For changing config files in Venus OS I found the hint on Github:
Since the root filesystem is mounted read-only, you will need to remount it to read-write before you can edit the file. There are three ways to change that:
- temporally: issue the command
mount -o remount,rw / (which holds until the next reboot or issueing mount -o remount,ro /)
- semi-permanent: issue the command
/opt/victronenergy/swupdate-scripts/remount-rw.sh (which holds until the next firmware update)
Maybe it is relevant..?
That is because you are not posting as a code block...
In order to make code readable and usable it is necessary to surround your code with three backticks (also known as a left quote or backquote ```)
```
code goes here
```
You can edit and correct your post by clicking the pencil
icon.
See this post for more details - How to share code or flow json
It locks up on selecting code quotes.
Reopened this page so many times now that I've inadvertantly edited this post !
Safari? Old version of Chrome? Internet Explorer?
You really dont include enough info in your posts to properly help you 
Also, you can simply type in the three backticks ``` using your keyboard (or even copy paste these backticks from my post)
Edit: It's opera
I didn't know you could just type the backticks...
Weird...just typed the backticks and it locked up again.