Hello,
i have a Fibocom L850 LTE module which works fine under linux in mbim mode with a usb3 adapter. When i connect it to my x86 machine with router os v7 beta it is recognised as PPP interface and no LTE interface brings up. What can i do?

You can create a supout.rif and send it to support@mikrotik.com or https://mikrotik.com/support

Hello,
i have a Fibocom L850 LTE module which works fine under linux in mbim mode with a usb3 adapter. When i connect it to my x86 machine with router os v7 beta it is recognised as PPP interface and no LTE interface brings up. What can i do?

the modem is compatible, how did you solve it?

According to Openwrt Rooter firmware, the Fibocom L850-GL supports MBIM mode:
https://forums.whirlpool.net.au/archive/3vx1k1r3-17

MBIM mode using the ATG+USBMODE=7 command

Is this possible from the Mikrotik Terminal?

https://www.fibocom.com/en/products/LTECat-L850-GL.html

What's the news since then? How supported is fibocom l850 in Mikrotik today?

As far as I remember, /lte at-chat support is included in ROS for this modem, starting with ROS 7.11.2rc and the command above should work.

@Sertik
from version 7.11 in the changelog it says this

*) lte - added "at-chat" support for Fibocom L850-GL modem; so it should be compatible .

If you can though look for a 5G modem as it has bandwidth priority over the bts repeater ,and so with an LTE module you would always have lower performance.

There is no 5G in Russia. So far only fairy tales or tests.

sertik,
I thought you also , you have 5G DSS which is a very bad system that basically uses the LTE band and gives priority of use to 5G devices . Basically a fake 5G
PS the fibocom L850-GL can be found at 740 rubles really affordable!|

Help please: I have a Fibocom L850-GL modem, usb3 adapter and RB5009 (ROS 7.13.5). When I connect the modem to the router - LTE interface does not appear, in system/resource/usb the modem is visible, in ports/usb it is written in red usb1 and port inactive. No AT commands can be entered.
On PC the modem works, it connects to the network. Modem mode is MBIM.
The following is written in the logs: lte2 mbim: error: wdm send failed: 19
Modem firmware version: 18500.5001.00.05.27.16
Should I upgrade the modem to some other firmware version? Or what else can be done?

you have to use a pci-e usb2.0 adapter the pinout on usb3 adapters does not power the modem.

This modem is m2... If I connect it via usb-hub with external power supply, will the problem be solved? I connected it to hAP ac², with the same adapter - it works fine there (hAP ac² has usb2 port). Or the usb3 port on RB5009 does not provide normal power? Another modem (tried G/4G M.2 Quectel EM12-G) - works fine on the same adapter.

I can't tell you exactly why certain adapters with usb3.0 connector connected to the router's usb3.0 don't work.I also had the same problem (with em160 modem), I replaced the 'adapter with a usb2.0 one and it worked.Try it cost a few euros on aliexpress

It is possible to try it, but then the usb3 is meaningless. Support advised to isolate pins - also as an option to try. Or try different modem firmware.
And so most likely incompatibility with ARM 64.

yes it doesn't make sense, try updating the firmware first (I only found the update tool but not the update file) then try a different usb2 adapter , covering the pins with tape doesn't seem like a good solution to me.

Here is a small guide to the firmware - https://radenku.com/upgrade-firmware-fi ... l-l860-gl/.
There is a link to the firmware catalog and how to extract the firmware.

I found this if you can use it https://techship.com/download/l860-gl-f ... and-guide/

Unfortunately it says this: "Permission denied. You don't have permission to access the page."

you must register

I remembered this site - you can only register companies there unfortunately. That's too bad.

I have downloaded it and posted it here: https://mega.nz/file/5HQUnBrT#XkOAXngWR ... 1R84yTb0fQ

I have downloaded it and posted it here: https://mega.nz/file/5HQUnBrT#XkOAXngWR ... 1R84yTb0fQ

Oh, thanks!

My L850-GL exhibited symptoms similar to the ones described by the OP of this topic, despite the USB adapter board being USB2.0 and seemingly working perfectly fine hardware-wise. Even with this topic and other two, here and here, I still found getting L850-GL to work with RouterOS a relatively confusing experience, so here's my take on it.

Three major things are seemingly required to make L850-GL work with RouterOS properly:

1. RouterOS version must be 7.11 or above. Some people report 7.15 and above not working correctly. I have not tested it this far. I also have not tested RouterOS 7 versions 7.11 or below. The versions I tested are: 7.12 (exactly), 7.14.3 (exactly), and they both worked for me. I also tested RouterOS 6.49.13, and it didn't appear to work, though I haven't really tried.
2. The firmware version of the L850-GL must be the one that works with RouterOS. People report version 18500.5001.00.05.27.16 working correctly. That is also the version provided in this article, mentioned in this topic. (Use Google Translate, it can do websites, even if you use Firefox. Use original site in another tab to open links to bypass Google being annoying.)
3. The modem itself must be configured correctly with AT commands, otherwise it will not show up in RouterOS as a proper lte interface.

I used the flash utility posted in this topic by @frank333 and files provided in the article mentioned above to flash the modem with the correct firmware version: I installed the drivers and the flash tool, rebooted, and flashed the modem (with all settings set as described in the article), replugging it when the flash tool asked me to. I did not follow the article's guide on extracting the firmware files from microsoft files, but instead used the zip-files provided in the article.

Then, I used PuTTY to open a serial connection to the modem (in Device Manager, under COM Ports, search for "Intel Mobile (acm2)"), at a baud rate of 115200 and other settings left at default. I then entered the following AT commands:


The first command was just to make sure that the firmware was flashed correctly and the version matched what I was flashing. The second command was to out of curiosity for what 'USB mode' it was in. (It was "0", if I'm not mistaken) The third command was to change it to the correct 'USB mode' (MBIM) so that it would show up in RouterOS as an lte interface. The fourth command was to make sure it isn't stuck permanently in flight mode or something. It returned "+CFUN: 1,0" for me, which was good. If it doesn't do that for you, you might wanna try running


which will check if the modem is in FCC lock mode. If FCC lock is disabled, it should return "0". There's what appears to be good info on how to unlock the modem in this GitHub repo.

I also issued "at@nvm:fix_cat_fcclock.fcclock_mode=0" and "at@store_nvm(fix_cat_fcclock)", but DON'T DO IT before reading the info in the GitHub repo above if the modem is in FCC lock mode. I am not responsible for any bricked modems. Anything you do you do at your own risk.

After doing all of this, I disconnected the modem from my PC, connected it to my router, and the modem finally showed up in lte interfaces. (It didn't show up immediately, but appeared after approximately 30 seconds to a minute)

Before doing all of this, nothing would show up in System > Ports, and under System > Resources > USB it would show up as some weird Intel device. Trying "/interface lte at-chat lte1 input=ATG+USBMODE=7" before changing modem 'USB mode' with the modem connected to my PC obviously didn't do anything because the lte interface wasn't there. I don't think I needed to set the Modem mode explicitly to MBIM in LTE interface settings in RouterOS, but give it a try if yours doesn't show up.