How can I convert FritzBox 7170 EN to DE version?

[gwojtal]

Hello,
I have got FB 7170 originally Annex A, English version. Now i have firmware 58.04.57 EN. I'd like to change the version to Annex A version used in Austria or German 58.04.67... but with Annex A. I don't know what is better.

My HW is 127.1.1.0
Annex is A

How can I change the software?

Thank you for helping me

 

[colonia27]

maybe this will help you

 

[gwojtal]

So... I should only to change Branding and recover with Austrian Annex A firmware?