Cellular GNSS clarifications

particle-iot · rickkas7 · Jun 25, 2025 · Jun 25, 2025 · Jun 25, 2025 · 628de11febe55db4d9b8ad71d47559d7ce481b2c
commit 628de11febe55db4d9b8ad71d47559d7ce481b2c
diff --git a/config/sharedBlurbs.json b/config/sharedBlurbs.json
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diff --git a/config/sitemap.json b/config/sitemap.json
@@ -8223,8 +8223,8 @@
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@@ -8391,12 +8391,12 @@
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@@ -9083,8 +9083,8 @@
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+            "date": "2025-06-25"
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@@ -9459,8 +9459,8 @@
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+            "hash": "03aad32d87638b5bd08e4c5286eab6f6d7ef5b922fd7be76f10dd9ed29e8ed81",
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@@ -9707,8 +9707,8 @@
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+            "date": "2025-06-25"
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diff --git a/scripts/pdf-generation/hashes.json b/scripts/pdf-generation/hashes.json
@@ -15,7 +15,7 @@
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   "b-series/b404x-certification.md": "3547986a6b3996595ee186f5a39057fa",
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-  "b-series/b504-datasheet.md": "1da8708b6eca525ad529db2fb3678aef",
+  "b-series/b504-datasheet.md": "4467bec8b56b3e3770cba12e7d178320",
   "b-series/b524-b523-datasheet.md": "c30ce153457912074bbc5aeb5b0175ba",
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@@ -48,10 +48,10 @@
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   "m-series/m2-breakout-datasheet.md": "869d129cec61da6fc2dff5727fd48df4",
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diff --git a/src/assets/pdfs/datasheets/b504-datasheet.pdf b/src/assets/pdfs/datasheets/b504-datasheet.pdf
diff --git a/src/assets/pdfs/datasheets/m1-enclosure-datasheet.pdf b/src/assets/pdfs/datasheets/m1-enclosure-datasheet.pdf
diff --git a/src/assets/pdfs/datasheets/msom-datasheet.pdf b/src/assets/pdfs/datasheets/msom-datasheet.pdf
diff --git a/src/assets/pdfs/datasheets/muon-datasheet.pdf b/src/assets/pdfs/datasheets/muon-datasheet.pdf
diff --git a/src/content/getting-started/new.md b/src/content/getting-started/new.md
@@ -21,6 +21,10 @@ When adding new items to this page:
 The header format must be exactly that because the search feature uses that to delimit entries, and determine the date of entries
 --}}
 
+### Cellular GNSS updates 2025-06-25
+
+Clarifications in datasheets and migration guides for devices with GNSS in the cellular modem (M404, M524, B504).
+
 ### Secrets API update 2025-06-24
 
 Minor updates for [cloud secrets](/getting-started/cloud/secrets/) cloud API.

diff --git a/src/content/hardware/migration-guides/b404-b504-migration-guide.md b/src/content/hardware/migration-guides/b404-b504-migration-guide.md
@@ -120,9 +120,10 @@ The B504 (and B524) include optional GNSS (GPS) functionality. This requires an
 
 Single quantity B-SoM units and developer kits include a PARANTGN1EA antenna. Tray quantities of the B-SoM do not include antennas. If not using the GNSS feature, the antenna can be omitted from your design.
 
-- GNSS support requires a [firmware library](https://github.com/particle-iot/particle-som-gnss).
-- Feature such of high-precision, dead-reckoning, and high updates rates will require an external GNSS chip.
-- You can omit the antenna if you do not wish to use GNSS.
+{{!-- BEGIN shared-blurb a33dc9e7-17a7-4a03-87d6-88b8a534600f --}}
+- GNSS support requires a [firmware library](https://github.com/particle-iot/particle-som-gnss). This library is not currently compatible with the B504 (EG91 cellular modem), but support is planned for the future.
+- Features such of high-precision, dead-reckoning, and high updates rates will require an external GNSS chip.
+{{!-- END shared-blurb --}}
 
 ### Size
 

diff --git a/src/content/reference/datasheets/b-series/b504-datasheet.md b/src/content/reference/datasheets/b-series/b504-datasheet.md
@@ -293,8 +293,10 @@ Environmental:
 
 Single quantity B-SoM units and developer kits include a PARANTGN1EA antenna. Tray quantities of the B-SoM do not include antennas. If not using the GNSS feature, the antenna can be omitted from your design.
 
-- GNSS support requires a [firmware library](https://github.com/particle-iot/particle-som-gnss).
-- Feature such of high-precision, dead-reckoning, and high updates rates will require an external GNSS chip.
+{{!-- BEGIN shared-blurb a33dc9e7-17a7-4a03-87d6-88b8a534600f --}}
+- GNSS support requires a [firmware library](https://github.com/particle-iot/particle-som-gnss). This library is not currently compatible with the B504 (EG91 cellular modem), but support is planned for the future.
+- Features such of high-precision, dead-reckoning, and high updates rates will require an external GNSS chip.
+{{!-- END shared-blurb --}}
 
 
 #### General antenna guidance
@@ -2181,3 +2183,4 @@ The following countries are not officially supported at this time, but may be co
 | 004      | 2024-09-24 | RK | Removed concurrent GNSS warning |
 | 005      | 2025-04-21 | RK | Added ISED certification |
 | 006      | 2025-05-09 | RK | Added Industry Canada statement |
+| 007      | 2025-06-25 | RK | Clarifications for GNSS use |
diff --git a/src/content/reference/datasheets/m-series/m1-enclosure-datasheet.md b/src/content/reference/datasheets/m-series/m1-enclosure-datasheet.md
@@ -160,8 +160,11 @@ The GNSS antenna should be mounted just below the front status LED and connected
 
 Single quantity M-SoM units and developer kits include a PARANTGN1EA antenna. Tray quantities of the M-SoM do not include antennas. If not using the GNSS feature, the antenna can be omitted from your design.
 
-- GNSS support will be added in a future version of Device OS. A [user firmware library](https://github.com/particle-iot/particle-som-gnss) is available now for the M404.
-- Feature such of high-precision, dead-reckoning, and high updates rates will require an external GNSS chip.
+{{!-- BEGIN shared-blurb 7380ecbc-cf8b-4498-926c-f74739cafcb9 --}}
+- A [firmware library](https://github.com/particle-iot/particle-som-gnss) is available now for the M404. A future update will add support for the M524.
+- Features such of high-precision, dead-reckoning, and high updates rates will require an external GNSS chip.
+- On the M404 (BG95 cellular modem), radio hardware is shared between the cellular modem and built-in GNSS which limits concurrent use.
+{{!-- END shared-blurb --}}
 
 
 ### Wi-Fi/BLE antenna - Muon

diff --git a/src/content/reference/datasheets/m-series/msom-datasheet.md b/src/content/reference/datasheets/m-series/msom-datasheet.md
@@ -161,8 +161,11 @@ work with 5 GHz and this will result in poor Wi-Fi performance on the P2, Photon
 
 Single quantity M-SoM units and developer kits include a PARANTGN1EA antenna. Tray quantities of the M-SoM do not include antennas. If not using the GNSS feature, the antenna can be omitted from your design.
 
-- GNSS support will be added in a future version of Device OS. A [user firmware library](https://github.com/particle-iot/particle-som-gnss) is available now for the M404.
-- Feature such of high-precision, dead-reckoning, and high updates rates will require an external GNSS chip.
+{{!-- BEGIN shared-blurb 7380ecbc-cf8b-4498-926c-f74739cafcb9 --}}
+- A [firmware library](https://github.com/particle-iot/particle-som-gnss) is available now for the M404. A future update will add support for the M524.
+- Features such of high-precision, dead-reckoning, and high updates rates will require an external GNSS chip.
+- On the M404 (BG95 cellular modem), radio hardware is shared between the cellular modem and built-in GNSS which limits concurrent use.
+{{!-- END shared-blurb --}}
 
 ### General Antenna Guidance
 
@@ -1495,3 +1498,4 @@ Global, country list to be provided a later date.
 | 012      | 2025-01-06 | RK | Added note explaining reserved SoM pins |
 | 013      | 2025-01-21 | RK | Incorrect RTL pin listed in SETUP and RESET button section. It was listed as PA[4] but is PA[11]. It was correct in the pin diagram. |
 | 014      | 2025-04-10 | RK | Added links to hardware-libraries and M.2 breakout board designs |
+| 015      | 2025-06-25 | RK | Clarifications for GNSS use |
diff --git a/src/content/reference/datasheets/m-series/muon-datasheet.md b/src/content/reference/datasheets/m-series/muon-datasheet.md
@@ -285,8 +285,11 @@ Single quantity M-SoM units and developer kits include a PARANTWM1EA antenna. Tr
 
 Single quantity M-SoM units and developer kits include a PARANTGN1EA antenna. Tray quantities of the M-SoM do not include antennas. If not using the GNSS feature, the antenna can be omitted from your design.
 
-- GNSS support will be added in a future version of Device OS. A [user firmware library](https://github.com/particle-iot/particle-som-gnss) is available now for the M404.
-- Feature such of high-precision, dead-reckoning, and high updates rates will require an external GNSS chip.
+{{!-- BEGIN shared-blurb 7380ecbc-cf8b-4498-926c-f74739cafcb9 --}}
+- A [firmware library](https://github.com/particle-iot/particle-som-gnss) is available now for the M404. A future update will add support for the M524.
+- Features such of high-precision, dead-reckoning, and high updates rates will require an external GNSS chip.
+- On the M404 (BG95 cellular modem), radio hardware is shared between the cellular modem and built-in GNSS which limits concurrent use.
+{{!-- END shared-blurb --}}
 
 ### Certified LoRa antennas
 
@@ -1947,3 +1950,4 @@ Global, country list to be provided a later date.
 |   3      | 2025-01-02 | RK | Wrong pin listed for the power manager interrupt pin; it is A7, not A6 |
 |   4      | 2025-02-11 | RK | Added height and weight |
 |   5      | 2025-06-17 | RK | Added link to 3D models |
+|   6      | 2025-06-25 | RK | Clarifications for GNSS use |