Is it possible to change a headphones' firmware to add a simple thing?

I barely know about hacking and or advanced computer stuff but I bought some new headphones and I seriously am impressed that someone thought it was a good idea for the headphones to alert the battery is running out 5 seconds before it runs out. Is there a way to hack into the firmware and make them give an alert when it has like 30% battery?

submitted by /u/Piocoto
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from hacking: security in practice https://ift.tt/a8Rk3Qb

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