Hi, the same issue occurred to me with the LC79DAMD EVB Kit module, with the following error with the Firmware upgrade (GNSSFlashTool_V1.8 and LC79DANR01A05S_BETA0622_UPG)
2020-10-14 03:01:38 2020-10-14 03:01:37 ErrorCode:15050303 Error:Sends firmware upgrade command Error ;Note: Firmware upgrade command failed, Check the NMEA port is valid
The 1PPS LED indicator light has stopped working, previously it was shown in red.
Is it possible to correct this error? Does my module still work with the correct GNSS data?
I appreciate your response.