Do a search on this forum for "javaloader". With javaloader.exe you can save the .cod files off of the device with a command like "javaloader -u save whatever.cod". As far as .alx files, you are out of luck as those aren't stored on the device, however, when you want to load the .cod's on a device, just use "javaloadr -u load whatever.cod".
You should be able to...you just need to figure out the names of the .cod files put on the device by the OTA installation. Try a "javaloader -u dir" to list all .cods on the device.