# Device OS **URL:** https://community.particle.io/c/firmware/device-os/48.md [Latest](https://community.particle.io/latest.md) · [Categories](https://community.particle.io/categories.md) · [Tags](https://community.particle.io/tags.md) --- ## [About the Device OS category](https://community.particle.io/t/about-the-device-os-category/53712)
**Author:** [@Joe](https://community.particle.io/u/Joe)\ **Replies:** 0
For discussions about Device OS. --- ## [Bluetooth Pairing not completing](https://community.particle.io/t/bluetooth-pairing-not-completing/72346)
**Author:** [@tnilsen](https://community.particle.io/u/tnilsen)\ **Replies:** 11\ **Last updated:** [August 29, 2026, 3:21pm UTC](https://community.particle.io/t/bluetooth-pairing-not-completing/72346 "2026-08-29T15:21:05Z")
I am using an Argon with OS 6.4.1 to connect via Bluetooth to a 3rd party device (Shelly relay). It all works great as long as the Shelly device runs pre-2.0 firmware. Shelly added the requirement for Bluetooth pairing … --- ## [BLE Notify on Photon 2 gets disrupted at 10 notifies](https://community.particle.io/t/ble-notify-on-photon-2-gets-disrupted-at-10-notifies/72390)
**Author:** [@rhertzler](https://community.particle.io/u/rhertzler)\ **Replies:** 5\ **Last updated:** [August 12, 2026, 2:27pm UTC](https://community.particle.io/t/ble-notify-on-photon-2-gets-disrupted-at-10-notifies/72390 "2026-08-12T14:27:10Z")
We have prototypes running on multiple platforms: BSOM, Boron, Argon and Photon 2. They all run pretty much the same code that gathers sensor records, stores them in memory ring buffer, publishes to cloud, and exposes BL… --- ## [M404 Freezing Appears to be WiFi](https://community.particle.io/t/m404-freezing-appears-to-be-wifi/72384)
**Author:** [@reyesel](https://community.particle.io/u/reyesel)\ **Replies:** 2\ **Last updated:** [August 11, 2026, 4:05pm UTC](https://community.particle.io/t/m404-freezing-appears-to-be-wifi/72384 "2026-08-11T16:05:16Z")
I am seeing some of my M404 Devices freeze on me at random intervals. It happens both for system on and off wi.fi. Anyone experience something like this? The freezing isn't consistent but just randomly to where even my c… --- ## [Photon 2 drops cloud connection repeatedly](https://community.particle.io/t/photon-2-drops-cloud-connection-repeatedly/71225)
**Author:** [@rhertzler](https://community.particle.io/u/rhertzler)\ **Replies:** 15\ **Last updated:** [August 8, 2026, 1:34pm UTC](https://community.particle.io/t/photon-2-drops-cloud-connection-repeatedly/71225 "2026-08-08T13:34:50Z")
We have a Photon 2 that repeatedly drops the cloud connection. It is one of 4 devices and the other 3 have not had this problem - on our lab network or other networks. There are other cases of a similar problem in these … --- ## [How i pair my bluetooth](https://community.particle.io/t/how-i-pair-my-bluetooth/72351)
**Author:** [@Bossbro](https://community.particle.io/u/Bossbro)\ **Replies:** 1\ **Last updated:** [August 7, 2026, 12:04pm UTC](https://community.particle.io/t/how-i-pair-my-bluetooth/72351 "2026-08-07T12:04:18Z")
How i pair the bluetooth its not pairing --- ## [Need account upgrade](https://community.particle.io/t/need-account-upgrade/72306)
**Author:** [@pslapshot](https://community.particle.io/u/pslapshot)\ **Replies:** 4\ **Last updated:** [July 29, 2026, 3:59pm UTC](https://community.particle.io/t/need-account-upgrade/72306 "2026-07-29T15:59:23Z")
Having trouble with account upgrade. support not responding Pat --- ## [Particle Tracker One Stuck in Connecting to Cloud](https://community.particle.io/t/particle-tracker-one-stuck-in-connecting-to-cloud/71963)
**Author:** [@themsabs](https://community.particle.io/u/themsabs)\ **Replies:** 4\ **Last updated:** [June 23, 2026, 4:24pm UTC](https://community.particle.io/t/particle-tracker-one-stuck-in-connecting-to-cloud/71963 "2026-06-23T16:24:18Z")
Is there anything more that can be done for a tracker one that cannot connect to the cloud? It is blinking green for over a week. Have tried network and factory reset. --- ## [ApplicationAssets inflator uses Free Mem instead of Largest Free Heap and Hangs](https://community.particle.io/t/applicationassets-inflator-uses-free-mem-instead-of-largest-free-heap-and-hangs/71961)
**Author:** [@johnnyfp](https://community.particle.io/u/johnnyfp)\ **Replies:** 0\ **Last updated:** [June 23, 2026, 1:07pm UTC](https://community.particle.io/t/applicationassets-inflator-uses-free-mem-instead-of-largest-free-heap-and-hangs/71961 "2026-06-23T13:07:55Z")
I'm trying to get a automatic OTA system running where the Particle automatically updates slave devices connected to it by Streaming the Assets that are included with the firmware. However I've run into an issue when my… --- ## [Connect the MUON M404 to Wi-Fi. Reset the Wi-Fi settings and connect the MUON M404 to a different Wi-Fi network](https://community.particle.io/t/connect-the-muon-m404-to-wi-fi-reset-the-wi-fi-settings-and-connect-the-muon-m404-to-a-different-wi-fi-network/71949)
**Author:** [@Nguyenclick](https://community.particle.io/u/Nguyenclick)\ **Replies:** 1\ **Last updated:** [June 22, 2026, 9:11am UTC](https://community.particle.io/t/connect-the-muon-m404-to-wi-fi-reset-the-wi-fi-settings-and-connect-the-muon-m404-to-a-different-wi-fi-network/71949 "2026-06-22T09:11:44Z")
Hello Everone. I am using a MUON M404 device. I would like to reset the Wi-Fi settings and connect it to a different Wi-Fi network. How can I do that? --- ## [Examples of using Environment Variables](https://community.particle.io/t/examples-of-using-environment-variables/71923)
**Author:** [@armor](https://community.particle.io/u/armor)\ **Replies:** 2\ **Last updated:** [June 15, 2026, 4:04pm UTC](https://community.particle.io/t/examples-of-using-environment-variables/71923 "2026-06-15T16:04:41Z")
I can see the Device OS API for this feature but there aren't any examples. Can I check System.getEnv() each loop or should this be on a less frequent basis. --- ## [BRN402 and TAN004](https://community.particle.io/t/brn402-and-tan004/71406)
**Author:** [@JochiPochi](https://community.particle.io/u/JochiPochi)\ **Replies:** 3\ **Last updated:** [May 29, 2026, 1:45pm UTC](https://community.particle.io/t/brn402-and-tan004/71406 "2026-05-29T13:45:34Z")
Welp, this is a long shot but I wonder if anyone has ever managed to get out of this one. I have an old Boron (BRN402) that I tried playing arround with today. And I'm pretty sure I have a TAN004 situation. Below are th… --- ## [Time.now() returning date in the future](https://community.particle.io/t/time-now-returning-date-in-the-future/71298)
**Author:** [@coala](https://community.particle.io/u/coala)\ **Replies:** 6\ **Last updated:** [April 29, 2026, 9:16pm UTC](https://community.particle.io/t/time-now-returning-date-in-the-future/71298 "2026-04-29T21:16:49Z")
After a recent OTA firmware update, some devices are reporting Time.now() values a couple minutes in the future from when they were received which we've never noticed before. This device tells us that it published this e… --- ## [Custom DFU processes from user application including Assets - BLE idea](https://community.particle.io/t/custom-dfu-processes-from-user-application-including-assets-ble-idea/71232)
**Author:** [@jaza\_tom](https://community.particle.io/u/jaza_tom)\ **Replies:** 2\ **Last updated:** [April 10, 2026, 5:03pm UTC](https://community.particle.io/t/custom-dfu-processes-from-user-application-including-assets-ble-idea/71232 "2026-04-10T17:03:01Z")
There are several locations where we have Borons and Muon devices installed that are unable to connect to the local cellular network. We have tried antenna repositioning, etc but we consistently have about 10% of our fle… --- ## [P2 Module Stuck in DFU Mode](https://community.particle.io/t/p2-module-stuck-in-dfu-mode/71159)
**Author:** [@willdueease](https://community.particle.io/u/willdueease)\ **Replies:** 3\ **Last updated:** [March 18, 2026, 5:13pm UTC](https://community.particle.io/t/p2-module-stuck-in-dfu-mode/71159 "2026-03-18T17:13:25Z")
Hello! I have a P2 module on our PCB that is stuck in DFU mode. I found a number of threads mentioning this and tried the following: particle update it successfully flashes p2-system-part1@6.2.5 but hangs at “switchin… --- ## [Question about using Variant to publish data](https://community.particle.io/t/question-about-using-variant-to-publish-data/71056)
**Author:** [@PaulAugood](https://community.particle.io/u/PaulAugood)\ **Replies:** 3\ **Last updated:** [February 22, 2026, 10:46am UTC](https://community.particle.io/t/question-about-using-variant-to-publish-data/71056 "2026-02-22T10:46:05Z")
Hi, I’m not sure if this is the right category so please correct me if wrong I was following the tutorial for DataCake and found it used Variant class - this looks like it is a great way to package data for publishing.… --- ## [UDP receivePacket() appears to be throttled to 1/second](https://community.particle.io/t/udp-receivepacket-appears-to-be-throttled-to-1-second/70999)
**Author:** [@jpeytonj](https://community.particle.io/u/jpeytonj)\ **Replies:** 2\ **Last updated:** [February 11, 2026, 10:19am UTC](https://community.particle.io/t/udp-receivepacket-appears-to-be-throttled-to-1-second/70999 "2026-02-11T10:19:43Z")
Hello there, First a bit of context: I am trying to port a lightweight version of a Lab Streaming Layer (LSL docs) outlet to run on an Argon. For time synchronization, the LSL protocol sends a rapid stream of 8 short pa… --- ## [Tracker SoM panic 13 stack overflow in Device OS: PC hits FirmwareUpdate::process()](https://community.particle.io/t/tracker-som-panic-13-stack-overflow-in-device-os-pc-hits-firmwareupdate-process/70939)
**Author:** [@PkStrSk](https://community.particle.io/u/PkStrSk)\ **Replies:** 2\ **Last updated:** [February 9, 2026, 10:10pm UTC](https://community.particle.io/t/tracker-som-panic-13-stack-overflow-in-device-os-pc-hits-firmwareupdate-process/70939 "2026-02-09T22:10:45Z")
Hello all, I’m debugging repeated panic code 13 (stack overflow) on a Tracker SoM (T524), Device OS 6.3.3. I added custom PANIC\_INFO publishing and every crash reports the same addresses: {"code":13,"pc":"0x0004b05c",… --- ## [TCPClient random disconnect](https://community.particle.io/t/tcpclient-random-disconnect/70960)
**Author:** [@italex](https://community.particle.io/u/italex)\ **Replies:** 3\ **Last updated:** [January 30, 2026, 5:06pm UTC](https://community.particle.io/t/tcpclient-random-disconnect/70960 "2026-01-30T17:06:16Z")
Hi folks, Does anybody know how to solve a TCPClient random disconnect? I'm running a personal weather station and uploading data to Weather Underground (WU) using a Photon 2. The Photon never drops the Wi-Fi connectio… --- ## [Help with keeping Boron asleep until it receives a suscribed event](https://community.particle.io/t/help-with-keeping-boron-asleep-until-it-receives-a-suscribed-event/70888)
**Author:** [@cave\_river](https://community.particle.io/u/cave_river)\ **Replies:** 1\ **Last updated:** [January 4, 2026, 11:22am UTC](https://community.particle.io/t/help-with-keeping-boron-asleep-until-it-receives-a-suscribed-event/70888 "2026-01-04T11:22:27Z")
I have a Boron which I’d like to keep asleep to save power and only wake when it receives an event on a subscribed topic over cellular, then show information on an e-ink display. This will be a solar + battery setup. Fr… --- ## [Behaviour when Device has no cell signal](https://community.particle.io/t/behaviour-when-device-has-no-cell-signal/70783)
**Author:** [@StngBo](https://community.particle.io/u/StngBo)\ **Replies:** 2\ **Last updated:** [November 27, 2025, 3:53pm UTC](https://community.particle.io/t/behaviour-when-device-has-no-cell-signal/70783 "2025-11-27T15:53:24Z")
For a Gen 3 device in Automatic mode with System Thread enabled. What happens if the device is our of cell service for extended periods of time, weeks and months. Will the device continue to run the firmware correctly. I… --- ## [DHT22Gen3\_RK error](https://community.particle.io/t/dht22gen3-rk-error/70703)
**Author:** [@grantselectron](https://community.particle.io/u/grantselectron)\ **Replies:** 3\ **Last updated:** [November 3, 2025, 3:39pm UTC](https://community.particle.io/t/dht22gen3-rk-error/70703 "2025-11-03T15:39:18Z")
I’m trying to flash code that has worked many times before to an Argon. I haven’t flashed this code in 6 months, but now I get a series of related errors starting with: lib/DHT22Gen3\_RK/DHT22Gen3\_RK.cpp:35:0: undefined… --- ## [Serial RX bytes dropped on Muon and Photon2 or any RTL872x device](https://community.particle.io/t/serial-rx-bytes-dropped-on-muon-and-photon2-or-any-rtl872x-device/70659)
**Author:** [@jaza\_tom](https://community.particle.io/u/jaza_tom)\ **Replies:** 4\ **Last updated:** [October 24, 2025, 5:31pm UTC](https://community.particle.io/t/serial-rx-bytes-dropped-on-muon-and-photon2-or-any-rtl872x-device/70659 "2025-10-24T17:31:12Z")
Looping back to a topic that got automatically closed on me: At the time, it was thought that Device OS 6.3.1 would improve things, however that is not the case. We are still seeing bytes routinely being “discarded”… --- ## [Bricked my Electron?](https://community.particle.io/t/bricked-my-electron/70614)
**Author:** [@vsthose](https://community.particle.io/u/vsthose)\ **Replies:** 6\ **Last updated:** [October 15, 2025, 11:19pm UTC](https://community.particle.io/t/bricked-my-electron/70614 "2025-10-15T23:19:28Z")
I have a device in the field we were attempting to update to start sending a CBOR array of data, collected every 15 seconds and delivered every 3 minute. We had 55 total firmware updates and only minor changes from one … --- ## [What is the memory map for the M-SoM (Muon)?](https://community.particle.io/t/what-is-the-memory-map-for-the-m-som-muon/70615)
**Author:** [@jaza\_tom](https://community.particle.io/u/jaza_tom)\ **Replies:** 1\ **Last updated:** [October 15, 2025, 7:46pm UTC](https://community.particle.io/t/what-is-the-memory-map-for-the-m-som-muon/70615 "2025-10-15T19:46:43Z")
In my application, I do the following on startup: calculate CRC32 of the present region of user application flash compare to retained (eeprom) CRC from previous runtime if there is a difference, activate the “DFU boot”… --- ## [Photon 2 Repeated SOS On Setting Up Wifi](https://community.particle.io/t/photon-2-repeated-sos-on-setting-up-wifi/70480)
**Author:** [@rob7](https://community.particle.io/u/rob7)\ **Replies:** 7\ **Last updated:** [October 8, 2025, 11:07pm UTC](https://community.particle.io/t/photon-2-repeated-sos-on-setting-up-wifi/70480 "2025-10-08T23:07:01Z")
Many of my students are running into continual issues connecting their Photon 2s our school Wifi network. When some students connect to our school’s wifi network, the status LED will flash green for ~20 seconds before we… --- ## [When will v6.3.4 be avalible on vscode extension?](https://community.particle.io/t/when-will-v6-3-4-be-avalible-on-vscode-extension/70556)
**Author:** [@gpatt1](https://community.particle.io/u/gpatt1)\ **Replies:** 4\ **Last updated:** [October 6, 2025, 7:22pm UTC](https://community.particle.io/t/when-will-v6-3-4-be-avalible-on-vscode-extension/70556 "2025-10-06T19:22:42Z")
When will v6.3.4 be avalible on vscode extension? --- ## [Debugging hard faults - accessing hard fault contextual information](https://community.particle.io/t/debugging-hard-faults-accessing-hard-fault-contextual-information/70538)
**Author:** [@jaza\_tom](https://community.particle.io/u/jaza_tom)\ **Replies:** 6\ **Last updated:** [October 3, 2025, 10:22am UTC](https://community.particle.io/t/debugging-hard-faults-accessing-hard-fault-contextual-information/70538 "2025-10-03T10:22:49Z")
Hello all. I am trying to debug a hard fault that I am getting on my Boron application. I have isolated the fault to a certain call from within my main loop through the use of the retained SRAM feature and by creating … --- ## [RGB LED behaviour after hibernation and restart](https://community.particle.io/t/rgb-led-behaviour-after-hibernation-and-restart/70493)
**Author:** [@armor](https://community.particle.io/u/armor)\ **Replies:** 2\ **Last updated:** [September 22, 2025, 5:12pm UTC](https://community.particle.io/t/rgb-led-behaviour-after-hibernation-and-restart/70493 "2025-09-22T17:12:59Z")
Have noticed an unwelcome behaviour with P2 on Device OS 6.3.3. If the WiFi credentials are deleted the RGB LED starts to breathe dark blue. If the device is put into Hibernation sleep and then woken on WKP pin, the P2… --- ## [Activating cloud functions before setup() finishes](https://community.particle.io/t/activating-cloud-functions-before-setup-finishes/70487)
**Author:** [@gusgonnet](https://community.particle.io/u/gusgonnet)\ **Replies:** 1\ **Last updated:** [September 19, 2025, 7:53pm UTC](https://community.particle.io/t/activating-cloud-functions-before-setup-finishes/70487 "2025-09-19T19:53:52Z")
Hi, I read this on the docs: When using the default AUTOMATIC system mode, the cloud functions must be registered in the setup() function. The information about registered functions will be sent to the cloud when the … [Next page](https://community.particle.io/c/firmware/device-os/48.md?page=1)