The GUI for this firmware does not allow you to upgrade/downgrade with a .chk file - it only takes .bin

 I've been trying for 2 days to tftp the default Netgear load back onto my WGR614L, but can't get it to take.

 It appears that the only thing that can be TFTP'd to the router is a bootloader - its looking for vmlinuz, which I can't find anywhere.

 Hopefully this community can help me get my router back to the factory load (WITHOUT using JTAG).

Just a friendly warning :)