Per subject line. ROS v6.15 - 6.35.4 works fine with Jetpack 7730 tethered via USB, v6.36+ fails to assign LTE interface but Jetpack is seen correctly in Resources>>USB. Also tried 6.43rc64.

Another user has the same problem:

viewtopic.php?f=3&t=136324&p=671482&hil ... 30#p671482

I would be fine running 6.35 to regain this functionality, but the new RB 951 I bought to replace a 750 damaged by a nearby lightning strike won't accept a downgrade to that version as it came pre-loaded with 6.40.8.

This could be easy to fix - just take a look at the (lte) changes you made in 6.36 vs. 6.35.

Hoping for a solution. I now no longer have backup hardware for this particular site at which LTE is the only option for a small wired/wireless office network.

Update:

Got my hands on a Jetpack 6620L to try.

It works - after inserting relevant masquerade rule for LTE1.

So things aren't completely broken for 6.36+, it just doesn't recognize the 7730 as an LTE device.

More info:

When connecting the 6620, several connect/disconnect cycles occur before things settle down and the connection becomes stable.

If I then disconnect the 6620, and connect the 7730, the 7730 works. As long as I don't reboot the 951, it continues to work.

So, is anybody at Mikrotik going to address and fix this? It's quite obviously a problem that was introduced in firmware, which means I can't configure my way out of it on my end.

If you want it fixed, write to support. This is officially only user forum, they don't necessarily read all threads.

Did you ever find a solution for this problem? I'm attempting to connect my AT&T Elevate via USB to my router and I'm getting the same symptoms. It will recognize the mobile hotspot but the hotspot will get stuck in a loop of connecting and reconnecting to cellular network. I have an LTE hotspot with great reception but if I disable 3G and GSM in RouterOS(leaving LTE enabled) it won't connect to the hotspot anymore.

I've been pulling my hair out over this all day. Can you point me in the right direction?