# Warning

> Following instructions are provided without any warranty, and may even get you in trouble legally.
> The instructions are provided for testing, and should be use with care.
> We (including commentators) are not responsible for any damage to your device(s).

# Introduction

This may enable additional channels and power (in most cases don't) on ASUS Merlin provided routers.

The nvram settings have been tested on a ASUS RT-AX58U, they may work on other models as well ([ASUS RT-AC78U](https://gist.github.com/francoism90/e3da8d155f9b0920da10d35b56b06f3f)).

Please use `nvram dump` and adjust when needed, as they may differ on your device!

Credits to the commentators below, and members on the SNBForums posting instructions. Please post your findings, and help others when needed. :)

## Login into router using SSH

See https://www.htpcguides.com/enable-ssh-asus-routers-without-ssh-keys/ for instructions.

## Backup current settings

`nvram dump > dump.txt`

> NOTE: You need to copy the dump.txt (or output by `nvram dump` to somewhere else, as they will be lost on reboot

## JFFS custom scripts and configs

> Make sure `Enable JFFS custom scripts and configs`, is enabled in System settings.
> See https://github.com/RMerl/asuswrt-merlin.ng/wiki/User-scripts for details.

Create a `/jffs/scripts/wl` file, and paste the `nvram` overwrites into this file (see given example file).

Create/adjust `/jffs/scripts/init-start`:

```sh
#!/bin/sh

[ -x /jffs/scripts/wl ] && /jffs/scripts/wl &
# [ -x /jffs/addons/AdGuardHome.d/AdGuardHome.sh ] && /jffs/addons/AdGuardHome.d/AdGuardHome.sh init-start & # place before addons
```

Create/adjust `/jffs/scripts/services-start`:

```sh
#!/bin/sh

cru a wl "0 */8 * * * /jffs/scripts/wl"
```

Make sure the scripts are executable:
```bash
chmod a+rx /jffs/scripts/*
```

## Applying changes

You need to reboot the router to apply changes

Please note changing settings in the UI, may undo nvram changes.

It is recommended to change settings using CLI instead:

```sh
nvram set wl1_chanspec=149/160
# nvram set wl1_chanspec=149/80
# nvram set wl1_chanspec=48
service restart_wireless
```

To make the changes persistent, make sure to add them to the `jffs/scripts/wl` script.