I got my plan. If you want to use a USB modem, you will need a current model Cradlepoint router; your MBR1000, like mine, is no longer supported with updated firmware. I ended up getting the Sierra Wireless Tri-fi hotspot. I am using it with a repeater router so both wireless and wired components all go through the repeater.

Thanks I verified that myself. I guess I'll go with a MBR95 then which I can get fairly cheap on eBay. Still want a place where I can get the U770.