I am trying to update the firmware on my SLZB-07MG24 from 7.3.0 to 7.4.5. I experience the same issue regardless of whether I update through this program or through the official web flasher - https://smlight.tech/flasher/#SLZB-07mg24.
The flash reaches 100% and but never actually updates the firmware. Subsequent probes still show that I'm running on 7.3.0.0:
universal-silabs-flasher --device /dev/cu.SLAB_USBtoUART --bootloader-reset rts_dtr flash --firmware ~/ncp-uart-hw-v7.4.5.0-slzb-07mg24-115200.gbl
2025-07-12 23:19:36.455 laptop universal_silabs_flasher.flash INFO Extracted GBL metadata: NabuCasaMetadata(metadata_version=1, sdk_version='4.4.5', ezsp_version='7.4.5.0', ot_rcp_version=None, cpc_version=None, fw_type=<FirmwareImageType.ZIGBEE_NCP: 'zigbee_ncp'>, fw_variant=None, baudrate=115200)
2025-07-12 23:19:36.456 laptop universal_silabs_flasher.flasher INFO Triggering rts_dtr bootloader
2025-07-12 23:19:37.216 laptop universal_silabs_flasher.flasher INFO Probing ApplicationType.GECKO_BOOTLOADER at 115200 baud
2025-07-12 23:19:39.363 laptop universal_silabs_flasher.flasher INFO Probing ApplicationType.EZSP at 115200 baud
2025-07-12 23:19:40.690 laptop universal_silabs_flasher.flasher INFO Detected ApplicationType.EZSP, version '7.3.0.0 build 131' (7.3.0.0.131) at 115200 baudrate (bootloader baudrate None)
2025-07-12 23:19:46.987 laptop universal_silabs_flasher.flasher INFO Triggering rts_dtr bootloader
2025-07-12 23:19:47.751 laptop universal_silabs_flasher.flasher INFO Probing ApplicationType.GECKO_BOOTLOADER at 115200 baud
2025-07-12 23:19:47.907 laptop universal_silabs_flasher.flasher INFO Detected bootloader version '2.3.1'
2025-07-12 23:19:47.907 laptop universal_silabs_flasher.flasher INFO Detected ApplicationType.GECKO_BOOTLOADER, version '2.3.1' at 115200 baudrate (bootloader baudrate 115200)
ncp-uart-hw-v7.4.5.0-slzb-07mg24-115200.gbl [------------------------------------] 0%
...
ncp-uart-hw-v7.4.5.0-slzb-07mg24-115200.gbl [####################################] 100%
universal-silabs-flasher --device /dev/cu.SLAB_USBtoUART probe
2025-07-12 23:21:16.332 laptop universal_silabs_flasher.flasher INFO Probing ApplicationType.GECKO_BOOTLOADER at 115200 baud
2025-07-12 23:21:18.475 laptop universal_silabs_flasher.flasher INFO Probing ApplicationType.CPC at 460800 baud
2025-07-12 23:21:22.985 laptop universal_silabs_flasher.flasher INFO Probing ApplicationType.CPC at 115200 baud
2025-07-12 23:21:27.440 laptop universal_silabs_flasher.flasher INFO Probing ApplicationType.CPC at 230400 baud
2025-07-12 23:21:31.895 laptop universal_silabs_flasher.flasher INFO Probing ApplicationType.EZSP at 115200 baud
2025-07-12 23:21:33.218 laptop universal_silabs_flasher.flasher INFO Detected ApplicationType.EZSP, version '7.3.0.0 build 131' (7.3.0.0.131) at 115200 baudrate (bootloader baudrate None)
2025-07-12 23:21:33.218 laptop universal_silabs_flasher.flash INFO Dumping EmberZNet Config
CONFIG_PACKET_BUFFER_COUNT=255
CONFIG_NEIGHBOR_TABLE_SIZE=26
CONFIG_APS_UNICAST_MESSAGE_COUNT=20
CONFIG_BINDING_TABLE_SIZE=32
CONFIG_ADDRESS_TABLE_SIZE=16
CONFIG_MULTICAST_TABLE_SIZE=16
CONFIG_ROUTE_TABLE_SIZE=16
CONFIG_DISCOVERY_TABLE_SIZE=8
CONFIG_STACK_PROFILE=0
CONFIG_SECURITY_LEVEL=5
CONFIG_MAX_HOPS=30
CONFIG_MAX_END_DEVICE_CHILDREN=32
CONFIG_INDIRECT_TRANSMISSION_TIMEOUT=3000
CONFIG_END_DEVICE_POLL_TIMEOUT=8
CONFIG_TX_POWER_MODE=0
CONFIG_DISABLE_RELAY=0
CONFIG_TRUST_CENTER_ADDRESS_CACHE_SIZE=0
CONFIG_SOURCE_ROUTE_TABLE_SIZE=200
CONFIG_FRAGMENT_WINDOW_SIZE=1
CONFIG_FRAGMENT_DELAY_MS=0
CONFIG_KEY_TABLE_SIZE=12
CONFIG_APS_ACK_TIMEOUT=1600
CONFIG_ACTIVE_SCAN_DURATION=3
CONFIG_END_DEVICE_BIND_TIMEOUT=60
CONFIG_PAN_ID_CONFLICT_REPORT_THRESHOLD=2
CONFIG_REQUEST_KEY_TIMEOUT=0
CONFIG_APPLICATION_ZDO_FLAGS=0
CONFIG_BROADCAST_TABLE_SIZE=15
CONFIG_MAC_FILTER_TABLE_SIZE=15
CONFIG_SUPPORTED_NETWORKS=1
CONFIG_SEND_MULTICASTS_TO_SLEEPY_ADDRESS=0
CONFIG_ZLL_GROUP_ADDRESSES=0
CONFIG_ZLL_RSSI_THRESHOLD=216
CONFIG_MTORR_FLOW_CONTROL=1
CONFIG_RETRY_QUEUE_SIZE=16
CONFIG_NEW_BROADCAST_ENTRY_THRESHOLD=9
CONFIG_TRANSIENT_KEY_TIMEOUT_S=300
CONFIG_BROADCAST_MIN_ACKS_NEEDED=255
CONFIG_TC_REJOINS_USING_WELL_KNOWN_KEY_TIMEOUT_S=300
CONFIG_CTUNE_VALUE=140
CONFIG_ASSUME_TC_CONCENTRATOR_TYPE=1
CONFIG_GP_PROXY_TABLE_SIZE=5
EZSP_CONFIG_GP_SINK_TABLE_SIZE=0
I have tried this from MacOS with the updated CP210x Macintosh OS VCP Driver v6. I have also tried this from a Debian box. I do not have a Windows machine to test with that.
Any advice on steps to move forward would be greatly appreciated.
I am trying to update the firmware on my SLZB-07MG24 from 7.3.0 to 7.4.5. I experience the same issue regardless of whether I update through this program or through the official web flasher - https://smlight.tech/flasher/#SLZB-07mg24.
The flash reaches 100% and but never actually updates the firmware. Subsequent probes still show that I'm running on 7.3.0.0:
I have tried this from MacOS with the updated CP210x Macintosh OS VCP Driver v6. I have also tried this from a Debian box. I do not have a Windows machine to test with that.
Any advice on steps to move forward would be greatly appreciated.