Intenso TAB744

= Identification = On the back of the device, the following is printed: TAB744 5.0V ⎓ 2.0 A Wi-Fi Intenso GmbH
 * (Intenso)
 * 7" TABLET PC

= Tips, Tricks, Caveats =

FEL mode (flash/upgrade mode)
See LiveSuit and Sunxi-tools for tools to flash, download or upgrade firmware on TAB744.

Switch the device off. Enter FEL mode by holding Vol+ button while connecting USB cable to PC. Then repeatedly press Power button while still holding Vol+ button.

If your using LiveSuit, you need to start and select firmware first, before connecting the device.

To troubleshoot the process you can check if you've entered flash mode using e.g. lsusb:

Bus 003 Device 018: ID 1f3a:efe8 Onda (unverified) V972 tablet in flashing mode
 * FEL mode check
 * 1) lsusb


 * 1) If you get ID 1f3a:1000 Onda (unverified) instead, then tablet is _not_ in flashing mode,
 * 2) the kernel will then attach scsi generic driver with output in 'dmesg' like this:
 * 3) [12514.909226] scsi host27: usb-storage 3-1:1.0
 * 4) [12515.909172] scsi 27:0:0:0: Direct-Access              TAB744           0100 PQ: 0 ANSI: 2
 * 5) [12515.909332] scsi 27:0:0:1: Direct-Access              TAB744           0100 PQ: 0 ANSI: 2
 * 6) [12515.909796] sd 27:0:0:0: Attached scsi generic sg6 type 0
 * 7) [12515.914209] sd 27:0:0:1: Attached scsi generic sg7 type 0
 * 8) [12515.914385] sd 27:0:0:1: [sdg] Attached SCSI removable disk
 * 9) [12515.917020] sd 27:0:0:0: [sdf] Attached SCSI removable disk

$ ./sunxi-fel version AWUSBFEX soc=00001667(A33) 00000001 ver=0001 44 08 scratchpad=00007e00 00000000 00000000
 * FEL version example

ADB
This device does not have root access enabled by default. If USB debugging is enabled in settings on the tablet, run

echo -e '0x1f3a\n0x1002' >> .android/adb_usb.ini sudo bash -c 'echo SUBSYSTEM==\"usb\", ATTR{idVendor}==\"1f3a\", ATTRS{idProduct}==\"1002\", MODE=\"0666\", \ GROUP=\"plugdev\", SYMLINK+=\"android%n\" >> /etc/udev/rules.d/51-android.rules' udevadm control --reload-rules

in order to make

adb devices adb shell ..

work.

Recovery mode

 * 1) Power off the device
 * 2) Hold down the vol+ button
 * 3) Power on the device
 * 4) Release the vol+ button when recovery starts

= Device disassembly (voids warranty)=

The back cover uses snap-ins, but sits very tight on the front frame. Where the volume and power buttons sit, the plastic is so thin that it's very likely to break, when trying to remove the back cover. To start opening, be sure to pick a spot about one mm below the display at a place where no buttons or connection holes are situated. Remember that you will loose warranty doing this with most vendors.

Adding a serial port
Howto needed: Does the N7 Pro serial port guide to add a serial port work for this device too!?

= Pictures =

= Also known as =


 * Unofficial:
 * Since there are no firmware files publicly available to this date from Intenso, I've tried a couple of firmware images from different vendors listed on chinagadgetsreviews.blogspot.de to repair a non-booting TAB744 that just showed (Intenso)-Logo on start. Most of the firmwares from other vendors show black screens, have wrong display resolutions or non-working sound and, unfortunately, non-working touchscreen input.


 * Caution: If your TAB744 is working fine, do not flash the below, but rather try to extract the stock rom firmware with sunxi-tools above and have someone with a broken one test your image.


 * The following options seem to be the last resort to unbrick a TAB744 until oem stock firmware file(s) are found or released on the net:
 * The most compatible Kitkat image seems to be from an Eken V11, it has working sound and correct display resolution - unfortunately touchscreen input does not work. The specific file name of that image is
 * Another good working Kitkat image is U102 U1021C from, it has brilliant screen support (better than eken v11) and WiFi works. Attaching external mouse/keyboard and adb shell works. Touchscreen input does not.
 * The Lollipop firmware images for the Softwinner/YonesTop BA1078 work as well, although flashing errors appear near the end of the flashing process. Using LiveSuit I was unable to flash a Kitkat image for BA1078 (which in theory should work, if the Lollipop image does). Again, touchscreen input does not work using these.


 * If you have links to original stock rom or a better compatible firmware, please edit this wiki page.

= See also =