The FTP comment is referring to the fact that there is no binary installer for 012 available for download, and that instead you need to download the 011 one and update that.
The update files cannot easily be put into an individual archive for download because that would not allow updating from any version to the latest. The update server has only the files for the latest version, and the updater checks each local file if it is different from the update server\'s (the \"registry\" contains the md5 hashes and path info of all files on the servers).
Pre-packaged updates would either have to be ridiculously fine-grained, which would mean that you\'d have to do a step by step upgrade if you missed several, and also take a lot of work to prepare, or coarse-grained, meaning that you\'ll always download lots of files that your installation already has.
These issues exist due to the high frequency of changes after major updates have been released.
What you _can_ do, however, is to compress the entire installed PS version, take that to the convenient download location, uncompress it there, run the updater from there, then compress the updated version and take that back home, uncompress and -voila- PS is up to date.
Obviously that\'ll involve the risk of your PS install becoming infected by a virus or other malware, as school computers tend to be full of that due to careless, ignorant, malicious or \"users\" who think they are somehow funny or smart.
It also won\'t work if the school system is running a different OS than your home system.
