Revert R6400v2 to stock, without any wired ports working?

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lolcocks
DD-WRT User


Joined: 31 May 2013
Posts: 137

PostPosted: Sun Jun 20, 2021 3:50    Post subject: Revert R6400v2 to stock, without any wired ports working? Reply with quote
Hello,

I have an R6400v2 and one day, suddenly all wired ports, LAN and WAN stopped working out of the blue.

Tried doing a reset to its DD-WRT over WiFi but that didn't work.


Someone on this forum said I should use TFTP to flash back to stock but as I said, wired ports are not working.


Is there a way to flash stock via WiFi?

I just want to check if the wired ports not working is a software issue that could be fixed via flashing stock firmware or an hardware issue.

I did open up the router and there are no signs of the damage absolutely anywhere.



TL;DR:
Any way to revert DD-WRT to stock on the R6400v2 without using the LAN or WAN ports?
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Per Yngve Berg
DD-WRT Guru


Joined: 13 Aug 2013
Posts: 6203
Location: Romerike, Norway

PostPosted: Sun Jun 20, 2021 8:15    Post subject: Reply with quote
Get the latest build r46974

It has the swconfig utility you can use to check the ports.
lolcocks
DD-WRT User


Joined: 31 May 2013
Posts: 137

PostPosted: Sun Jun 20, 2021 11:15    Post subject: Reply with quote
Per Yngve Berg wrote:
Get the latest build r46974

It has the swconfig utility you can use to check the ports.



Thanks!

I have a question though,

I was able to flash the stock firmware via DD-WRT.

However, all the wired ports are still not working.


So I am wondering, will flashing the latest build r46974 and checking via swconfig will provide any results as to why the ports are dead? Will it be worth it?
Per Yngve Berg
DD-WRT Guru


Joined: 13 Aug 2013
Posts: 6203
Location: Romerike, Norway

PostPosted: Sun Jun 20, 2021 11:49    Post subject: Reply with quote
swconfig will list each port in the switch.

swconfig dev switch0 show

swconfig list (if the switch does not turn up here. The fault is between the SOC and the switch)
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