Downgrading To A Previous Software Release - Mitel 3300 Technician's Handbook

4. Check LED on the IP telephone for network activity.
5. A green LED on the bottom of the phone indicates a proper
connection.
6. A flashing red LED indicates activity (data flow) on the network.
7. Use the PING (Packet Internet Groper) on the IP telephone to
determine whether the server's (3300 ICP, DHCP, and/or TFTP) IP
address is accessible.
8. Ensure that the DHCP server has been programmed with the correct
information. Refer to the System Administration Tool online help for
details.
9. If the IP telephone displays "TFTP LOAD FAILURE" verify that the
TFTP Firmware, DSP and Main. software loads are available and not
corrupted.
10. Ensure that the phone is registered with the system.

Downgrading to a Previous Software Release

If it becomes necessary to downgrade the system software, ensure that
you have an off-board database backup that was created in the software
version that you are going back to.
Table 12: 3300 ICP Downgrade Restrictions
Controller
MXe III
MXe Server
MXe II with 21363 DSP
AX controller
MXe II controller
CX/CXi controller
CX II/CXi II controller
LX controller
Note: Some modules that are installed in the controller may not be
supported by the lower software release. For example, the DSP II card is
not supported below Release 9.0.
Lowest software release supported
MCD Release 4.2
Release 8.0
Release 7.1
Release 7.0
Release 6.0
MCD Release 4.0
Release 5.0
Software Installation
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