fritz 7140 firmware downgrade

[binary_dreamer]

Hi.
i got a FBF 7140 with the latest firmware and i would like ot downgrade it.
is there an image of the firmware and a tutorial on how to downgrade it?

 

[Feuer-Fritz]

I only know a german description to downgrade. Perhabs you are able to translate it.

Please follow this link for it.

Which firmware do want to downgrade on?