¶ Firmware upgrade
For networked printers, when the cloud detects that the printer's firmware version is not the latest, it will push an update notification to the device. Once the user chooses to upgrade, the printer will download the firmware from the cloud. Subsequently, the printer's main circuit board will check the model of each key component circuit board, and specifically push and receive data from each key component circuit board to ensure that the upgrade goes smoothly.
¶ Fault phenomenon
¶ Causes of failure
Common reasons for firmware upgrade failure include:
- TH board hardware version mismatch
- Abnormal connection between printer and cloud network or insufficient storage space on SD card, resulting in firmware download failure.
- Specific firmware version does not support cross-version upgrade.
- TH signal cable is not properly plugged in.
- Hardware failure of mainboard and TH board
¶ Troubleshooting measures
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Upgrade abnormality after replacing TH board.
If you have replaced TH board before upgrading, it may be because the hardware version of TH board is incompatible with the firmware version. Please submit a technical ticket and upload the log. -
Unplug and plug the USB-C cable between TH board and mainboard and try again.
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Check and eliminate network abnormalities.
Reference: HMS_0500-0200-0002-0008 Time synchronization failed
- Restart the printer after restoring factory settings
- Switch to another wireless network or use a 2.4G mobile hotspot
- NTP service connection test
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Check the SD card storage space. If there is insufficient space, format the SD card and try again.
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If the above steps do not solve the problem, it may be a hardware failure of the circuit board or the connection cable. Please submit a technical ticket and upload the log.
¶ End Notes
We hope the detailed guide provided has been helpful and informative.
To ensure a safe and effective execution, if you have any concerns or questions about the process described in this article, we recommend submitting a technical ticket regarding your issue. Please include a picture or video illustrating the problem, as well as any additional information related to your inquiry.