Steps:
1.Install Intel SOC Drivers:
iSocUSB-Driver-Setup-1.0.1.exe;

2.Install Intel Android USB Drivers:
IntelAndroidDrvSetup1.1.5.exe;

3.Install Intel Phone Flash Tool:
PhoneFlashTool_3.1.8.2_win32.exe

4. Open phone flash tool, then set Flag = 0x80000145 in File->Options->Advanced, then enable Force using this GP flag value

5. Select Flash -> From Local Flash File, then click browser to select SW zip package.

7. After unzip finish by the phone flash tool, click start to flash

8. Plug off tablet, then use usb cable to connect with PC.

Note: one device first flash, it will prompt you to install driver
