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lami16
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Posts: 3
Joined: Fri May 07, 2021 3:08 pm

LTE connection is dead on wAP ac LET6 kit

Mon Sep 26, 2022 1:29 pm

Hi Everyone!

My LTE router seems to be having issues getting LTE connection.
It appears to be connecting to the cell tower, pin is ok, status is registered but not a single bit comes in or out.
(And yes I know a newer LTE firmware is available, but it used to work more or less fine with the old one, and now it is not. And I could not find a way to manually upgrade the LTE firmware.)
I managed to update manually the RouterOS from 6.48.2 to 7.5.

I did a lot of googling and reading forum posts, and I provide below the logs which were usually asked by others.
sys rou pr
       routerboard: yes
        board-name: wAP R ac
             model: RBwAPGR-5HacD2HnD
          revision: r2
     serial-number: C00E2C60AFB5
     firmware-type: ipq4000L
  factory-firmware: 6.44.5
  current-firmware: 7.5
  upgrade-firmware: 7.5

/interface lte monitor lte1 once
                   ;;; A newer version of modem firmware is available!
           pin-status: ok
  registration-status: registered
        functionality: full
         manufacturer: "MikroTik"
                model: "R11e-LTE6"
             revision: R11e-LTE6_V020
     current-operator: 21610
                  lac: 5122
       current-cellid: 76545
               enb-id: 299
            sector-id: 1
           phy-cellid: 229
    access-technology: LTE
                 imei: 356632214100766
                 imsi: 216000230001301
                 uicc: 3363248917030006820
         primary-band: B3@20Mhz earfcn: 1850 phy-cellid: 229
              ca-band: B20@10Mhz earfcn: 6400 phy-cellid: 6
                 rssi: -60dBm
                 rsrp: -89dBm
                 rsrq: -7dB
                 sinr: 21dB

/interface lte at-chat lte1 input="at+cpin\?"
  output: +CPIN: READY

This is the only problem I could find after a lot of googling - but to be honest I don't know it's implications, and how and why this error would occur. Maybe it is a non relevant error.
/interface lte at-chat lte1 input="AT*Cell=0"
  output: +CME ERROR: phone failure

This log command below delivered the log file attached.
/system logging add topics=lte,!raw
/log print file="logs.txt"
Thank you very much for you input!
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lami16
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Topic Author
Posts: 3
Joined: Fri May 07, 2021 3:08 pm

Re: LTE connection is dead on wAP ac LET6 kit

Thu Sep 29, 2022 12:46 am

I asked the vendor, and he said, that either the LTE card is dead, or part of the baseboard.

It there a way to find this out?

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