"The MASTER LED on my DVXplorer camera is flashing red. The computer cannot connect to the camera, and the corresponding port is not detected."The device is not recognized by Flashy or Zadig.

[Minh Trần]

[Luca Longinotti]

Hello, this is indeed a rare firmware update gone bad. I see you're already in contact with our support for a replacement, which is the only solution here.

For our records, what version of DV / Flashy were you running on the PC when you made the firmware update?

To summarize all we know on this issue:

- this only affects DVXplorer/Lite, not Mini/Micro.

- symptoms of failure are the MASTER LED blinking continuously and the USB LED staying off.

- there is no hardware issue that we're aware of.

- there was a firmware update for DVXplorer/Lite to add IMU calibration support, which was released internally on 2024-02 and flashed to new cameras from then, and also released officially for older cameras on 2024-10 with Flashy 1.7.1.

- this firmware update required both firmware and FPGA logic to be updated at the same time and be in-sync, or the device won't be able to boot (boot-loop).

- old Flashy versions before 1.7.0 allowed the user to down-grade firmware/logic, so if you opened a new device (build date after 2024-02) with such an old version it would propose an "update" which would actually downgrade, causing the versions to be out-of-sync, and break. As far as we know, this is the root cause of the issues seen by customers. This can also happen if you attach a fully up-to-date camera to a very old system running old DV/Flashy versions: it will then complain about firmware version and offer an "update", which is a downgrade and was never meant to happen, downgrades were never supported and only an error in the Flashy code made the buttons show up.

- due to an error in our CI/CD and packaging scripts, this old version of Flashy was distributed for longer than expected on some platforms, especially Windows and Ubuntu. Flashy version 1.7.2 on 2025-03-01 finally ensured all platforms had the same, fixed code distributed in their DV/Flashy packages.

- old Flashy versions before 2.0.0 allowed the user to update firmware and logic separately, so if they did first update one and then re-plug the device to update the other after, it would break too. We are not aware of this actually happening to users in the wild.

- this kind of failure is unrecoverable, the USB motherboard has to be replaced, please contact sup...@inivation.com to arrange a replacement.

- all our software released after 2025-03-01 should do the right thing, please make sure to run the newest software only, especially when doing firmware updates!

- only do firmware updates if prompted by the software, read carefully: https://docs.inivation.com/hardware/hardware-advanced-usage/firmware-update.html

-- 

Luca Longinotti (llongi)

Senior Software Engineer
iniVation AG - https://inivation.com/
A SynSense Group company

-----Original Message-----

From: Minh Trần <tranmin...@gmail.com>

To: dv-users <dv-u...@googlegroups.com>

Subject: [dv-users] "The MASTER LED on my DVXplorer camera is flashing red. The computer cannot connect to the camera, and the corresponding port is not detected."The device is not recognized by Flashy or Zadig.

Date: 11/28/2025 09:49:27 AM