Plex Media Server on ARMhf Routers

Works only on armhf routers with v4 kernel like RT-AC86U...
For other armel routers, use this PMS version
Tested with PMS v1.10.1.4602 on RT-AC86U running RMerlin firmware v382.2_alpha2, hdd usb3, Optware & Entware

1 - Flash RMerlin firmware from here

2a - Install Optware-NG from here and choose 2GB swap file
2b - Install Entware-NG from here and choose 2GB swap file

3 - Setup Debian Stretch from here

4 - Enter chrooted debian with:

debian enter

5 - Update Debian

apt update && apt upgrade -y

6 - Install necessary packages

apt install wget libexpat1 apt-transport-https binutils gnupg zip

- Get uglymaoo’s gpg key

wget -O - | apt-key add -

- Add Plex to sources.list

echo "deb stretch main" | tee /etc/apt/sources.list.d/pms.list

- Update debian

apt update

10 - Install latest version of Plex Media Server

apt install plexmediaserver-installer

11 - Exit Debian


12 - Add Plex to chrooted services list

echo "" >>/opt/etc/chroot-services.list
echo "plexmediaserver" >>/opt/etc/chroot-services.list
chmod 755 /opt/etc/chroot-services.list

13 - Start Plex from outside debian together with mounted external folder

debian restart

14 - Wait about 30 seconds then go to default router ip address and port :32400/web, like or

15 - Create a free or paid plex account

 - Give server a name

 - Create a new library and point to /mnt as path, if you want to mount a samba share use this guide


How to Install the Plex Unsupported App Store through WebTools

Enter chrooted debian

debian enter

Download and unzip webtools v3.0.0

cd /var/lib/plexmediaserver/Library/Application\ Support/Plex\ Media\ Server/Plug-ins/

Go to default router ip address and port :33400, like or

Go to UAS and install some channels

Now go to Plex webpage, click on Channels and use UAS installed apps...


  • Lorenzo Copparoni

    Just a question: I have the AC86U and I'm thinking about installing Plex media server using this guide. Just a few questions:

    1- The video decode is made by the router's CPU while streaming videos, films, etc.. from the server? If yes, did you try with some heavy videos like h265 or hevc 1080p and/or 4k videos?
    2- I have a USB3 HDD for films, images, etc, and a USB2 pendrive where I already have the 2GB swap file needed. Will the USB2 pendrive be OK in terms of speed to make the router working normally and without slowdowns even with Plex installed and running?

    Thanks and sorry for the (maybe) dumb questions :D

    • The router has 1.8 Ghz cpu and is capable to transcode some videos, I didn't tested with 4k.
      You can try installing on pen drive and post results, anyway hdd usb is recommended.

      • Lorenzo Copparoni

        Thanks for the reply. Did you tried with some 1080p files instead? Anyway are there any problems installing Plex on the HDD and leaving Transmission and other few things on the pendrive?

        • I tried with 1080P but transcoding is slow, remember this is just a router not a nas.
          A pendrive is much slow than a usb hdd, try and post feedback


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