pybricksdev flash does not find the EV3 in update mode

[BertLindeman]

Probably a user problem, but I do not understand.

On Ubuntu 24.04.2:
lsusb:

Bus 003 Device 017: ID 0694:0006 Lego Group Mindstorms EV3 Firmware Update

 pybricksdev flash ev3-firmware-build-4054-gitaecbe204_5x5.zip
Creating firmware...
Traceback (most recent call last):
  File "/home/bert/.local/bin/pybricksdev", line 8, in <module>
    sys.exit(main())
             ^^^^^^
  File "/home/bert/.local/share/pipx/venvs/pybricksdev/lib/python3.12/site-packages/pybricksdev/cli/__init__.py", line 570, in main
    asyncio.run(subparsers.choices[args.tool].tool.run(args))
  File "/usr/lib/python3.12/asyncio/runners.py", line 194, in run
    return runner.run(main)
           ^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.12/asyncio/runners.py", line 118, in run
    return self._loop.run_until_complete(task)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.12/asyncio/base_events.py", line 687, in run_until_complete
    return future.result()
           ^^^^^^^^^^^^^^^
  File "/home/bert/.local/share/pipx/venvs/pybricksdev/lib/python3.12/site-packages/pybricksdev/cli/flash.py", line 483, in flash_firmware
    await flash_ev3(firmware)
  File "/home/bert/.local/share/pipx/venvs/pybricksdev/lib/python3.12/site-packages/pybricksdev/cli/flash.py", line 384, in flash_ev3
    with EV3Bootloader() as bootloader:
  File "/home/bert/.local/share/pipx/venvs/pybricksdev/lib/python3.12/site-packages/pybricksdev/connections/ev3.py", line 273, in __enter__
    self.open()
  File "/home/bert/.local/share/pipx/venvs/pybricksdev/lib/python3.12/site-packages/pybricksdev/connections/ev3.py", line 70, in open
    self._device.open(vendor_id=LEGO_USB_VID, product_id=EV3_BOOTLOADER_USB_PID)
  File "hid.pyx", line 143, in hid.device.open
OSError: open failed

Did a pipx reinstall pybricksdev. Did not help.

Did grep in pybricks for LEGO_USB_VID EV3_BOOTLOADER_USB_PID and they fit the lsusb output.

On my Linux Mint system ( Linux Mint 22.1 Xia at Ubuntu 24.04), no problem.

No problem for me as I use Linux mint mostly, but I want to understand.

[dlech]

Did you install the udev rules to give permission to access it?

pybricksdev udev | sudo tee /etc/udev/rules.d/99-pybricksdev.rules

https://github.com/pybricks/pybricksdev?tab=readme-ov-file#linux-usb

[BertLindeman]

Bingo.

Spot on THANK you David.