BLE Mesh down after few weekshttps://devzone.nordicsemi.com/f/nordic-q-a/65910/ble-mesh-down-after-few-weeksHello, I&#39;m experiencing a disconnection problem on several BLE Mesh networks. My topology is 1 client with an average of 60 servers, for all networks. Client is connected to a host via serial interface model and it&#39;s also the network provisioner. Devicesen-USTelligent Community 13Tue, 29 Sep 2020 12:27:13 GMTRE: BLE Mesh down after few weekshttps://devzone.nordicsemi.com/thread/272058?ContentTypeID=1Tue, 29 Sep 2020 12:27:13 GMT137ad170-7792-4731-bb38-c0d22fbe4515:7347b937-8e7b-4b6c-8b5b-a01926e494f4Mttrinh<p>Hi,</p> <p>Response from the team:</p> <p>He is using quite an old version of the SDK. Please ask him to take a look at our release notes. We have fixed some issue with respect to IV update procedure in SDK release v4.0.0. Prior to this, restarting a node in between will reset IV update counter. This will cause the node to lag behind in IV update procedure and eventually fall out of the network.&nbsp; I suspect this is the issue here. I don&#39;t think the issue is occurring due to replay cache.&nbsp;</p> <p>It is strongly advised to update to the latest version of the SDK.</p><div style="clear:both;"></div>RE: BLE Mesh down after few weekshttps://devzone.nordicsemi.com/thread/271726?ContentTypeID=1Mon, 28 Sep 2020 10:23:34 GMT137ad170-7792-4731-bb38-c0d22fbe4515:a857a887-3b30-4156-94a2-086da9af8499Mttrinh<p>Hi,</p> <p>Sorry for the late reply.&nbsp;</p> <p>I have forwarded this to our team to take a look at. I will update you when I have an repsonse from them.</p><div style="clear:both;"></div>