The docs say that the usb install package USB-Install-7921.1-0-1.exe can be downloaded at http://www.cisco.com/cgi-bin/tablebuild.pl/ip-7900ser-crypto . That seems no longer to be the case: That link redirects to the main software download menu for UC products, and browsing through there at length has failed to find me the installer. The only downloadable options for the 7921 are Config Assistant, Wavelink Avalanche, Skinny, and localization packs.
Help?