Where to get 5D2 firmware 2.1.1??

[Knut Skywalker]

Hey guys,
i recently bought a 5D2 with pre-installed firmware 2.0.9 and wanted to try the Magic Lantern Unified Beta on it. To install Magic Lantern i need firmware version 2.1.1. I've checked the web but can't find any non-canon sources to download this firmware. Canon only has the 2.1.2 firmware available in the download section.

Any ideas where i can get it?

Thanks in advance and greetings from Germany.

Knut Skywalker