Unbricking Belkin RT3200

I recently tried to update my spare Belkin RT3200 and I thought that converting it to UBI is a good idea... Anyways, I went to the link for installer and surely downloaded the wrong one, so it's bricked now.

I got a USB to COM adapter, Windows 11 laptop and I can't make it work as described in the article. I can open Putty and select COM1, 115200 baud in GUI and it opens and if I power the router I see some messages so it looks like my COM1 works, but if I try to run:

mtk_uartboot -a -s COM(1) -p mt7622-ram-1ddr-bl2.bin -f openwrt-23.05.0-mediatek-mt7622-linksys_e8450-ubi-bl31-uboot.fip && putty.exe -serial COM(1) -sercfg 115200,8,n,1,N

I get:

mtk_uartboot - 0.1.1
Using serial port: COM(1)
thread 'main' panicked at src\main.rs:143:17:
Failed to open port: Error { kind: NoDevice, description: "The system cannot find the file specified." }
note: run with RUST_BACKTRACE=1 environment variable to display a backtrace

If I run just the putty part (for troubleshooting purposes) it still doesn't work

putty.exe -serial COM(1) -sercfg 115200,8,n,1,N

Is it some common problem? It looks like trying to use COM1 from cmd just fails. I tried running cmd as Administrator with the same result.

Pretty sure the syntax is COM1, I assume you've killed your Putty while attempting the mtk_uartboot ?

1 Like

Yes, to closing Putty.. it makes a lot of sense, will try. It will be funny if that was the only issue.