Hello,
I've got a working Joggler for sale in London. It'll happily boot off a USB stick as I've managed to get Android 4.4.2 (KitKat) running from it.
Unit and charger only I'm afraid and buyer collects from SW15 (Putney).
As it has personal information on it, I'll reflash it with PnP III before it is collected.
£40 cash only.
PM me if you're interested.
Thanks!