RAK5860 (BG77) GNSS AT commands missing (QGPS/QGNSS/CLAC/CEER all ERROR)

WisBlock
1

Hi RAK team,
I’m testing a RAK5860 (WisBlock LTE/NB-IoT board with Quectel BG77) on a RAK4631. The product page indicates GNSS support and my kit was shipped with a GPS antenna, but I can’t access any GNSS AT commands at all.

Setup

  • Host: RAK4631 (nRF52)
  • Modem: RAK5860 / Quectel BG77
  • UART: Serial1 @ 115200 (AT passthrough)
  • Power/enable: PWR_EN + PWRKEY controlled (modem replies to AT fine)

Module info

ATI
Quectel
BG77
Revision: BG77LAR02A04
OK

AT+QGMR
BG77LAR02A04_01.204.01.204
OK

Issue
All GNSS-related commands return ERROR :

AT+QGPS=?     -> ERROR
AT+QGPS=1     -> ERROR
AT+QGNSS=1    -> ERROR

Even some diagnostic / capability commands return ERROR :

AT+CLAC       -> ERROR
AT+CEER       -> ERROR
AT+QCFG="urc/port",? -> ERROR
AT+QCFG="urc/ri",?   -> ERROR

I also tried setting AT+CFUN=4 to disable WWAN (since your docs note BG77 can’t run WWAN+GNSS concurrently), but after AT+CFUN=4 + OK , AT+CFUN? reports +CFUN: 1 again.

Questions

  1. Is the RAK5860 shipped with a BG77 variant/firmware that does NOT include GNSS AT commands by default?
  2. If GNSS is supported, which exact AT command set should I use on BG77LAR02A04 with RAK5860? (QGPS/QGNSS both missing here.)
  3. Is there an approved firmware update path for RAK5860 (QFlash via USB DM, DFOTA, etc.) and can you provide the correct firmware package/version that enables GNSS AT?
  4. Can you confirm the exact BG77 SKU/part number used on RAK5860 units that are advertised with GNSS?

Any guidance or a known-good firmware version would be appreciated.
Thanks!