CacheWarmer (https://assetcache.io/cachewarmer/) — which bridges the gap between Apple’s Caching Server and a traditional software update server — has been updated to version 15.
It’s a command line utility for OS X Mavericks and later that warms up (or pre-populates) a Caching Server with iOS and OS X updates rather than waiting for devices to request them. Version 15 introduces a new feature management scheme and reduces CacheWarmer’s download footprint. Here are the full release notes:
° Populates ipsw files used by Apple Configurator 2 for restoring iOS – This is a licensed feature and opt-in –enable ipsw
° Populating iOS beta updates is now a licensed feature and is opt-in –enable iosbeta
° Support for the new update feed used in the iOS 9.3 beta
° Opt out of OS X updates –disable mac
° Performance improvements when parsing an iOS update feed
° No longer reports a successful download if the Caching Server returns a 503 or 400 HTTP status code
° No longer downloads updates for OS X Mavericks or Yosemite
° To update to CacheWarmer build 15, run CacheWarmer –update
CacheWarmer can be used to pre-populate updates for a single model identifier (e.g. iPhone 6,1) without a license. Populating for multiple model identifiers or OS X requires a purchased license, which costs $4.99 for a single user license. Volume pricing is available.