A workaround to this could be :
1. Upload user ringtone 1 and 2 (using a USB key or http://<spa_ip>/ringtoneX?...) ;
2. Modify one of the 1-10 default ringtones with w=file://path_to_user_ringtone.mp3.
Then we could use it into the SIP header.
Un...
I'm not aware of a deep hardware/software reset, perhaps Dan knows, Cisco support should know :)
Reading again your first post, your issue sounds like a hardware issue to me.
No more under warranty ?
However last Bluetooth firmware version is 0.00.34 and comes from firmware package 7.5.9a, 09-SEP-2011.Quite old actually, Ady certainly already uses it...But a re-flash could be worth it !