With the recent "upgrade" to the remote controller firmware: Does it let us now downgrade too?

I would like to downgrade to 1.1.9 which was the only firmware that worked for me without glitches.

Thanks!

Depending on what firmware you have on your craft you can only go back 1 revision, if on V1.4 you can only go to V1.320
Controller not downgradble,

Thanks for the replies.
The last 3 updates taught me a harsh lesson, and I will not "upgrade" again unless the ability to DOWNGRADE both aircraft and remote is confirmed.