Open Caveats October 2010.
CSCtg17626 Cisco Unified IP Phone 7975G died during a telepresence session and IP phone load upgrade
CSCtg63665 Out of space when Midlets tries to load on 7975 phone
To-be-fixed in version 9.0(3)
Workaround : Resetting the Cisco Unified IP Phone 7975 Factory Image
http://www.cisco.com/en/US/docs/telepresence/cts_admin/1_6/release/Notes/cts_1_6_release_notes.html#wp86826
When upgrading . Check also the compatibility matrix for the CTS and IP phone image.
http://www.cisco.com/en/US/docs/telepresence/cts_admin/1_7/compatibility/cts_compatibility_master.html
For this CDETS :
CSCti15346 MIDlet version does not verify on the phone after upgrade.
Conditions On some phones the MIDlet version does not verify properly. A reboot works on most phones to fix the problem but not on all phones.
Workaround If a reboot does not work, do the following from the phone:
1. Push the Settings button.
2. Select #7 (Applications).
3. Select the MIDlet.
4. Touch the Delete Data softkey.
The new MIDlet verifies properly.