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data for how to upload the propaganda pictures.)
Operation:
Press “▲/▼” to preview the propaganda pictures in the device. Click
OK to delete all these pictures. After deletion, the next picture will
appear. Click “delete all” to delete all the propaganda pictures in the
device. Then press “ESC” to return to data management interface.
4.3 Upgrade firmware
Update the firmware by utilizing the USB Pen Drive (flash drive)
Notice: If you need such upgrade file, please contact technician.
Usually, firmware upgrade is not recommended.
Operation:
Insert U disk with upgrade file into the slot. The device will identify the
file automatically. The device will give prompt whether it is successful
or not.
F18 User Manual V1.0
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