Recently Snap appear to be configuring parameters on the Fritzbox that are persistent through factory resets.
This was annoying me and I believed it to be causing me problems so I found a way to reset the Fritzbox.
Unfortunately I did this a few months ago and I am only writing it up now from notes I made on the day. I am also unable to retry this as I don't have a Fritzbox I was setting one up for my parents. For this reason I would advise that you only follow this guide if you know what you are doing. I am not responsible if you brick your Fritz, although I would say there is a low risk of that.
This will also upgrade your Firtzbox firmware to the latest available. You may be able to downgrade after this but I am not sure.
If you are familiar with Telnet and have your own tool you can skip step 2, see step 3 for IP address and Port settings.
If you are going to complete this guide I would appreciate if you could take some screenshots so I can add them to each step. Also please inform me of any errors you find.
- Download the recovery tool for your Fritzbox. This can be found on the AVM FTP server ftp://ftp.avm.de/fritz.box/. Once on the AVM FTP you will need to navigate to the directory that relates to your fritzbox. For me this was fritzbox.fon_wlan_7360_v2. Now navigate to the x_misc folder. Next select the correct folder for your language. For me this was englisch, the type-o is on the FTP server. Finally you need to download the executable named FRITZ*.recover-image.exe where the * is the model of your Fritzbox, languages and firmware version. My full URL was ftp://ftp.avm.de/fritz.box/fritzbox.fon_wlan_7360_v2/x_misc/englisch/FRITZ.Box_Fon_WLAN_7360.en-de-es-it-fr.06.05.recover-image.exe
- Skip this step if you have your own FTP tool and know what you are doing. Download PuTTY from http://www.chiark.greenend.org.uk/~sgtatham/putty/download.html you only need putty.exe but you can download the installer if you prefer. If you get the installer go ahead and install it now.
- Once you have both the tools you need to run the Fritzbox recovery tool and follow the instructions until you get to the point where it complains about the settings being set by a service provider. At this point you need to open PuTTY. On the right you will see an area for an IP Address, Port and Protocol. Set the Protocol to Telnet, enter the IP Address shown in the recovery tool and set the Port to 21.
- Now, after setting up PuTTY, click the open button at the bottom of the screen. This will now open a black console window. Enter the following commands:
- User adam2
- Pass adam2
- SetENV provider
- Finally close PuTTY and the Fritzbox recovery tool. Then open the recovery tool, again following the instructions. This time you should not be presented with an error about the provider and the tool should flash the Fritzbox.