MSI Primo81

This is a brand name tablet from a reputable hardware vendor, so no problems with identification are expected. The tablet has a nice slim, but sturdy aluminium body and a really high quality 1024x768 IPS screen. However the linux-sunxi software support for A31s SoC is still a work in progress (u-boot is a major show stopper), so don't expect anything spectacular or even usable as a GNU/Linux user yet. The stock Android system from the vendor naturally works.

= Identification = On the back of the device, the following is printed (the model number part after dash may be a bit different, depending on the color of the tablet): MSI Primo81-216

The PCB has the following silkscreened on it:

In Android, under Settings->About Tablet, you will find:
 * Model Number: Primo81
 * Build Number: MSI N821 20140218

= Sunxi support =

Manual build

 * For building u-boot, use the  target.
 * The .fex file can be found in sunxi-boards as

Everything else is the same as the manual build howto.

Mainline U-Boot
For building mainline u-boot, use the  target.

Mainline kernel
Use the  device-tree file for the mainline kernel.

= Tips, Tricks, Caveats =

FEL mode
The VOL+ button triggers FEL mode. The button is directly connected to the UBOOT_SEL pin and drives it low when pressed (as can be verified by reading the BOOT_SEL_PAD_STA bits from VER_REG).

= Adding a serial port (voids warranty) =



Locating the UART
= Pictures =

= Also known as =

= See also =

Manufacturer images
The manufacturer provides a PhoenixSuite recovery image at http://www.msi.com/support/windpad/Primo_81.html#down-firmware