Users Manual

3.3.11 System upgrade
This function can be used to upgrade the terminal software.
(1) Place the interrupt upgrade package (zip file of the package named
"upgrade") in the root directory of the U disk.
(2) When the terminal is powered on, insert the U-disk into the USB port at the
bottom left of the terminal, and you can see that "in the process of upgrading,
please do not remove the U-disk". When the word "upgrade is ready, please
remove the U-disk to complete the upgrade" appears, unplug the U-disk, and
the terminal will restart automatically. After the startup is completed, the
upgrade is completed.
(3) You can view the device information, view the version number, and confirm
whether the upgrade is successful.
4.Device information
This function can be used to view device information.