Jump to navigation Jump to search
INET-3FTD Tablet Front.jpeg
Manufacturer Inet-tek
Dimensions 245mm x 190mm x 10mm
Release Date August 2012
SoC A10 @ 1.2Ghz
DRAM 1GiB DDR3 @ 408MHz
NAND 4GB (with a theoretical upgrade possibility, see tricks)
Power DC 5V @ 2.4A, 4800mAh 3.7V Li-Po battery, AXP209 power management unit
LCD 1024x768 (9.7" 4:3)
Touchscreen 5-finger capacitive (Generic ASB097-50-06)
Video Mini-HDMI
Audio 3.5mm headphone plug, mini-HDMI, onboard microphone, speaker
Network WiFi 802.11 b/g/n Realtek RTL8188EUS, USB2.0 Ethernet via built-in fast Ethernet controller
Storage µSD
USB 2x µUSB2.0 (1x µUSB2.0 Host, 1x µUSB2.0 OTG)
Camera 1.3MP (1280x1024) frontal camera
Other Bosch BMA250 3-axis accelerometer
Headers UART

Allwinner A10-based tablet board. This one belongs to the INET's 3Fxx board family.


PCB Label

Zeng-gc 2012-08-28

Android information

Settings information

While running stock Android under Settings > About tablet the following entries can be seen for Polaroid MIDC907:

Model number: MIDC497
Android version: 4.0.4
Baseband version: 1.5_121116
Kernel version: 3.0.8+ inet_dada@inetsuperserver #98 Fri Nov 16 17:07:47 CST 2012
Build number: Polaroid

build.prop information 4.0.4 IMM76D 20121116 test-keys

System memory layout

This is a printout from /proc/iomem for the default rom with stock kernel.

01c03000-01c04000 : sw_nand
01c09000-01c09fff : sun4i_csi.0
  01c09000-01c09fff : sun4i_csi.0
01c0a000-01c0afff : disp
01c0c000-01c0cfff : disp
01c0d000-01c0dfff : disp
01c0f000-01c0ffff : sunxi-mmc.0
  01c0f000-01c0ffff : sunxi-mmc
01c16000-01c165ff : hdmi
01c1b000-01c1bfff : disp
01c22c00-01c22c40 : sun4i-codec
  01c22c00-01c22c3f : sun4i-codec
01c28000-01c283ff : sunxi-uart.0
  01c28000-01c2801f : serial
01c2ac00-01c2afff : sun4i-i2c.0
  01c2ac00-01c2afff : sun4i-i2c.0
01c2b000-01c2b3ff : sun4i-i2c.1
  01c2b000-01c2b3ff : sun4i-i2c.1
01c2b400-01c2b7ff : sun4i-i2c.2
  01c2b400-01c2b7ff : sun4i-i2c.2
01c40000-01c40097 : Mali-400 GP
01c41000-01c4102f : Mali-400 L2 cache
01c42000-01c42027 : Mali-400 PMU
01c43000-01c43023 : Mali-400 MMU for GP
01c44000-01c44023 : Mali-400 MMU for PP
01c48000-01c490ef : Mali-400 PP
01e00000-01e0077f : disp
01e20000-01e2077f : disp
01e40000-01e457ff : disp
01e60000-01e657ff : disp
01e80000-01e8ffff : g2d
  01e80000-01e8ffff : g2d
40000000-5bffffff : System RAM
  4002f000-40772763 : Kernel text
  40774000-4097e237 : Kernel data
5c000000-5fffffff : Mali Sdram
60000000-7fffffff : System RAM

Tips, tricks, caveats

FEL mode activation

Side buttons

With the board powered off, hold Volume+ (HOME button on the key-panel), then hold the power button for about 2 seconds, release it and press at least 3 times immediately.

UBOOT button

There is an unpopulated UBOOT switch/button connector. You can either short the pads and power the board on, or solder a switch/button and turn/press it before powering the board on.

NAND storage upgrade (voids warranty)

Some INET-3FTD boards have an unused NAND chip slot which you can use to upgrade the board's storage capacity. There are two known supported NAND chips:

  • Micron 29F32G08CBACA
  • Hynix H27UCG8T2ATR

These are SMD components, so standard SMD soldering advices apply.

Power supply

This board supports independent 5V charging with a barrel-shaped plug connector.

Reset button

This board can be rebooted with a single press of the on-board RESET button.

Unused motor connector

There is an unused motor connector that can be enabled by editing the FEX configuration file.

UART access (voids warranty)

Device disassembly

Unscrew the two screws located on the bottom port panel. Use your plastic tool to pry-open the device's cover - it is advised to start with one of the corners to minimize the risk of damaging the LCD screen while opening the device.

Locating the UART

UART connector pads are visible on the board front pictures. They are clearly silk-screened on the PCB, but hidden under the touch digitizer flex cable. Unplug the flex cable to gain access to the pads. Cables can be soldered according to our UART howto.

Also known as

  • Polaroid MIDC907
  • MyPhone MyTab 10
  • DragonTouch E97
  • DX Q91


See also

  • Inet 3fbt is a 3Fxx family board with bluetooth module.
  • Inet 3f is the bare-bones of 3Fxx family board.