J’ai essayé plusieurs commandes mais sans succès :

Sur les ports USB

# lsusb 
Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 002 Device 003: ID 10c4:ea60 Silicon Labs CP210x UART Bridge
Bus 002 Device 002: ID 10c4:ea60 Silicon Labs CP210x UART Bridge
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 0627:0001 Adomax Technology Co., Ltd QEMU USB Tablet
Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

Chargement du fichier :

# curl -O https://github.com/darkxst/silabs-firmware-builder/raw/refs/heads/4.4.4/firmware_builds/zbdonglee/ncp-uart-hw-v7.4.4.0-zbdonglee-115200.gbl

# universal-silabs-flasher --device /dev/ttyUSB1 --ezsp-baudrate 230400 flash --firmware ncp-uart-hw-v7.4.4.0-zbdonglee-115200.gbl  --allow-cross-flashing
2024-11-22 15:20:54.885 home-assistant universal_silabs_flasher.flash INFO Extracted GBL metadata: NabuCasaMetadata(metadata_version=1, sdk_version='4.4.4', ezsp_version='7.4.4.0', ot_rcp_version=None, cpc_version=None, fw_type=<FirmwareImageType.ZIGBEE_NCP: 'zigbee_ncp'>, fw_variant=None, baudrate=115200)
2024-11-22 15:20:54.886 home-assistant universal_silabs_flasher.flasher INFO Probing ApplicationType.GECKO_BOOTLOADER at 115200 baud
2024-11-22 15:20:56.904 home-assistant universal_silabs_flasher.flasher INFO Probing ApplicationType.EZSP at 230400 baud
2024-11-22 15:21:01.928 home-assistant universal_silabs_flasher.flasher INFO Probing ApplicationType.CPC at 460800 baud
2024-11-22 15:21:06.253 home-assistant universal_silabs_flasher.flasher INFO Probing ApplicationType.CPC at 115200 baud
2024-11-22 15:21:10.575 home-assistant universal_silabs_flasher.flasher INFO Probing ApplicationType.CPC at 230400 baud
2024-11-22 15:21:14.893 home-assistant universal_silabs_flasher.flasher INFO Probing ApplicationType.SPINEL at 460800 baud
Error: Failed to probe running application type
# universal-silabs-flasher --device /dev/ttyUSB1 --ezsp-baudrate 230400 flash --firmware ncp-uart-hw-v7.4.4.0-zbdonglee-115200.gbl 
2024-11-22 15:22:12.321 home-assistant universal_silabs_flasher.flash INFO Extracted GBL metadata: NabuCasaMetadata(metadata_version=1, sdk_version='4.4.4', ezsp_version='7.4.4.0', ot_rcp_version=None, cpc_version=None, fw_type=<FirmwareImageType.ZIGBEE_NCP: 'zigbee_ncp'>, fw_variant=None, baudrate=115200)
2024-11-22 15:22:12.321 home-assistant universal_silabs_flasher.flasher INFO Probing ApplicationType.GECKO_BOOTLOADER at 115200 baud
2024-11-22 15:22:14.337 home-assistant universal_silabs_flasher.flasher INFO Probing ApplicationType.EZSP at 230400 baud
2024-11-22 15:22:19.361 home-assistant universal_silabs_flasher.flasher INFO Probing ApplicationType.CPC at 460800 baud
2024-11-22 15:22:23.688 home-assistant universal_silabs_flasher.flasher INFO Probing ApplicationType.CPC at 115200 baud
2024-11-22 15:22:28.015 home-assistant universal_silabs_flasher.flasher INFO Probing ApplicationType.CPC at 230400 baud
2024-11-22 15:22:32.341 home-assistant universal_silabs_flasher.flasher INFO Probing ApplicationType.SPINEL at 460800 baud
Error: Failed to probe running application type
# universal-silabs-flasher --device /dev/ttyUSB1 --ezsp-baudrate 115200 flash --firmware ncp-uart-hw-v7.4.4.0-zbdonglee-115200.gbl 
2024-11-22 15:23:33.846 home-assistant universal_silabs_flasher.flash INFO Extracted GBL metadata: NabuCasaMetadata(metadata_version=1, sdk_version='4.4.4', ezsp_version='7.4.4.0', ot_rcp_version=None, cpc_version=None, fw_type=<FirmwareImageType.ZIGBEE_NCP: 'zigbee_ncp'>, fw_variant=None, baudrate=115200)
2024-11-22 15:23:33.847 home-assistant universal_silabs_flasher.flasher INFO Probing ApplicationType.GECKO_BOOTLOADER at 115200 baud
2024-11-22 15:23:35.864 home-assistant universal_silabs_flasher.flasher INFO Probing ApplicationType.EZSP at 115200 baud
2024-11-22 15:23:40.887 home-assistant universal_silabs_flasher.flasher INFO Probing ApplicationType.CPC at 460800 baud
2024-11-22 15:23:45.211 home-assistant universal_silabs_flasher.flasher INFO Probing ApplicationType.CPC at 115200 baud
2024-11-22 15:23:49.535 home-assistant universal_silabs_flasher.flasher INFO Probing ApplicationType.CPC at 230400 baud
2024-11-22 15:23:53.861 home-assistant universal_silabs_flasher.flasher INFO Probing ApplicationType.SPINEL at 460800 baud
Error: Failed to probe running application type
# universal-silabs-flasher --device /dev/ttyUSB1 --bootloader-reset sonoff flash --firmware ncp-uart-hw-v7.4.4.0-zbdonglee-115200.gbl 
2024-11-22 15:24:42.233 home-assistant universal_silabs_flasher.flash INFO Extracted GBL metadata: NabuCasaMetadata(metadata_version=1, sdk_version='4.4.4', ezsp_version='7.4.4.0', ot_rcp_version=None, cpc_version=None, fw_type=<FirmwareImageType.ZIGBEE_NCP: 'zigbee_ncp'>, fw_variant=None, baudrate=115200)
2024-11-22 15:24:42.233 home-assistant universal_silabs_flasher.flasher INFO Triggering sonoff bootloader
2024-11-22 15:24:42.852 home-assistant universal_silabs_flasher.flasher INFO Probing ApplicationType.GECKO_BOOTLOADER at 115200 baud
2024-11-22 15:24:44.871 home-assistant universal_silabs_flasher.flasher INFO Probing ApplicationType.EZSP at 115200 baud
2024-11-22 15:24:49.895 home-assistant universal_silabs_flasher.flasher INFO Probing ApplicationType.CPC at 460800 baud
2024-11-22 15:24:54.225 home-assistant universal_silabs_flasher.flasher INFO Probing ApplicationType.CPC at 115200 baud
2024-11-22 15:24:58.557 home-assistant universal_silabs_flasher.flasher INFO Probing ApplicationType.CPC at 230400 baud
2024-11-22 15:25:02.886 home-assistant universal_silabs_flasher.flasher INFO Probing ApplicationType.SPINEL at 460800 baud
Error: Failed to probe running application type

Misère.