Good news, freelander pd800 has released their original english verison firmware.
Password is geekbuying.com
Update method looking here:
Step1, Download the firmware
Step2, Unzip the firmware, the decompressed file is shown as follows:
Step3, Driver installtion
Step4, Install the upgrade tool and upgrade:
As shown in the figure below, to upgrade the firmware has been automatically selected, directly next upgrade driver installation.