Is this because IMSI might (does) not maintained the updates because it's an older version, similar to the V11 patch(?) being an unavailable?
I'm not into conspiracy theories, but, yes. If you have a program or an update squirrel it away somewhere like external hard drives, flash drives, cd's or anywhere else so you know that you have it if you need it and don't have to ask anybody for it. It gives peace of mind and a sense of security. :-)