I have installed OpenWrt on a FritzBox 7530 following instructions in this topic, and it seems to work fine, but I was wondering if there is a way to restore the original firmware.
I have tried to use AVM’s firmware recover tool, but it doesn’t seem to work now that OpenWrt is installed. It seems to detect the FritzBox and displays:
Hardware: FRITZ!Box 7530 Bootstrap: 4540 Firmware: 164.07.03
But then it displays
Error: 'Incompatible memory layout' and refuses to continue.