Works only on armhf routers with v4 kernel like RT-AC86U, RT-AX88U...
For other armel routers, use this PMS version
Tested with PMS v1.15.6.1079 on RT-AC86U running RMerlin firmware v384.11_2, hdd usb3, Optware & Entware
1 - Flash RMerlin firmware from here
2a - Install Optware-NG from here and choose 2GB swap file
or
2b - Install 64bit version of Entware-NG from here and choose 2GB swap file
3 - Setup Debian Stretch Buster (after update) from here
4 - Enter chrooted debian with:
5 - Update Debian
6 - Install necessary packages
7 - Get pms gpg key
8 - Add Plex to sources.list
9 - Update debian
10 - Install latest version of Plex Media Server
11 - Create startup script Not necessary anymore because is created by installer!!!
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.
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Press ENTER
12 - Give right permission
13 - Exit Debian
14 - Add Plex to chrooted services list
echo "plexmediaserver" >>/opt/etc/chroot-services.list
chmod 755 /opt/etc/chroot-services.list
15 - Start Plex from outside debian together with mounted external folder
16 - Wait about 30 seconds then go to default router ip address and port :32400/web, like 192.168.1.1:32400/web or www.asusrouter.com:32400/web
17 - Create a free or paid plex account
18 - Give server a name
19 - Create a new library and point to /mnt as path, if you want to mount a samba share use this guide
Enjoy...
How to Install the Plex Unsupported App Store through WebTools
Enter chrooted debian
Download and unzip webtools v3.0.0
wget https://github.com/ukdtom/WebTools.bundle/releases/download/3.0.0/WebTools.bundle.zip
unzip WebTools.bundle.zip
rm WebTools.bundle.zip
Go to default router ip address and port :33400, like 192.168.1.1:33400 or www.asusrouter.com:33400
Go to UAS and install some channels
Now go to Plex webpage, click on Channels and use UAS installed apps...
Source: htpcguides.com
