Downgrade B97LA [FW 06.40.20] not possible anymore?

[LustigePerson]

I made a mistake and updated and now I can't root the TV again for piccap.
I have the previos FW version and I get into expert mode to select it, but it says "FW cannot be installed on the TV".
So, I guees downgrading was disabled. Has anyone a solution for this?

[menotuu]

any news? I am on 05.40.20 with my B97LA

[LustigePerson]

Check out https://github.com/throwaway96/dejavuln-autoroot for a working rooting option @menotuu