[Android Head-Units] maxou2:
Hi everybody,

I bought this unit on aliexpress, can't find any info about it.

Here's some specs from various hw info apps:

CPU UIS7862A - Unisoc ums512

RAM 3GB - ROM 32 GB

OS : Named 12 on seller's site ( fake ) -- Real Android 10 - API 29

Screen 1280x720 (QLED?) Rotatable ( but no android option to rotate to vertical view )

BT : 4.2 Only for Call/music/Torque... playback, no android manageable

Output : 4x45W ( TDA 7388 )

FM chip : TSC4745

DSP : 48 EQ + Surround ( The chip on the MB is a BD37033F RHOM )

4G modem + Sim holder

Rear camera input ( not tested yet )

Aux output/input ( 2 ch )

Known codes ( until now ) :

Factory Menu Settings : 8888

Factory reset : 22558800

Toppal voice assistant : Basic version, I did not use it yet, but seems to be quite limited in this version

On the upper part of the chassis a sticker with the 3SYT003 print

Android seems to be heavily customized, for example you can't enable USB Debug, the status bar is far to be standard ( se pics ) and so on.

The rotatable screen is a good idea but this is not managed at all from the OS, so if you turn the screen its view doesn't rotate with ( so it's unuseful.... ).

I'd like to make a dump but there's no way to enable USB Debug/Developer option, if you tap several time on the Build Number nothing happens and

a terminal emulator session give a permission denied error on the su executable so it's impossible at the moment to make a file system dump.

The HW doesn't seems so bad a, but it can be really more usable if the screen rotation would be managed correctly ( any play store rotation app does not work properly BTW ) and if the user interface could be standardized ( see status bar and others.. )

Even the DSP seems to be quite good ( I did not test in the car yet ) even if the chip is the Rhom BD37033F that is not the best of breed AFAIK which datasheet states a "3-band parametric equalizer".... Anyway it has 48 band parametric adjustable bands , 4 single channels adjustable surround, loudness, bass filters.... Probably the OS make a lot of work in Signal processing.

See attached picture to know what i mean.

Anybody has the same unit? Any other info about this unit?

Is an alternative firmware available?

This unit is NOT a FYT familiy's type ( checked with HWGetInfo ).

Aida64 recognizes it as a "ROCO K706" Board. I did not find any infos about this in the web.

On 4pda I found a similar unit ( Mustmax based on SC9863a SoC ) but even if the OS screenshots seem to be the same, there are quite a lot of HW differences ( ie bu32107 vs BD37033F ... )

I asked the seller for a new firmware, they sent me a link where to find an update.zip and mcu.bin file, but i'd like to have more infos about this unit and to have a full backup dump before install it. Funniest part the seller told me "Hi friend. The display is fixed, and you cannot freely switch between landscape and portrait screens." Chinese vendors are amazing, keeping in mind i bought 2 months ago another unit ( with a 4 core SOC and a XYAUTO FW ) from another seller that has a button on the status bar allowing the android screen to be rotated....

Finally I think the HW seems to be quite good but the SW could be improved.

Pls share your experiences/toughts/opinions.

Thanks

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