# Fix for GL.iNet Plugins/Firmware Update Fails ("Failed to update repository list") when using AdGuard Home + ISP using CGNAT

**URL:** <https://forum.gl-inet.com/t/fix-for-gl-inet-plugins-firmware-update-fails-failed-to-update-repository-list-when-using-adguard-home-isp-using-cgnat/69071>\
**Category:** Router\
**Created:** [May 30, 2026, 8:43am UTC](https://forum.gl-inet.com/t/fix-for-gl-inet-plugins-firmware-update-fails-failed-to-update-repository-list-when-using-adguard-home-isp-using-cgnat/69071 "2026-05-30T08:43:09Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![will.qiu](https://forum-assets.gl-inet.com/letter_avatar_proxy/v4/letter/w/b38774/32.png) [@will.qiu](https://forum.gl-inet.com/u/will.qiu)\
**Post date:** [May 30, 2026, 9:14am UTC](https://forum.gl-inet.com/t/fix-for-gl-inet-plugins-firmware-update-fails-failed-to-update-repository-list-when-using-adguard-home-isp-using-cgnat/69071/2 "2026-05-30T09:14:52Z")

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Hi

Thank you for your analysis and for sharing the solution.

For users who are not familiar with SSH, the same configuration can also be done through **LuCI** by following the steps below:

> [@DNS broken after upgrade to 4.9.0](https://forum.gl-inet.com/t/dns-broken-after-upgrade-to-4-9-0/68920/7):
>
> 1. Go to **LuCI → Network → Interfaces** and edit the corresponding WAN interface.
> 
> ![image](https://forum-static.gl-inet.com/original/3X/1/7/17b23cf55f91877937d2719c877f1d9213e9b5c2.png)
> 
> 2.Manually change the WAN's DNS settings to another available public DNS server.
> 
> ![image](https://forum-static.gl-inet.com/original/3X/2/0/20ebe1e79b9ea8d777228482fe0f1f6b0cb908e5.png)

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