You can do the following:
From internet-enabled machine:
1. Access http://download.adobe.com/pub/adobe/coldfusion/xml/updates.xml and save updates.xml to some folder, say, updates. You can use "Save As" in Chrome or View-Source in IE to save the file
2. Access http://download.adobe.com/pub/adobe/coldfusion/hotfix_005.jar to save the latest update jar file to the same folder
On your development server:
1. Copy the updates folder (with updates.xml and hotfix_005.jar) to your webroot (for example, c:\Coldfusion10\cfusion\wwwroot\)
2. Edit updates.xml to modify "cfhf_downloadlink" for "ColdFusion 10 Update 5" item to point to the update jar file location in your coldfusion webroot (for example, http://[ip]:[port]/updates/hotfix_005.jar)
3. In ColdFusion Administrator -> Server Updates -> Settings, change local site to point to updates.xml file (for example, http://[ip]:[port]/updates/updates.xml)
4. Cick on "Check for Updates" to get the update to show in "Available Updates"
5. Logout and log back in (if required)
In case you want earlier updates (say, Update 4 and earlier) too, download the required update jar file and change the corresponding "cfhf_downloadlink" entry in updates.xml for that update (as described above)
Hope that helps.
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