# Change IEEE address on SMHUB radio ## EFR32 IEEE Address change **Minimum firmware requirements for this change**: - smhub-os: 0.3.11 (prod) or 0.9.3 (dev) - smhub-services: 0.2.8-1 - smhub-web: 0.2.24-1 1. **Stop all applications using the EFR32 SoC**, including internal apps on SMHUB (e.g. Zigbee2MQTT) or any external applications if the EFR32 is used remotely (for example, Zigbee2MQTT running on another server). 2. Open **SMHUB-OS Console** (main Menu, tab Console). 3. Run the command below (replace the IEEE address `00124b1209d43d4f` if needed): **SMHUB Nano Mg24**: `universal-silabs-flasher --device /dev/ttyS1 write-ieee --ieee 00124b1209d43d4f` **SMHUB Essential/Premium**: `universal-silabs-flasher --device /dev/ttyS2 write-ieee --ieee 00124b1209d43d4f` 4. Wait until the EFR32 SoC is detected and the IEEE address is written. 5. Confirm the operation by checking the output. ```bash INFO Probing ApplicationType.EZSP at 115200 baud INFO Detected ApplicationType.EZSP, version: 8.0.2.0 INFO Current device IEEE: ec:f6:4c:ae:fe:21:ae:12 INFO Wrote new device IEEE: 00:12:4b:12:09:d4:3d:4f ``` [![image_2026-02-03_16-12-57.png](https://smlight.tech/support/manuals/uploads/images/gallery/2026-02/scaled-1680-/image-2026-02-03-16-12-57.png)](https://smlight.tech/support/manuals/uploads/images/gallery/2026-02/image-2026-02-03-16-12-57.png) 6. Should work without a restart, but if not, please reboot with a power cycle (e.g., power off from the power and then power it on). ## CC26xx IEEE Address change **Minimum firmware requirements for this change**: - smhub-os: 0.3.11 (prod) or 0.9.3 (dev) - smhub-services: 0.2.9-1 - smhub-web: 0.2.24-1 1. **Stop all applications using the CC26xx chip**, including internal apps on SMHUB (e.g. Zigbee2MQTT) or any external applications if the CC26xx is used remotely. 2. Open **SMHUB-OS Console** (main Menu, tab Console). 3. Choose the required operation and run **one** of the commands below depending on the variant you have:

SMHUB Essential, SMHUB NanoP7 (CC2652X SoC)	SMHUB Premium (CC2674X SoC)
Set IEEE only (works only if custom IEEE is blank, e.g. custom IEEE never set before): `smlight_cc_flasher -d /dev/ttyS1 -i 00:12:4b:00:30:12:16:53` Set IEEE and flash firmware (can change IEEE even if already set): `smlight_cc_flasher -ewv -d /dev/ttyS1 -i 00:12:4b:00:23:bf:32:48:5d znp.hex` where `znp.hex` is a CC firmware file.	Set IEEE only (works only if custom IEEE is blank, e.g. custom IEEE never set before): `smlight_cc_flasher -m33 -d /dev/ttyS1 -i 00:12:4b:00:30:12:16:53` Set IEEE and flash firmware (can change IEEE even if already set): `smlight_cc_flasher -ewv -m33 -d /dev/ttyS1 -i 00:12:4b:00:23:bf:32:48:5d znp.hex` where `znp.hex` is a CC firmware file.

4. Wait until flashing completes and verify that the operation finished without errors. 5. If required by your SMHUB-OS version, add the correct bootloader reset option: - **SMHUB-OS 0.9.x** - **SMHUB-OS 0.3.x** The IEEE address is stored permanently on the CC26xx chip. Always ensure the IEEE address is **unique** within your Zigbee network.

SMHUB Essential, SMHUB NanoP7 (CC2652X SoC)	SMHUB Premium (CC2674X SoC)
Set IEEE only (works only if custom IEEE is blank, e.g. custom IEEE never set before): `smlight_cc_flasher -d /dev/ttyS1 -i 00:12:4b:00:30:12:16:53` Set IEEE and flash firmware (can change IEEE even if already set): `smlight_cc_flasher -ewv -d /dev/ttyS1 -i 00:12:4b:00:23:bf:32:48:5d znp.hex` where `znp.hex` is a CC firmware file.	Set IEEE only (works only if custom IEEE is blank, e.g. custom IEEE never set before): `smlight_cc_flasher -m33 -d /dev/ttyS1 -i 00:12:4b:00:30:12:16:53` Set IEEE and flash firmware (can change IEEE even if already set): `smlight_cc_flasher -ewv -m33 -d /dev/ttyS1 -i 00:12:4b:00:23:bf:32:48:5d znp.hex` where `znp.hex` is a CC firmware file.