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To update the "Firmware" manually, first, it is necessary for the device to be turned off.

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Then click on “Disconnect” in the “Preferences” screen, so that the software will not send ping to device after the device is turned on.

3
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To get started, the RS232 dongle needs to be connected to its specific port on the back of the device Also, the device and the laptop must be connected via LAN cable.

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It can be seen that, after the device turns on, the "ERROR" light in the front panel of the device starts blinking.

5
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On the main page of the software, click on “Update Firmware in Flash Mode”.

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Then, you have to wait for the green bar to get filled. After that, a message will be displayed. By clicking on “OK”, you can finish updating the “Firmware”.

7
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Turn off the device and unplug the RS232 dongle.