Hi.
If you're experiencing issues with the 6000A, you need to check your processor. Look through gaps using a flashlight and your phone's camera. The processor is located at 8 o'clock (left corner) and is a square chip. If you find a GD32F105 chip, you need GVR firmware. If you find an ST32F105 chip, you need ST firmware.
Your problem with settings not being saved appears to be a firmware error.
And look at the menu if you have VER-032 and chip GD32F105 it's 99.9% problem with firmware. Someone flashed the unit with the wrong firmware.
Pay attention. Do not flash units with VER-0XX firmware and GD chips from the audiolab site, they don't have firmware on the website to resolve this problem.
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