How to read file as byte by AT Commands?

Hi everyone,

I want to download file from module to computer.I am using this commands, but it doesn’t seem to be working as I expected.

AT+QFOPEN=“test,wav”,0

+QFOPEN: 4

OK

AT+QFREAD=0
+CME ERROR: 405

Any solutions? Many thanks!

hello, what’s your current firmware version?