Zwnav Firmware -
: Optimized for Rockchip (RK3399) and Qualcomm Snapdragon 662/665 chipsets.
Updating ZWNAV firmware requires careful attention to detail. Here is a general guide based on community experiences: zwnav firmware
Once finished, the unit will reboot. You may need to re-calibrate the touchscreen or reset your radio stations. Where to Find ZWNAV Firmware? : Optimized for Rockchip (RK3399) and Qualcomm Snapdragon