I’m having the same problem: I can’t connect to my private 5G network with the RG255C module on Windows. What AT commands are needed?
Thanks in advance.
Dear @Rafa
Please share your private 5G network information, like band and bandwidth.
Hi Silvia
These are the properties of my private 5G network:
Cell pci=1, bw=20 MHz, 1T1R, dl_arfcn=627340 (n78), dl_freq=3410.1 MHz, dl_ssb_arfcn=626976, ul_freq=3410.1 MHz
Bandwidth: 20 MHz
Band: N78
Firmware version:
AT+QGMR
RG255CGLABR01A04M4G_A0.003.A0.003
Thanks in advance
Dear @Rafa
I have sent to you via Message, please try.
It works. Thank you.
Do you have the link to AT commands manual for RG255C-GL?
I am observing same issue, n77 BW 60MHz.
How do I disable LTE? under at command qnwprefcfg ue_capability_band, I see LTE band 2 and NR5G n77. Its able to scan the 99999 plmn 5G network but no registration attempt.
I will change BW to 20MHz and try but please let me know if I am missing something.
Please advise.
Thanks
Hi @silvia
I have changed the BW to 20MHz now
Cell details are as follows
PLMN: 99999
BW: 20MHz
Band N77
QAM DL/UL: 256
Its still not making any RACH or REG attempts. Please help
Dear @Rafa
I have sent to you via Message, please check.
Dear @Abdullah
I have sent to you via Message, please check.
I got the manual. Thanks a lot
Hi,
I recently ordered a Quectel RG255C-GL module.
I use a hat pcie M2 to connect my module to a raspberry pi 5.
I use a Rasberry OS on it.
I would like to know if you have a documentation that details the modifications to be made in detail to modify the linux Kernel with the necessary drivers? I’ve only found the document: quectel_umts_lte_5g_linux_usb_driver_user_guide_v3-2.pdf which illustrates the modifications to be made in the various files.
Or do you have a preconfigured OS that might be suitable?
Currently,
What’s working:
- 5G modem detected as USB device after plugging into M.2 slot
- USB option patched Linux kernel driver so virtual serial ports are exposed on USB
- Able to use SIM using modem interface
- SIM active
What’s not working:
- Unable to attach to a cellular network
I can’t install the qmi_wwan driver and I guess the problem comes from there.
Thanks in advance for your answers!
Best regards,
Augustin
Dear @Jayddy
Could you have access to AT command？
If yes, please check AT+COPS? and check whether register or not.
Dear @silvia
I am experiencing similar issues with my RG255C-GL device on a raspberry Pi4 hat when trying to join a private network (N78 band, 20MHz) with QMI driver.
AT+QNWPREFCFG= "nr5g_band"AT+QNWPREFCFG= “nr5g_band”
+QNWPREFCFG: “nr5g_band”,78
OK
AT+QNWPREFCFG= “nr5g_band”
+QNWPREFCFG: “nr5g_band”,78
OK
AT+QGMR
RG255CGLABR01A04M4G_A0.002.A0.002
OK
AT+COPS?
+COPS: 2
root@qhat20:/usr/local/bin# lsusb -t
/: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/4p, 5000M
/: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/1p, 480M
|__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/4p, 480M
|__ Port 1: Dev 4, If 0, Class=Vendor Specific Class, Driver=option, 480M
|__ Port 1: Dev 4, If 1, Class=Vendor Specific Class, Driver=option, 480M
|__ Port 1: Dev 4, If 2, Class=Vendor Specific Class, Driver=option, 480M
|__ Port 1: Dev 4, If 3, Class=Vendor Specific Class, Driver=qmi_wwan_q, 480M
root@qhat20:/usr/local/bin# lsusb
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 004: ID 2c7c:0316 Quectel Wireless Solutions Co., Ltd. RG255C-GL
Bus 001 Device 002: ID 2109:3431 VIA Labs, Inc. Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
should I upgrade the firmware?
Thanks
Thierry
Dear @silvia ,
Thank you for your answer
I have a radio configuration, Bubble 5G on 20 MHz band 77
Here are some details with Modem Manager
mmcli -m 0
General | path: /org/freedesktop/ModemManager1/Modem/0
| device id: 334693b9fffc7ee72b7cfc14711ea0253e851597
Hardware | manufacturer: Quectel
| model: RG255C-GL
| firmware revision: RG255CGLABR01A04M4G
| supported: gsm-umts
| current: gsm-umts
| equipment id: 864624060196005
System | device: /sys/devices/platform/axi/1000110000.pcie/pci0001:00/0001:00:00.0/0001:01:00.0/usb1/1-1/1-1.1
| drivers: option
| plugin: quectel
| primary port: ttyUSB2
| ports: ttyUSB2 (at)
Status | unlock retries: sim-pin (3), sim-puk (10), sim-pin2 (3), sim-puk2 (10)
| state: enabled
| power state: on
| signal quality: 0% (recent)
Modes | supported: allowed: any; preferred: none
| current: allowed: any; preferred: none
IP | supported: ipv4, ipv6, ipv4v6
3GPP | imei: 864624060196005
3GPP EPS | ue mode of operation: csps-1
SIM | primary sim path: /org/freedesktop/ModemManager1/SIM/0
lsusb -t
/: Bus 06.Port 1: Dev 1, Class=root_hub, Driver=xhci-hcd/1p, 5000M
/: Bus 05.Port 1: Dev 1, Class=root_hub, Driver=xhci-hcd/2p, 480M
|__ Port 2: Dev 2, If 0, Class=Human Interface Device, Driver=usbhid, 1.5M
/: Bus 04.Port 1: Dev 1, Class=root_hub, Driver=xhci-hcd/1p, 5000M
/: Bus 03.Port 1: Dev 1, Class=root_hub, Driver=xhci-hcd/2p, 480M
|__ Port 1: Dev 2, If 0, Class=Human Interface Device, Driver=usbhid, 12M
|__ Port 1: Dev 2, If 1, Class=Human Interface Device, Driver=usbhid, 12M
|__ Port 1: Dev 2, If 2, Class=Human Interface Device, Driver=usbhid, 12M
/: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/4p, 5000M
/: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/1p, 480M
** |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/4p, 480M**
** |__ Port 1: Dev 3, If 0, Class=Vendor Specific Class, Driver=option, 480M**
** |__ Port 1: Dev 3, If 1, Class=Vendor Specific Class, Driver=option, 480M**
** |__ Port 1: Dev 3, If 2, Class=Vendor Specific Class, Driver=option, 480M**
** |__ Port 1: Dev 3, If 3, Class=Vendor Specific Class, Driver=option, 480M**
I don’t have the right driver, I only have option when I should have qmi_wwan_q driver. Or another driver. I’m using a RG255C-GL M2 module, a hat M2 5G and a raspberry pi 5 with a Raspberry linux operating system.
Do you have a bone to put on my Raspberry pi with a driver adapted to my use case?
I enclose some AT commands:
AT+CPIN?
+CPIN: READY
OK
My sim is well read
AT+COPS?
+COPS: 0
OK
It should automatically select a bubble
AT+COPS=?
+COPS: (1,“Test PLMN 1-2”,“Test1-2”,“00102”,12),(3,“Free”,“Free”,“20815”,7),(3,“Free”,“Free”,“20816”,7),(3,"F-Bouygues Teleco
ERROR
He can see my private 5G bubble.
AT+CFUN?
+CFUN: 1
It’s not in airplane mode
AT+CEREG?
+CEREG: 0,0
The module searches for a network
AT+CGDCONT?
+CGDCONT: 1,“IPV4V6”,“”,“0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0”,0,0,0,0,“”,0
+CGDCONT: 2,“IPV4V6”,“ims”,"0.0.0.0.0.0.0
AT+CGDCONT=1,“IPV4V6”,“internet”
OK
AT+CGDCONT?
+CGDCONT: 1,“IPV4V6”,“internet”,“0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0”,0,0,0,0,“”,0
+CGDCONT: 2,“IPV4V6”,“ims”,"0.0.0
Manual addition of APN
AT+QGMR
RG255CGLABR01A04M4G_A0.004.A0.004
OK
My driver version
AT+QNWPREFCFG=“mode_pref”
+QNWPREFCFG: “mode_pref”,AUTO
OK
AT+QNWPREFCFG=“ue_usage_setting”
+QNWPREFCFG: “ue_usage_setting”,0
OK
AT+COPS=1,2,“00102”,12
+CME ERROR: 30
Try to force the connection
AT+QSCAN=2
+QSCAN: “NR5G”,208,20,640320,800,-108,-13,-1,1
+QSCAN: “NR5G”,208,01,153630,748,-102,-12,26,0
+QSCAN: “NR5G”,208,15,643392,970,-,-,-,1
+QSCAN: “NR5G”,208,16,643392,970,-,-,-,1
+QSCAN: “NR5G”,001,02,660576,94,-103,-14,-1,1
+QSCAN: “NR5G”,208,01,650400,748,-109,-12,-1,1
OK
Scanning I can see my private bubble
Please do not hesitate if you have any further questions/needs
Thank you,
Augustin
Dear @turletti
I have sent the AT commands to you, please try.
Dear @Jayddy
I have sent the AT commands to you, please try.
i think i have the same issue as
could you please you please also send me the same AT commands?
I have already tried:
- imei spoofing
- firmware upgrade (from RM520NGLAAR03A03M4G_01.201.01.201 => to RM520NGLAAR03A04M4G_01.204.01.204)
thanks
E.
Dear @endre
Please share your SA information,n77 or n78, bandwidth.
hi @silvia
first i messaged my provider… …and it turned out they had not configured the mast for SA, only for NSA.
after i messaged them they quickly configured and told me.
right now, without any modification / config, my rm520N is connected and working on 5g SA.
kind regards,
E,