[Freeswitch-users] Display update support on Cisco SPA 509g?

Hello list, Does anyone know if the Cisco SPA 509g supports display updates? Is there any good way to check this? I run a uuid_display <uuid> <display> on a channel that the SPA is on, but I'm not even seeing freeswitch send an UPDATE to the phone. This works on my Aastras and Polycoms, so I'm wondering if there is any way to get display updates on the SPA, or if it's simply unsupported by the phone. Thanks! - Steve