My goal is to remove the following line from config.txt:
dtparam=audio=on
Is this possible to do through balena web gui, or is the only option to edit the file directly?
Hi Alex,
In your Device Configuration you can update the DT parameters (see at the bottom of the screenshot below).
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One thing to like about Balena is the architecture and all the features, but without awesome user contributions like yours it would not be the same! Thank you so much @janvda - because of you my hifiberry dac+ board now “just works”. Thanks!
For future reference, the guide a followed said “remove this line: dtparam=audio=on.”
So what I did was just to update the dtparam key in the above screenshot to this value: "i2c_arm=on","spi=on", and it works 
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