Hi Todd, I'm no Linux expert but you should be able to upgrade the phone with TFTP
Upload the spa firmware file to your Linux's TFTP server root directory.
Start the TFTPD service (shall be present by standard on any Linux)
Update the SPA's config in the Provisioning screen / section Firmware Upgrade
This should be able to pull down. Now, make sure the phone is on at least 7.5.2, if on earlier than 7.5.2 you can't upgrade to 7.5.4.
-Tom
Please mark answered for helpful posts
-Tom
Please mark answered for helpful posts
http://blogs.cisco.com/smallbusiness/