SD Memory Card Installation/Upgrade Guide
15
Section
4
Restoring a Hybrid IP-PBX to a Previous System
Version (KX-TDA50/KX-TDA100/KX-TDA200
only)
The following procedure allows you to undo an upgrade and
return to the previous version of system software and data.
Use this procedure if the upgrade process did not complete
successfully.
4.1
Procedure
1.
Turn off the power to the PBX.
2.
Remove the new SD Memory Card that is currently installed in the PBX.
3.
Set the lock switch of the previous SD Memory Card for read-only access.
4.
Install the previous SD Memory Card in the SD Memory Card slot of the PBX.
LOCK
LOCK
