[Teclast X98 Air 3G] royeiror:
The alternate way which is a bit more cumbersome, but worked perfectly for me is the following, which can be found in this link:

"Required materials:

- A Teclast X98 Air 3G (obviously), battery sufficiently charged (recommended to be fully charged the battery before starting the process). The tablet will be running Windows 8.1 or in FastBoot mode

- The Android DnX BIOS (or Android BIOS) from here

- Tin last available (this season) Android ROM for the X98 Air 3G: X98_Air3G_(C6J6)-Android4.4.2-V1.10.7z

-The tools of the platform upgrade Intel (Intel Manufacturing Tools). These are available in two versions, the newer and older . Start with the newest and if do not work on your computer, install the older version. Only one version must be installed on your computer.

Upgrade Preparation tool (Intel Manufacturing Tools)

- Unzip the computer you use to convert (not tablet), the Android ROM given above.

- Unzip one of the two available sets of tools Intel Manufacturing Tools. Inside the folder, you will find some executables that run in the following order and always with administrator privileges:

iSocUSB-Driver-Setup-xxxexe: At some point during the installation, you will know that you have to connect the X98 with USB cable to the computer to install the NAND drivers. H connection is necessary otherwise you can install to see and shape the NAND memory of tablet.

IntelAndroidDrvSetupx.xxexe: We run this installer as an administrator with the tablet plugged in USB. This will install the ADB driver Intel, which appears in the Device Manager (Device Manager) for Windows. (See the picture Figure_1)

ManufacturingFlashTool_Setup_x.xxexe: This tool is used in the final planning "name" (branding) of the tablet and install the fastboot kernel. Install with administrator rights on the proposed application folder (hold down the name of the file for the next step).

- Upon completion of the installation of the Intel Manufacturing Tool, copy the file "CUSTOM_CONFIG.INI" into the folder that the tool was installed (the default is C: \ Program Files \ Intel \ Manufacturing Flash Tool).

The function is said to be installed and functional guest running on X98 Air 3G, host.

Once the installation of the guest operating, it becomes host to the tablet and just run it.

Not supported - for now - the simultaneous execution of Android & Windows.

Remove the microSD card that you probably have the tablet, before initiation.

From Windows host -> Android guest (conversion to Android tablet)

- Unzip the Android DnX BIOS directly into the Windows installation on X98 Air 3G.

- Run with administrative rights (from command line) flash.bat file inside the folder BIOS_X98_Air_3G_android. H process starts with the completion of the installation DnX BIOS displays the message "FPT Operation Passed".

- Turn off the tablet holding the POWER button for 10 seconds.

- Run Intel Manufacturing Tool as administrator.

- On the tablet, hold the VOL +, VOL- and POWER until you see the logo of the Teclast. The tablet will be "stuck" there, is perfectly normal. Connect the tablet to the USB port on your computer, so you will receive the following message: "Entering DnX mode. Waiting for fastboot command..."

- In the Device Manager of Windows (Device Manager), find the Android ADB Interface and right-click -> Properties (Properties). In the window that appears, go to the Details (Details) and there in the drop-down menu choose the Hardware ID (Hardware IDs). Our interest rates VID and PID, as shown in the picture Figure_2.

Transfer the VID and PID values ​​in the respective fields of Manufacturing Tool, section SoC Devices.

- Disables the tablet holding the POWER button for 10 seconds and disconnect the USB.

- We keep the tablet down the VOL- and POWER to enter the mode droidboot. Once this happens, connect the USB cable again, go to the Device Manager Windows (Device Manager) and - as before - we find the values ​​of the PID & VID Android ADB Interface (values ​​are different from the previous Figure_3

Transfer prices PID & VID Manufacturing Tool in their respective fields of unity "Android devices", so o Dialogue Manufacturing Tool will be something like shown in the picture. Press "Apply" and "OK" to save the parameters. Close the application.

- Disconnect the USB cable from the tablet and disable.

- Xanatrechoume the Intel Manufacturing Tool as managers and go to the menu File -> Open. There, choose the folder of ROM (X98_Air_3G_ (C6J6)), find the file "flash.xml" and open it.

- We keep the tablet down the VOL +, VOL- and POWER in order to display the logo of running Teclast DnX, connect the USB cable and Intel Manufacturing Tool begins the process of flashing Android ROM. Wait until the process is complete, disconnect the tablet from the USB and disable the X98 Air 3G."