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2. Please input TFTP/FTP server address, select server type
(TFTP or FTP), filename, username, and password in this page,
then press ‘SAVE’ button, it will take several seconds to save
firmware upgrade information. After the information is saved,
press ‘UPGRADE’ button, the IP Phone will connect to the FTP
server and start to download firmware, this will take several
minutes, please be patient. After download is complete, the IP
Phone will reboot, and your IP Phone will be ready again with
new firmware.
WARNING: Do not switch the IP Phone off, press any key on IP Phone, off-hook
the handset, or disconnect the IP Phone from network during upgrade procedure.
Or the downloaded firmware will be corrupt and the upgrade process will be
failed!