Safely Reverting Zyxel NWA50AX PRO from OpenWrt to Stock Firmware
1. Download the Correct Stock Firmware
• Get the latest official `.bin` firmware for your device from Zyxel’s website.
2. Use the OpenWrt Web Interface (LuCI)
• Go to System > Backup / Flash Firmware.
• Upload the Zyxel `.bin` file.
• You may see an error: “Image metadata not present.” In this case, select Force upgrade only if you are certain the file is correct for your device.
• Confirm and proceed. The device will reboot if successful.
3. Important Safety Tips
• Double-check you have the exact firmware for your model.
• Forcing the wrong image can brick your device—proceed only if you’re sure.
• If the web method fails or the device becomes unresponsive, recovery via serial console and bootloader may be necessary.
4. Partition Note
• The NWA50AX PRO uses dual firmware slots (A/B). If you encounter issues, you may need to flash stock firmware again to ensure it’s written to the correct slot.
Summary:
Use the LuCI web interface and the official Zyxel firmware, choosing “Force upgrade” if prompted. Always verify the firmware file, and be aware of the dual-slot system. Serial recovery is only needed if web flashing fails or the device is bricked.