Addendum:
This is a useful procedure I found and pasted into here for any of you who have found yourself in a situation where you can’t talk to your OpenWRT router because of a situation you’ve created (like I did):
Unbelievably, OpenWRT WILL NOT go to default settings using a 30-30-30 reset, so you’re going to place the router into “Failsafe” mode. This will not destroy your settings, it simply starts the router up on the 192.168.1.0 subnet without the hotspot running.
Set your landline ethernet connection to a static address on the 192.168.1.0 subnet (obviously, anything but ‘1’).
Plug it into your Linksys running OpenWRT.
Plug in the router and wait for the DMZ LED to light up. Then immediately press and hold the
reset button for 2 seconds. If done right the DMZ LED will quickly flash 3 times every second.
/! Holding the reset button before the DMZ LED turns on (i.e. when the bootloader is still running)
can reset the NVRAM. Resetting the NVRAM will brick some models.
– Telnet (NOT ssh) to 192.168.1.1
telnet 192.168.1.1
– Set NVRAM variable for hs_type
nvram set hs_type=””
nvram commit
Now reboot your router and connect to it using a dhcp ethernet connection. You should get a root prompt using ssh just like normal and can fix whatever problem you need to.