FC41D Error and Firmware

IoT Modules Wifi Module
,
1

How can I update the firmware of the FC41 module? The reason for the update is that when I send the following AT commands:
“AT+QBLEGATTSSRV=FFF1\r\n”,
“AT+QBLEGATTSCHAR=FFF2\r\n”,
“AT+QBLEGATTSCHAR=FFF3\r\n”,
“AT+QBLEADVPARAM=150,150\r\n”,
“AT+QBLEADVDATA=0201060303FFF109094D41484D5554\r\n”

I either receive an error or no response at all.

2

Please initialize first AT+QBLEINIT=2
Note that the service can only be set once after initialization. If you want to change it, please reset the module