Hello J-mac,
You cannot upgrade a phone via BToE.
In order for the phone not to be upgraded from TFTP but still using the TFTP for configuration simply change:
APP_FILE_PATH="sip.ld"
into
APP_FILE_PATH=""
within the 000000000000.cfg
Boot the phone and upgrade via the Web Interface or simply setup a local FTP provisioning server.
Please ensure to provide some feedback if this reply has helped you so other users can profit from your experience.
Best Regards
Steffen Baier
Polycom Global Services
