In order to remove the branding from some devices made by AVM like FritzBox models,
FTP can be used to tell the devices to use the stock Firmware version from the maker
and not from ISP.
In general
You have to restart the router.
While booting (during first 15-30 seconds) you will acces the FTP server from
the bootloader.
(Note: If you wait for too long you will only be connected to the NAS. And "adam2" will not be accepted as the user and password.)
Fritzbox 7412
My FritzBox 7412 device had 192.168.178.1 as the IP address. You need to replace that with yours.
I. Firstly restart the device, then open a Terminal on your PC and type:
ftp -v -d 192.168.178.1
II. Enter username
adam2
Enter password
adam2
III. Then comes the command which removes the branding
quote SETENV firmware_version avm
IV. Now we can reboot the device, using the following command
quote REBOOT
Fritzbox 7362 SL
ftp -v -d 192.168.178.1
adam2
adam2
quote SETENV firmware_version avm
quote REBOOT
Below is the communication with the Fritzbox 7362 SL
~$ ftp -v -d 192.168.178.1
Connected to 192.168.178.1.
220 ADAM2 FTP Server ready
ftp: setsockopt: Bad file descriptor
Name (192.168.178.1:allen): adam2
---> USER adam2
331 Password required for adam2
Password:
---> PASS XXXX
230 User adam2 successfully logged in
---> SYST
215 AVM EVA Version 1.1964 0x0 0x740D
Remote system type is AVM.
ftp> quote SETENV firmware_version avm
---> SETENV firmware_version avm
200 SETENV command successful
ftp> quote REBOOT
---> REBOOT
221 Thank you for using the FTP service on ADAM2
ftp>