User's Manual

Avaya B179 SIP Conference Phone Installation and Administration Guide
48
DISABLING FIRMWARE UPGRADE FROM SD CARD
To disable the rmware upgrade from the SD card, set the <sd_upgrade_disabled> tag in the
global conguration le to true.
Note: You cannot enable the rmware upgrade from the SD card after it is disabled.
The recovery process prompts to initiate the SD card-based rmware upgrade even if the
option is disabled in the conguration le. When the user selects the option to initiate the
upgrade, the following messages are displayed:
SD-card upgrade. Please wait.
SD-Upgrade disabled. Skipping upgrade.
FIRMWARE UPGRADE ON MULTIPLE PHONES
To upgrade the rmware on multiple B179 conference phones, use a device management
server.. For information about conguring and using a device management server, see Using
a device management server on Page 58.