Device Model GL-MT3000 Beryl AX
Firmware version 4.6.0 alpha1
Network topology diagram
How is your router connected to the Internet? This is the problem. I want to use my AC313U (AT&T Momentum rebranded Sierra Wireless now Netgear) as WAN
By cell phone? (If yes, which mobile provider?) AT&T 4G LTE via the USB dongle aka AirCard
Which DNS server do you use? (The local one of your ISP? AdGuard Home? Another one?) Usually Quad 9 Primary with CloudFlare as Secondary. Sometimes I use ISP or other.
Do you use DHCP or static IP addresses? I use DHCP with several reservations.
Problem description
I use AT&T Momentum (AC313U Sierra Wireless) AirCard for WAN on a Cradlepoint MBR-1200B now but it is long EOL (10 years).
I have also used this AirCard directly in Laptops running Windows 7 and 10 where it operates as RNDIS or other network adapter. I have also used in Ubuntu where it is detected as a RNDIS or Fast Network adapter.
The MT-3000 partially detects the USB and stays in storage mode or the install CD mode. Not sure which.
Logs show it is a storage device. It also has storage slot for micro-SD but none is installed. The status light on the dongle flashes slowly as if it is waiting for commands.
I originally tried flashing OpenWRT 23.05 and loading many modules for USB modem, Serial, QMI and SierraWireless but didn’t even get the AirCard to be detected as any device in UI.
So I have now flashed the GL 4.6.0 alpha1 firmware and use the GL-inet UI.
I think this is a modeswitch issue. I found the Vendor and Product IDs to change the json file but I do not know which port or command to set in the file.
I didn’t see any such reference in dmesg or the logs but it is in the kernel/debug/usb . lsusb doesn’t show anything. No TTYxUSB are created.
I have experience with Linux and Administration but only at basic-intermediate level. I have experience compiling drivers for network and C programs from long ago but no real use in last 20 years.
I don’t mind editing some config files and similar but if this requires compiling or linking, to resolve my issue I may just return or sell the device.
I saw some posts from other user using a newer version of the AirCard (AC340 AT&T Beam?) in another device and they had to get the usb-mode.json file modified which is now in standard build.
I would liike some sort of step by step to get this AirCard working in Automatic connect fashion to provide more secure / reliable internet.
BTW the kernel/debug/usb entry has this;
T: Bus=01 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 3 Spd=480 MxCh= 0
D: Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1
P: Vendor=0f3d ProdID=68aa Rev= 0.06
S: Manufacturer=Sierra Wireless, Incorporated
S: Product=AirCard 313U
S: SerialNumber=012615001832493
C:* #Ifs= 7 Cfg#= 1 Atr=a0 MxPwr=500mA
I:* If#= 0 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=(none)
E: Ad=81(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E: Ad=01(O) Atr=02(Bulk) MxPS= 512 Ivl=4ms
I:* If#= 1 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=(none)
E: Ad=82(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E: Ad=02(O) Atr=02(Bulk) MxPS= 512 Ivl=4ms
I:* If#= 2 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=(none)
E: Ad=83(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E: Ad=03(O) Atr=02(Bulk) MxPS= 512 Ivl=4ms
I:* If#= 3 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=ff Driver=(none)
E: Ad=84(I) Atr=03(Int.) MxPS= 64 Ivl=2ms
E: Ad=85(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E: Ad=04(O) Atr=02(Bulk) MxPS= 512 Ivl=4ms
I:* If#= 4 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=ff Driver=(none)
E: Ad=86(I) Atr=03(Int.) MxPS= 64 Ivl=2ms
E: Ad=87(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E: Ad=05(O) Atr=02(Bulk) MxPS= 512 Ivl=4ms
I:* If#= 9 Alt= 0 #EPs= 2 Cls=08(stor.) Sub=06 Prot=50 Driver=usb-storage
E: Ad=06(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E: Ad=88(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
I:* If#= 7 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=ff Driver=(none)
E: Ad=89(I) Atr=03(Int.) MxPS= 64 Ivl=2ms
E: Ad=8a(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E: Ad=07(O) Atr=02(Bulk) MxPS= 512 Ivl=4ms
Appreciate any help I can get. 
EDIT: Forgot to load log Export
logread.tar (94 KB)
