None of the sellers of these Chinese head units support their customers.
You have a link to your device on the sellers homepage?
XOMAX XM-2VA757
299,00 EUR (UVP*) XOMAX XM-2VA757 Android 10 Moniceiver mit BLUETOOTH 3x USB, 2x SD Farbe: schwarz Android 10 Betriebssystem Einbaumaße: 2 DI...
The uint was purchased via amazon and the support is from the supplier in europe ... they refused to help by supplying the original firmware. I think they are only a front end distributor for OEM white box products .. and this particular combination of processor, board and SOC is just not showing up on any of the searches I have done ,,, I almost gt the feeling that it is a tabnlet hidden inside a car audio box ... the hardware sun8iw15p1 points to it being an A50 SOC ... ( https://linux-sunxi.org/Allwinner_SoC_Family ) ... which fits the spec reported by AIDA64 ( https://linux-sunxi.org/A50 ) ... but I'm still no closer to finding any kind of solution .. I really think I need to root the device and tinker with the formware .. but I'm not going to do that without an original ROM to use as a rescue/backup.
The system spec from the firmware sees it as an A23 chipset .. but it's a 4 core, so it could also be an A33 (pin compatible with A23) but that would normally expect the hardware to be sun8iw5p1 ... It's all so very messy
and thanks for talking an interest @TorstenH .. I really appreciate your patience.
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