How do you perform a factory reset of a 6921/6941 handset ? According to the docs (For Example:
http://www.cisco.com/en/US/docs/voice_ip_comm/cuipph/6921_6941_6961/8_5/english/admin_guide/6921trb.html#wp1031705 ) you just do the same as the 79xx series phones (Hold # at power up, etc)
However, on the 6921s & 6941s I've tried so far, this doesn't do it. All that happens, is that the phone stops booting, and just sits there showing the Cisco power-on logo. If you release # and type 1234..... The phone just boots as normal.
And suggestions ?