User Guide

226 Chapter 6. Managing the Router
Recovering Kernels for Routers with a Reset Button
A router that fails to boot may be an indication that the kernel has been corrupted.
The following recovery steps can help, but you need to have a kernel for your particular router model. If you
installed the DSL Tools and successfully connected to the router, an automatic backup process was started that
saved a copy of the kernel and other files to the PC in a subdirectory under DSL Tools called Sxxxxxx, where
xxxxxx is the serial number of the unit. The file needed for this recovery is called KERNEL.F2K.
Before you proceed with the recovery steps described below, make sure that the router has a good Ethernet
connection to the PC. If a console cable is available, you may want to connect it and start a terminal emulator
session so you can see the router’s console messages.
Additionally, you can check the LEDs’ blinking patterns (on the front panel of the router), which help you identify
the state of the router.