This tutorial is a bit clearer:
Here is a tutorial on how to upgrade your ZT-180 to the latest 0827 firmware.:
Before you start please ensure you are using a Windows 32 bit system (If you are not sure, watch the YouTube video).
Step 1) Download the 0827 Zenithink ZT-180 firmware located here: ZT-180_0827fw.rar
Step 2) With the tablet turned off, connect it to your computer using the OTG (mini) USB port.
Step 3) Turn on the tablet by holding down the Menu button (circular button on front face) and then pressing the Power button (located on the top of tablet when holding horizontally). Your commputer will indicate that it has found new hardware. Locate the driver for the ZT-180 which is located in the “USB Drivers” folder within the .rar image which you downloaded in Step 1 above. Install the USB device using the driver located in the USB drivers folder (if you do not know how to to do this please watch the YouTube video above).
Step 4) Once the drivers are correctly installed, open “burntool_v.07.2.exe” (located in the .rar file from Step 1 above). If the device has connected properly you should see a green rectangle in the top left as indicated in the picture below
Step 5) Click on settings and you will be prompted to enter the location of the various image files which are contained in the .rar file from Step 1 above. In the boxes outline, browse to and select the various image files. When done, click on “Save” which is going to the question mark button on the left (in the center at the bottom).
Step 6) Click “Start” in the top left and your tablet will begin to flash with the new firmware. You will see the status bar load to 100% four times (takes a few minutes). Once the process is complete, in the status bar at the bottom it should say “UpdatePipeState: 0×600000f 6″
Step 7) Turn off your tablet by holding the Power button down for 10 seconds and then releasing it. Press the power button again to power up the tablet. Your firmware upgrade is complete.