On the home page, tap the device icon in the top-right corner to open the device page, then select Device Firmware to open the Firmware Update screen.
Tap Install Update to start the update.

When the update is complete, the app shows the completion screen. Tap Home to go back to the home page.
Important: Do not close the app or go back while the firmware is updating. Doing so may seriously damage the printer.
Restart the printer, and it is ready to print.
