If there is a new version of firmware published form the wiki website X40 Firmware Update, you can download it to the TF card. The file type is .wfm and name: flash.
Click update it will update firmware automatically.
1. If there is a new version of UI published form the wiki website , you can download it to the TF card.
2.Download these two files:
5. When the printer is off, insert the TF card into the card slot at the back of the display screen, then power on, and the firmware upgrade interface will appear on the display screen.
Wait about 1 minute, SD Card Process is displayed on the screen. END! After that, the upgrade is complete. Turn off the power and remove the TF card.
If the following picture appears on the screen after the power is on, turn off the power and power on again, the upgrade interface shown in the image above will appear.