I have a WRT54G-TM which is basically a WRT54GL with additional FLASH and RAM. I have been running OpenWRT on this thing for several years. Recently I was experimenting with VLANs and managed to lose the ability to access the web page. Whatever I did also prevented me be able to access it in failsafe mode. I also could not get TFTP to work for loading a new image, something I have done many times.
So then I whipped out my JTAG adapter and successfully connected. I have successfully erased NVRAM and the KERNEL. Once I did this I am able to TFTP an image onto the router without error. I am even able to JTAG a kernel on to the router.
So the problem is that no matter what I do the router does not boot into the kernel. It just seems to stay in the bootloader with the light flashing. Even though the TFTP transfer completes successfully the router never reboots it just keeps flashing it green LED, I have waited 30 minutes for this to happen.
Anybody have an idea on what I can try next? I am thinking there is not a hardware problem here because I know it was working before I started messing with the VLAN settings and all these other things seem to work OK.