So, I've just upgraded the modem firmware to latest version and booted the openwrt initramfs, and the modem showed up:
cat /sys/kernel/debug/usb/devices
T: Bus=01 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=480 MxCh= 1
B: Alloc= 0/800 us ( 0%), #Int= 0, #Iso= 0
D: Ver= 2.00 Cls=09(hub ) Sub=00 Prot=01 MxPS=64 #Cfgs= 1
P: Vendor=1d6b ProdID=0002 Rev= 4.14
S: Manufacturer=Linux 4.14.146 ehci_hcd
S: Product=EHCI Host Controller
S: SerialNumber=ehci-platform
C:* #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr= 0mA
I:* If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub
E: Ad=81(I) Atr=03(Int.) MxPS= 4 Ivl=256ms
T: Bus=01 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 2 Spd=480 MxCh= 0
D: Ver= 2.00 Cls=ef(misc ) Sub=02 Prot=01 MxPS=64 #Cfgs= 1
P: Vendor=2cd2 ProdID=0001 Rev= 1.00
S: Manufacturer=MikroTik
S: Product=R11e-LTE
S: SerialNumber=000000000000
C:* #Ifs= 7 Cfg#= 1 Atr=c0 MxPwr=500mA
A: FirstIf#= 0 IfCount= 2 Cls=e0(wlcon) Sub=01 Prot=03
A: FirstIf#= 2 IfCount= 2 Cls=02(comm.) Sub=02 Prot=01
A: FirstIf#= 4 IfCount= 2 Cls=02(comm.) Sub=02 Prot=01
I:* If#= 0 Alt= 0 #EPs= 1 Cls=e0(wlcon) Sub=01 Prot=03 Driver=rndis_host
E: Ad=8c(I) Atr=03(Int.) MxPS= 16 Ivl=4096ms
I:* If#= 1 Alt= 0 #EPs= 2 Cls=0a(data ) Sub=00 Prot=00 Driver=rndis_host
E: Ad=8e(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E: Ad=0d(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
I:* If#= 2 Alt= 0 #EPs= 1 Cls=02(comm.) Sub=02 Prot=01 Driver=cdc_acm
E: Ad=84(I) Atr=03(Int.) MxPS= 16 Ivl=4096ms
I:* If#= 3 Alt= 0 #EPs= 2 Cls=0a(data ) Sub=00 Prot=00 Driver=cdc_acm
E: Ad=86(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E: Ad=05(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
I:* If#= 4 Alt= 0 #EPs= 1 Cls=02(comm.) Sub=02 Prot=01 Driver=cdc_acm
E: Ad=81(I) Atr=03(Int.) MxPS= 16 Ivl=4096ms
I:* If#= 5 Alt= 0 #EPs= 2 Cls=0a(data ) Sub=00 Prot=00 Driver=cdc_acm
E: Ad=83(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E: Ad=02(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
I:* If#= 6 Alt= 0 #EPs= 2 Cls=08(stor.) Sub=06 Prot=50 Driver=usb-storage
E: Ad=8b(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E: Ad=0a(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
dmesg
[ 14.768275] cdc_acm 1-1:1.2: ttyACM0: USB ACM device
[ 14.786782] cdc_acm 1-1:1.4: ttyACM1: USB ACM device
...
[ 17.037983] rndis_host 1-1:1.0 eth1: register 'rndis_host' at usb-ehci-platform-1, RNDIS device, ac:ff:ff:00:00:100
ls -lh /dev
crw-rw---- 1 root dialout 166, 0 Oct 5 12:51 ttyACM0
crw-rw---- 1 root dialout 166, 1 Oct 5 12:51 ttyACM1
lsusb
Bus 001 Device 002: ID 2cd2:0001
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Rebooted to initramfs again... and the modem is still there.
Flashed sysupgrade... and it's still there.
Rebooted again... still there. Honestly, not sure what to think. All that I did was:
- Install latest stable ROS (6.45.6)
- Connect with the modem to the network, had to enable roaming
- Upgrade the modem over its own connection
- Flash the same OpenWRT which I've already tested before