I am just curious if it works on another sysystem.
Edit: Or you already tried this on Ubuntu? I assumed your system was a RPI.
I see, you wrote it in your first post… well lets see…
So finally updated my Debian system to version 2.13.01-debian-buster-beta. Unfortunately, updating the firmware to build “deCONZ_ConBeeII_0x26720700.bin.GCF” still fails.
root@Qnap-NAS:~# ls
deCONZ_ConBeeII_0x26700700.bin.GCF deCONZ_ConBeeII_0x26720700.bin.GCF
root@Qnap-NAS:~# sudo GCFFlasher_internal -t 60 -d /dev/ttyACM0 -f deCONZ_ConBeeII_0x26720700.bin.GCF
GCFFlasher V3_17 (c) dresden elektronik ingenieurtechnik gmbh
Reboot device /dev/serial/by-id/usb-dresden_elektronik_ingenieurtechnik_GmbH_ConBee_II_DE2190945-if00 (ConBee II)
deCONZ firmware version 266E0700
R21B18 Bootloader
Vers: 2.07
build: Jun 17 2019
could not sync with bootloader
Reboot device /dev/serial/by-id/usb-dresden_elektronik_ingenieurtechnik_GmbH_ConBee_II_DE2190945-if00 (ConBee II)
R21B18 Bootloader
Vers: 2.07
build: Jun 17 2019
could not sync with bootloader
Reboot device /dev/serial/by-id/usb-dresden_elektronik_ingenieurtechnik_GmbH_ConBee_II_DE2190945-if00 (ConBee II)
Reboot device /dev/serial/by-id/usb-dresden_elektronik_ingenieurtechnik_GmbH_ConBee_II_DE2190945-if00 (ConBee II)
deCONZ firmware version 266E0700
R21B18 Bootloader
Vers: 2.07
build: Jun 17 2019
could not sync with bootloader
Reboot device /dev/serial/by-id/usb-dresden_elektronik_ingenieurtechnik_GmbH_ConBee_II_DE2190945-if00 (ConBee II)
R21B18 Bootloader
Vers: 2.07
build: Jun 17 2019
could not sync with bootloader
Reboot device /dev/serial/by-id/usb-dresden_elektronik_ingenieurtechnik_GmbH_ConBee_II_DE2190945-if00 (ConBee II)
R21B18 Bootloader
Vers: 2.07
build: Jun 17 2019
could not sync with bootloader
retry, failed
1054: Error: (assert) n == CMD_deconzVersion.size()