I've unfortunately managed to soft brick my new WR2100 by flashing the Cudy provided OpenWrt image with sysupgrade from the CLI. I'm trying to restore the vendor firmware using TFTP, but the router doesn't seem to be trying to download it from the TFTP server... or at least, not trying correctly.
When I hold down the reset button, with the TFTP server running and my desktop's firewall disabled, I get this:
This continues indefinitely, with all the green LEDs on the back of the router lit up, and both the red and blue LEDs on the top lit continuously (not blinking). No downloading ever happens.
Anyone know what is going on here and how (if at all) I can work around it?
I'm on Linux, running the client in Wine (yes as root, yes I know that's bad, sadly Fedora lacks a good tftp server). I set the server interface to 192.168.1.88. ::1 or 127.0.0.1 aren't available. Running from the folder containing the firmware; I made extra sure it was correct.
How it was bricked? As I said, I ran the OpenWrt sysupgrade CLI tool with the copy of OpenWrt that Cudy hosts on their site, rather than one of the sysupgrade images. The router immediately rebooted, and stayed unusable for a long time. I finally pulled the plug after about 20 minutes (far longer than flashing took in LuCi), and when I reconnected it, it was bricked - can't even be pinged, though as you can see from the TFTP server screenshot, its TFTP client still runs.
Re serial port: gotcha. I ordered a used replacement (same model), and I'm going to order a serial adapter; when the replacement arrives I'll open up the current one and see what is to be seen.