[SomethingStupid]

My objective was to block all non-vpn but ended up blocking it all.

So I created a bridge br1, I then assigned it to the main bridge br1 on eth0

I put iptables -I FORWARD -i br1 -o eth0 -j DROP
In the Firewall

I cannot access the router now.

Reset button would usually fix this issue but after upgrading to the newest kong mod build none of the buttons work.

When I try to reset using 30/30/30 method it does respond but when it loads back up it has the same settings.

Think maybe I need a JTAG cable or a Serial Cable? Just need to reset the NVRAM

Router works perfectly fine just this one line on the firewall so I can't get to.

[egc]

Welcome to the forum.

I will transfer this thread to the appropriate forum.

See the forum guidelines with helpful pointers about how to research your router, where and what firmware to download, where and how to post and many other helpful tips:
https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=324087

Kong stopped developing for DDWRT a long time ago and his build are no longer supported or advised.

You can try to TFTP or use NMRPFlash to upload a decent build with a working reset button.
30/30/30 is not advised on Broadcom Arm routers, if you have a working reset button then while the router is running pressing it for around 10 sec should do

The R6400v2 debrick guide has instructions how to use TFTP or (usually easier) NMRPFlash.
See second post in this thread: https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=316399

[the-joker]

Kong builds, are so old now that they have more known unpatched and currently exploited security issues than a fist-full of rice, each grain being an unpatched CVE.

And with that, welcome to our community

[SomethingStupid]

I resolved the issue by using a USB to TTL cable and Prolific 3.3.2 (2008) drivers as it was a cheap Chinese cable which I believe was being blocked when using default 2021 driver, discovered that the when upgrading from Kong old build to latest Beta that the Reset Button option (new) is Disabled by default...

Thank you for your help, being using Kong firmware for many years so hard to come off it, router is about 8-9 years old and runs fine on Kong so will continue on.

[the-joker]

[kernel-panic69]

There were some builds where the reset button was broken across the board, and there were still some lingering devices where it was still broken, not a new issue:

https://svn.dd-wrt.com/search?q=reset+button&noquickjump=1&changeset=on

Granted, it could be user error here, or bunk nvram corruption from the <Kong> build, and doing a hard reset is advisable, but neither my R7000P nor my R7800 have had a hard reset or reset of any kind (except when RB mode testing bootlooped my R7000P), and both were initially flashed with 40270M <Kong> builds. There is a way to overcome nvram variable changes that doesn't cause as much issue as most people have, but I should consider with all of the variable names that have changed, etc. to do a hard reset.