LTAP Mini LTE kit - LTE interface dissapears after reboot

mibauer1701 · Mon Sep 17, 2018 7:38 pm

Hi,

recently I´ve bought a LTAP Mini LTE Kit for my RV.
The LTAP mini is powered over 12V DC.

LTE, WiFi, Ethernet, GPS works pretty fine for a couple of weeks, but suddenly LTE disappears after reboot. After a powercycle it´s back running, but after each reboot it´s gone. There´s also no way to re-enable it or something else. Power cycling was the only way to re-enable the LTE Interface.
Even a complete Configuration Reset was not helpful.

That´s make me not really happy/unhappy, but I can live with that so far but...:

Yesterday I´ve upgraded to the newest Firmware (6.43), in hope this could may fix the problems I´m facing.

-> The LTE issue is still the same. No LTE Interface after reboot.

So, as usual I made a power cycle, but now LTE AND WiFi Interfaces are gone! No WiFi, no LTE anymore, even after some powercycles and some time without power at all. There´s no way I found to re-enable them.

No this is a real game changer for me! This is not acceptable at all!

So, Dear Mikrotik Team or Community: Could you please provide me a Bugfix? Is there something to do? Do I miss something?

Thanks in Advace!

Michael

yiucsw · Fri Sep 28, 2018 6:27 am

I have the same problem, LTE interface disappear randomly, especially on USB power.
then I upgrade the Routeros to latest edition. now the LTAP is brick... There is no WLAN available after netinstall.. ether1 is not enable for DHCP.
i.e. the LTAP become inaccessible...
not to mention that switch SIM will reset all WLAN interface, what a flaw design.

how can i bring back the LTAP.

yiucsw · Fri Sep 28, 2018 7:33 am

Just success enter Winbox, found out that after netinstall, WLAN is disabled, no ip, no bridge, there is no default configuration... After reset configuration, and default configuration come back.
The LTAP is a very bad design....

ea1dbb · Fri Oct 12, 2018 7:24 pm

I`ve bought another ltap mini last week. Accessed by winbox without problem but i can not define a lte interface. I've tried with two different sim cards same ISP. Could you please make an appointment or help ? I'm so scared.

Mon Oct 15, 2018 10:27 am

please contact support@mikrotik.com about those issues so we could isolate them and provide a fix for each of that.

lalvarezf10 · Tue Jun 09, 2020 12:10 am

Has anybody found a solution for this problem? Having same issue.

SiB · Fri Jun 12, 2020 3:13 am

Has anybody found a solution for this problem? Having same issue.

use latest ROS and latest modem firmware and you will be good.

Give us logs if you have a problem.

Sun Aug 02, 2020 5:23 am

Has anybody found a solution for this problem? Having same issue.
use latest ROS and latest modem firmware and you will be good.

Give us logs if you have a problem.

Latest long-term with latest modem firmware has the same issue. No LTE interface after reboot. Everything gets back to normal after power cycle.

Will try latest stable.

Sun Aug 02, 2020 8:13 am

Latest stable (6.47.1) with modem firmware MikroTik_CP_2.160.000_v017 work well after reboots.

Mon Aug 03, 2020 5:32 am

Forget my previous post... after one day, LTE interface is gone after reboot.

krafg · Mon Aug 03, 2020 5:28 pm

Contact to Mikrotik support.

Regards.

Mon Aug 03, 2020 5:41 pm

Contact to Mikrotik support.

Regards.

Sure, I'm getting all the required information to send them a full report.

ZupoLlask · Sat Aug 08, 2020 7:37 pm

Is your LTAP Mini a R1 or a R2?

You can check that in the System » RouterBOARD menu: if it says "R2" or "release 2" somewhere it is R2, otherwise it is R1.

Sat Aug 08, 2020 8:05 pm

Mine was R2. I already RMA-ed the device due to lack of response from official MikroTik support (SUP-23837).

The new one (also R2) has modem firmware MikroTik_CP_2.160.000_v012 and works fine. I won't upgrade to MikroTik_CP_2.160.000_v017 until I get some kind of response from official support.

Also, I've been digging in the supout.rif files and found that the LTE interface doesn't show up when it is presented as NEZHA instead of R11e-LTE

When LTE interface is detected

2020.08.03-02:42:27.19@0: add@/devices/platform/rb400-ehci.0/usb1/1-1
2020.08.03-02:42:27.19@0:   MAJOR=189
2020.08.03-02:42:27.19@0:   MINOR=3
2020.08.03-02:42:27.19@0:   DEVNAME=bus/usb/001/004
2020.08.03-02:42:27.19@0:   DEVTYPE=usb_device
2020.08.03-02:42:27.19@0:   DEVICE=/proc/bus/usb/001/004
2020.08.03-02:42:27.19@0:   PRODUCT=2cd2/1/100
2020.08.03-02:42:27.19@0:   TYPE=239/2/1
2020.08.03-02:42:27.19@0:   BUSNUM=001
2020.08.03-02:42:27.19@0:   DEVNUM=004
2020.08.03-02:42:27.20@0: usb info: R11e-LTE,,1
2020.08.03-02:42:27.20@0: driver not found

When LTE interface is NOT detected

2020.08.03-14:46:31.02@0: add@/devices/platform/rb400-ehci.0/usb1/1-1
2020.08.03-14:46:31.02@0:   MAJOR=189
2020.08.03-14:46:31.02@0:   MINOR=1
2020.08.03-14:46:31.02@0:   DEVNAME=bus/usb/001/002
2020.08.03-14:46:31.02@0:   DEVTYPE=usb_device
2020.08.03-14:46:31.02@0:   DEVICE=/proc/bus/usb/001/002
2020.08.03-14:46:31.02@0:   PRODUCT=1286/8130/0
2020.08.03-14:46:31.02@0:   TYPE=255/255/255
2020.08.03-14:46:31.02@0:   BUSNUM=001
2020.08.03-14:46:31.02@0:   DEVNUM=002
2020.08.03-14:46:31.02@0: usb info: NEZHA,,1
2020.08.03-14:46:31.02@0: driver not found
...
2020.08.03-14:46:34.62@0: add@/devices/platform/rb400-ehci.0/usb1/1-1
2020.08.03-14:46:34.62@0:   MAJOR=189
2020.08.03-14:46:34.62@0:   MINOR=2
2020.08.03-14:46:34.62@0:   DEVNAME=bus/usb/001/003
2020.08.03-14:46:34.62@0:   DEVTYPE=usb_device
2020.08.03-14:46:34.62@0:   DEVICE=/proc/bus/usb/001/003
2020.08.03-14:46:34.62@0:   PRODUCT=1286/8130/0
2020.08.03-14:46:34.62@0:   TYPE=255/255/255
2020.08.03-14:46:34.62@0:   BUSNUM=001
2020.08.03-14:46:34.62@0:   DEVNUM=003
2020.08.03-14:46:34.62@0: usb info: NEZHA,,1
2020.08.03-14:46:34.62@0: driver not found

SiB · Mon Sep 14, 2020 1:23 pm

I know one case when flashing via usb wwan adapter to "MikroTik_CP_2.160.000_v017" fix similar problem.
Maybe write to support@mikrotik.com (Again).

frayoshi · Tue Feb 06, 2024 7:20 am

Very same problem with the ATL after a firmware upgrade some months ago.. solves an USB reset when that happens... (need to write a check-script for it) sometimes a reboot, a couple times, is necessary. Worked flawlessly before the firmware upgrade... super weird... happened also with the old LtAP LTE some years ago, but apparently solved by itself at some point.. Those upgrades are super destructive, or I've been particularly unlucky

Maybe a re-flash of the firmware might help.. as that seems to be the culprit... Should investigate how to do that manually..

LTAP Mini LTE kit - LTE interface dissapears after reboot

LTAP Mini LTE kit - LTE interface dissapears after reboot

Re: LTAP Mini LTE kit - LTE interface dissapears after reboot

Re: LTAP Mini LTE kit - LTE interface dissapears after reboot

Re: LTAP Mini LTE kit - LTE interface dissapears after reboot

Re: LTAP Mini LTE kit - LTE interface dissapears after reboot

Re: LTAP Mini LTE kit - LTE interface dissapears after reboot

Re: LTAP Mini LTE kit - LTE interface dissapears after reboot

Re: LTAP Mini LTE kit - LTE interface dissapears after reboot

Re: LTAP Mini LTE kit - LTE interface dissapears after reboot

Re: LTAP Mini LTE kit - LTE interface dissapears after reboot

Re: LTAP Mini LTE kit - LTE interface dissapears after reboot

Re: LTAP Mini LTE kit - LTE interface dissapears after reboot

Re: LTAP Mini LTE kit - LTE interface dissapears after reboot

Re: LTAP Mini LTE kit - LTE interface dissapears after reboot

Re: LTAP Mini LTE kit - LTE interface dissapears after reboot

Re: LTAP Mini LTE kit - LTE interface dissapears after reboot