Can I change the mini-controller / microcontroller code to a store product?

Question

My girlfriend recently bought a product for her skin, mainly a mask with a backlight inside that controls a power cord, like an auxiliary cord, to an additional port on the mini-controller. This is only useful for 30 uses, every time you turn it on, the lcd screen is counted until it reaches 0, then you need to buy a new controller.

I find it extremely useless to buy a new plastic controller after 30 uses. My question is: is it possible to somehow connect this device to my laptop through the extension of the aux port or additional port and change the code written on it.

I work as a web developer by profession, so I am not someone else's code. I just need to know how to connect it, read the code and compile the code, etc., in order to change the counter or delete it.

This is a mini-controller YaU 94v-0 (yes, R - back)

Interestingly, if I connect the mask to my iPhone or Mac, it will turn on one set of light (there are two types / sets), but not the other.

Thanks in advance for your hacking tips.

Answer 1

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WP GND.

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Answer 2

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