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sgale
sgale
New Member
August 28, 2025
Question

FGR-70F-3G4G WWAN interface drops when pushing firmware from Fortimanager

  • August 28, 2025
  • 4 replies
  • 682 views

We are encountering an issue with upgrading our firewalls over cellular. 

During the firmware update the firewalls wwan connection drops and the firmware push fails. (hangs at 36%)

Could this be related to the Modem firmware or is there a setting that needs to be updated to prevent this from happening?

Are there any diagnostics to troubleshoot this issue?

 

FGR-70F-3G4G 7.2.6b1575 -->7.4.7b2731

LTE Modem EM7565 Firmware SWI9X50C_01.08.04.00 (Generic)

Fortimanager 7.6.4 b3579

4 replies

Anthony_E
Staff
Anthony_E
Staff
September 1, 2025

Hello,


Thank you for using the Community Forum. I will seek to get you an answer or help. We will reply to this thread with an update as soon as possible.


Thanks,

Anthony

Best Regards
Anthony_E
Staff
Anthony_E
Staff
September 4, 2025

Hello,

We are still looking for someone to help you.

We will come back to you ASAP.


Thanks,

Best Regards
    Anthony_E
    Staff
    Anthony_E
    Staff
    September 8, 2025

    Hello,

     

    Did you already open a TAC ticket with the support: https://support.fortinet.com/welcome/#/

     

    Regards,

    Anthony

    Best Regards
    sgale
    sgaleAuthor
    New Member
    September 10, 2025

    We've also found that the LTE modem disconnects when a host PC on the network is downloading patches or when we try to push a fortiswitch upgrade over the cell link. 

    I have an outstanding ticket with TAC as well. 

    sgale
    sgaleAuthor
    New Member
    September 11, 2025

    Update:

    The issue seems to be related to the cellular link being saturated during a firmware push or when a client is downloading a patch. 

    Event Logs show 

    LTE modem IPV4 data link changed from 
    QMI_WDS_CONNECTION_STATUS_CONNECTED to QMI_WDS_CONNECTION_STATUS_DISCONNECTED


    This kills any connections. The cell interface comes back up approximately 5-6 seconds later. 

    Is there some sort of keepalive that could be failing causing the cell modem to reset itself?

     

     

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