I think many of you find there is no firmware for PD20 Great version sku20581/ sku20542/ sku20463 on the Freelander official download page.
I asked the manufacturer, they said PD20 Great and PD10 Deluxe share the same firmware.
You can download here
1. Install the VTC driver
Go to folder"烧录工具"> folder vtc driver , you can see three drivers for diferent PC OS.
Choose one and follow the installation wizard of your PC to install it.
2.Install the USB driver
Switch off the tablet, connect it with PC via USB cable.
keep the v+ pressed, keep the power key pressed, then realease them when the PC pops up "New device found"
Choose "Install from a list or specific location", click next step. Browse the usb driver file in the folder "烧录工具". Click next step to continue.
Select the three firmware file in the folder"PD10豪华 PD20大器K800三合一电脑升级固件0628" ,
drag them to the update tool interface, as following picture shows:
keep the power key for 5s to completely power off.
Plug in the charger (to ensure enough power supply for undate)
Hold the V+ ， then power key.
Release the keys when PC recognizes it.
Then the Area Map will shows:
Click "start" to upgrade.
It will finish upgrading 3min later.
Unplug the usb cable, press the power key for 5s to power off it , then boot it.