guillaume fernandez 1

• asked Oct 23, 2025

Burst of "None of the device-sessions for dev_addr resulted in valid MIC " failures after a gateway came back online

Context Platform: ChirpStack v4.3.0 (NS + AS), EU868 region Integrations: Redis (sessions + streams), MQTT enabled MQTT replay: max_inflight_messages = 1, qos = 1 on the gateway side + patch gateway/backend/mqtt.rs {code...}

troubleshooting chirpstack

0 votes

3 answers

115 views

Orne Brocaar 886

• asked Oct 23, 2025

ChirpStack Concentratord v4.5.3

v4.5.3 Features Add support for miromico_gwc_02_lw_868 and miromico_gwc_02_lw_915 modules. Improvements Update internal dependencies + tune feature flags.

announcements

0 votes

0 answers

34 views

Erik 1

• asked Oct 23, 2025

Separating sensors by Installation with Service Profile

We are currently using Chirpstack v3 but are soon going to upgrade to Chirpstack v4. Some Gateways should only be allowed to talk to certain sensors and it seems like this is possible by enabling Private Gateways and Configuring the Install...

chirpstack

0 votes

1 answers

48 views

Marco Ratto 1

• asked Oct 22, 2025

Received http2 header with status: 400, grpc_status:13

Hi, I'm running Chirpstack v4.15.0 on Red Hat Openshift. I'm trying to use the API with Python and gRPC but I have the following error: {code...}

troubleshooting api chirpstack

0 votes

1 answers

115 views

Doug Reese 5

• asked Oct 21, 2025

Multiple MQTT brokers and down messages

If using Chirpstack similar to the [Multi-region example 2 in the architecture documentation page] , how does Chirpstack know which broker to use to deliver a downlink message to a device? I have an application that uses the API DeviceServi...

chirpstack

0 votes

2 answers

140 views

Rim 1

• asked Oct 21, 2025

IWM-LR5 Device not sending any info

I have issues with IWM-LR5 device, it is not sending any data. Can somebody help me with it? any hint why it doesn't connect I tried and forced a joint on the device, and it just sends a join-request and a join-accept and no data. I use...

configuration devices gateways chirpstack

0 votes

2 answers

168 views

Maurits Meeusen 1

• asked Oct 21, 2025

FUOTA ENQUEUE does not wait for mc msg's but instantly goes to FRAG_STATUS

Hello, I noticed that when all messages are enqueued, the task is done instantly. Normally this will work for small FUOTA payloads or if the "Expected uplink interval (secs)" X "Unicast retry count (max)" is bigger then the ...

bug chirpstack fuota

0 votes

2 answers

78 views

aloiseau 13

• asked Oct 21, 2025

Replace a queued downlink (and fPort)

I am discovering ChirpStack and LoRaWAN steps by steps and I am discovering downlinks "fPorts" which make me thinking about my previous post [Replace a queued downlink] which aims to request a flush-queue option to enqueue command w...

api chirpstack

0 votes

2 answers

102 views

Orne Brocaar 886

• asked Oct 21, 2025

ChirpStack Gateway OS v4.9.0

v4.9.0 Features Dragino LPS8N This release adds support for the Dragino LPS8N gateway. Updates Update ChirpStack Concentratord to v4.5.2. Update ChirpStack to v4.15.0. Update ChirpStack MQTT Forwarder to v4.4.1. Update ChirpStack Gateway Me...

announcements

0 votes

0 answers

76 views

Orne Brocaar 886

• asked Oct 21, 2025

ChirpStack MQTT Forwarder v4.4.1

v4.4.1 Improvements Update internal dependencies and tune feature flags. Bugfixes Fix keep_alive_interval in config template. Do not encode null values to JSON for Semtech UDP backend.

announcements

0 votes

0 answers

45 views