Currently I have no plans to support RaspiOS too. There are many reasons that speak against it:
Maybe the root cause of your 4.0 channel issue is the same like this issue:
Please don't use the outdated version 0.0.1 from Argon40. Instead use a recent version like 1.0.0:
Install instructions
Download Link at GitHub
Discussion thread
chewitt ,
I'm appreciate your offer and hasn't forgot this Thread 
Until now I was focused to make the technical part right. I wasn't unhappy with the original add-on icon, but it makes sense to follow a unified style.
Shortly after I enabled the issues option at the GitHub repo yesterday, it seems there is an interest to make some cosmetic changes...
Version 1.0.0 released:
New versions are now being published on GitHub 
I think something like that should work for you:
curl -X POST -H "content-type:application/json" --data '{"command":"componentstate","componentstate":{"component":"ALL","state":false}}' http://192.168.133.114:8090/json-rpcThat's nice.
Also if you got the outdated add-on download not from my repository, you are right that "issues" is disabled. I'm currently undecided, if I should enable this opportunity or not. From the workflow view it would be the right way if someone like you can use it, but I have not the time to moderate this.
Downloaded from github right now , but latest libreelec version gives installing error.
Until now I only provided ready to install add-on packages here (attachments are at the end of the text):
So I don't really know what you are talking about and need more details with an exact version and, if necessary, a link to the debug log.
Perhaps you tried the original version 0.0.1 from Argon, which is known that it not working with versions, which are newer than LibreELEC 9?
Version 0.0.14 beta 2 released:
With this version in the most cases it shouldn't needed anymore to create the lock file to protect the own remote control configuration.
But for the worst case, for example if someone is using a lircd.conf file, the lock file support remains.
You are welcome. By the way, for the fan control of that case you can install this Addon: RE: [RPi4B] Argon One Case Shutdown
But please do place the lock file there before the Addon installation, to ensure that your current remote control configuration is not affected:
touch /storage/.config/argon40_rc.lock
The positioning of usb_max_current_enable=1 within the config.txt is not really important, but its good placed below the exiting lines in the [all] scope. It should be case sensitive, so you should use lower case for parameters in the config.txt, but UPPER CASE for parameters of the bootloader config.
You can check the current bootloader config with:
rpi-eeprom-config
or
vcgencmd bootloader_config
and edit with:
rpi-eeprom-config -e
That information is very important, because you need this:
bootloader config / EEPROM:
PSU_MAX_CURRENT=5000
config.txt
usb_max_current_enable=1
Explanation here: RE: LibreELEC 12.0 on Raspberry Pi5
Please keep in mind, that the RPi5 itself needs more power, than previous generations. If the system is very CPU agile and not in the idle state, then attaching of USB devices could be the worst case for the power supply and/or the PMIC.
If your USB HUB is really a powered one, you should try to only attach 1 tuner to the RPI5 directly and 2 tuners at the powered HUB.
Only to be sure, you attached the RPi5 power supply directly to the RPi5 pcb, right? You doesn't use a additional case or gadget like RemotePi board ?
This doesn't looking good regarding the USB power. Was this an attempt with the powered HUB?
[ 323.045985] usb usb1-port1: over-current change #1
[ 323.046043] usb usb3-port1: over-current change #1
[ 323.075888] usb usb4-port1: over-current change #1
[ 323.075928] usb usb2-port1: over-current change #1If you want to get some specific support, it's needed what you provide more detailed information about your system. The best way to start is:
- enable debug logging https://wiki.libreelec.tv/support/log-files
- reboot
- try to play such FLAC file
- paste the link to the log here
And now the important question: What do you have detached? Only the Rii X8, ore more devices?
I don't have a keyboard connected.
but
And my wife uses an Rii X8 for iPlayer searches
It sounds weird to me, because the Rii X8 is a keyboard. Or do you use the RPi in time-sharing with your wife? 
Perhaps you has only Caps-Lock enabled or a battery issue with that device. If somebody else have the same issue in the future, it would be nice to know.
