Had the same problem exactly trying to update the SPA942's, and resolved it by downloading a standard tftp server from http://tftpd32.jounin.net/tftpd32_download.html - you'll need to set it up and point the base directory to the location of your spa9000 upgrade bin file.
Configure Multicast Paging on the Cisco IP Phone 7800 Series or 8800 Series Multiplatform Phone
The Cisco IP Phone 7800 and 8800 Series Multiplatform Phones provide voice communication over an Internet Protocol (IP) network...
Add Call Park on a Cisco 7800 or 8800 Series Multiplatform Phone Key Expansion Module
Call park allows the user of the phone to put an incoming call on hold so that the call can be retrieved on another phone. A call is park...