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I’m trying to use the FTP feature on Quectel UC20 module with the sixfab’s Raspberry shield.
Everything is ok except File AT commands “AT+QFUPL” and “AT+QFDWL”.
I can see files in the RAM space with “AT+QFLST”, open and close it but not read nor write.
For all these commands (UPL, DWL, WRITE and READ) the module replies “ERROR”, not “+CME ERROR”
Please contact Quectel support for this issue.