I have two HL7812 modules which I switched to USB comms to update FW ( AT+KUSBCOMP=1), one of the devices updated FW (HL7812.5.7.3.0) ok but after the update it became unresponsive over USB. The second device never connected to USB. The boot screen from UARTO states it is still configured for USB i…

HL7812 USB failure

jyijyi June 20, 2025, 2:16pm 13

How about this?

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