Soundcraft UI12

This is a digital mixer. We found out binwalking the firmware updated it actually has a sun7i under its cooling fin...

= Identification =

The audio PCB has the following silkscreened on it: IPS6_Ui12 NSM_2015_MP3 1970-01-01

This is not an android device

= Sunxi support =

Current status
n/a. We've just got 99% certainty that this is an A20 board. Firmware image suggests it's running a 3.4.106 sun7i kernel. As far as I could find, it has at least ffmpeg and mpv on board without anything mentioned in terms of licensing information whatsoever.

Images
No full image recovered yet. The NAND is too fiddly small to clip on legs and read firmware :-(

HW-Pack
n/a

BSP
n/a

Manual build
You can build things for yourself by following our Manual build howto and by choosing from the configurations available below.

Sunxi/Legacy U-Boot
Use the  build target.

Mainline U-Boot
Use the  build target.

Sunxi/Legacy Kernel
Use the  file.

Mainline kernel
Use the  device-tree binary.

= Tips, Tricks, Caveats =

FEL mode
The SW2 button looks like it would trigger FEL mode. We were warned not to use that in order not to confuse the NAND, at least not until we have more info (u-boot version, linux kernel version, ...) and a proper firmware image to investigate.

The thing runs a telnetd. No username or password guessed yet. Firmware updates seem to be mostly signed, with no /etc/passwd file to brute force at first sight.

= Adding a serial port (voids warranty) =



Device disassembly
Just unscrew the 8 screw keeping the metal lid on.

Locating the UART
= Pictures =

= Also known as =

This thing has a brother, the Soundcraft Ui16, that uses the exact same sunxi hardware.

= See also =