Downgrade 5D mkiii f/w for ML w/o USB connection

[ryanpatch]

Hello, all -

I seem to be in a bind - my firmware was upgraded without my knowledge, and now I'm on a job in Kazakhstan with fw 1.3.3 and I did not bring a USB 2.0 cable needed to connect  (as luck would have it I literally have every other type of USB cable... ugh).

So, I know everyone has been going through EOS utility to downgrade, but is there ANY other way to do this? via CF card?  Or is there an Alpha build somewhere out there that works on 1.3.3?

Thanks,

R

[Walter Schulz]

USB or bust. Sorry!