Reply to switch from firmware 1.4 to 1.2 w/o reflashing?

I know you can switch from 1.3 to 1.2 by following the steps in this video:

http://www.djranking s.com/community /sho...43&postcount=6

but how can you switch from 1.4 to 1.2?

I need to do this to use my VCI-100 SE (that I just bought from dylooon) in Mixxx which has mappings for the VCI-100 but, for example doesn't work with the pitch faders (oddly most everything else works)

I have searched and read a lot of the common questions about firmware thread but I'm not seeing this answer anywhere. Sorry if this is in the FAQ or already posted.