How to use failsafe mode if there are no buttons on the router?

Question

network hardware

Continuation of my question about x-wrt.
I read in the answers that there is a failsafe mode for resetting the password. As I understand it, in this mode, you need to press the buttons on the device. The modem has one on/off button. What to do?
PS Sorry for repeat

Answer 1

Sorry, author, did you read the manual on your device? Here , for example. And it says in black and white: “Function button F - to reboot the device and reset to factory settings;”