Your system is rock-stable, you cannot afford 30 minutes of downtime, or you have a "no-name" clone unit that claims ZWNAV compatibility (brand spoofing is common).
Once you have downloaded the correct update package (usually named update.zip or px6-10.0-2024.zip ), follow this procedure meticulously. zwnav firmware
Voiding your warranty and permanent bricking if the MCU code is incompatible. Only attempt this if you have a full backup of your original ZWNav firmware via a tool like RKDevTool or SP Flash Tool . Your system is rock-stable, you cannot afford 30
Go to Settings > System > About Device to check your current MCU and Android version. Your system is rock-stable
The unit will reboot into a recovery screen. Do not turn off the car or disconnect power during this process. Expert Tips & Troubleshooting