AG553Q – Current Firmware Lacks MQTT AT Commands, Request for MQTT-Enabled Firmware

Hello,

I am working with an AG553Q module running firmware version AG553QEUABR03A03M8G_OCPU (identified via AT+CGMR / AT+QGMR). When I issue the AT+CLAC command to list all supported AT commands, I do not see any MQTT-related commands (such as QMTOPEN, QMTCONN, QMTPUBEX, etc.). Only +QMSSR appears in the list.

Because of this, I am unable to use the module’s AT command interface to connect to an MQTT broker or publish/subscribe to topics.

My requests are:

  1. Please confirm whether the current firmware truly does not include the MQTT AT-command set.
  2. If MQTT support is not included, is there an alternate AG553Q firmware version that provides the full MQTT AT command set?
  3. If such a firmware exists, could you provide instructions or resources for obtaining and safely flashing it to the AG553Q?
  4. Could you please forward the AG55x MQTT application note, or any other relevant 5G MQTT application notes?

Thank you in advance for your assistance. I can provide additional details (e.g. serial number, hardware revision) if needed.

Additionally:

AT+CLAC
+QMIC
+QRXGAIN
+QAUDPLAYGAIN
+QAUDRDGAIN
+QEEC
+QAUDMOD
+QGPS
+QGPSLOC
+QGPSCFG
+QGPSGNMEA
+QGPSDEL
+QGPSEND
+QGPSXTRA
+QGPSXTRATIME
+QGPSXTRADATA
+QGPSSUPLURL
+QGPSSUPLCA
+QTEMP
+QTEMPDBG
+CFUN
$QCPWRDN
+QDRACT
+QCANACT
+QDRTEST
+QDRRP
+QTEST
+QNAND
+QFTEST
+QFTCMD
+QADC
+QIPTEST
+QSUBSYSVER
+QWSETMAC
+EBTADDR
+QETH
+QABFOTA
+QWSSID
+QWMOCH
+QWIFI
+QWAUTH
+QFCT
+QMSSR
+QTHERMALZONE
+QCOOLINGDEV
+CUTEST1
+CUTEST2
$QCSIMSTAT
$QCPBMPREF
$CREG
$CCLK
$QCCNMI
*CNTI
$QCCLR
$QCDMR
$QCDNSP
$QCDNSS
$QCTER
$QCSIMAPP
$QCPINSTAT
$QCPDPP
$QCPDPLT
$QCDGEN
$QCPDPCFGE
$QCANTE
$QCRPW
$QCSQ
$CSQ
$QCSYSMODE
$QCCTM
$QCBANDPREF
^SYSINFO
^SYSCONFIG
^CARDMODE
^DSCI
$QCVOLT
$QCHWREV
$QCBOOTVER
$ECALL
$QCDEFPROF
$QCMRUE
$QCMRUC
$QCAPNE
$QCPDPIMSCFGE
$QCCLAC
^SPN
$QCRMCALL
$QCDRX
$QCRSRP
$QCRSRQ
$QCACQDBC
$QCATMOD
$QCCOPS
^MODE
$QCSIMT
$QCNSP
$QCRCIND
$QCCSGCOPS
$QCPDPCFGEXT
$QCPRFCRT
$QCPRFMOD
$QCRSCP
$QCECNO
$QCPCOLIST
$QCMSISDN
$QCPCOMSISDN
$QCCALLATTR
$QCIMSSRV
$QCCCFC
OK

Hi,
AG553 is automotive module which is not support application development with AT. Automotive module supports open solution which provides SDK for application development. Please contact Quectel local support to get SDK.