@tom
Of course we did with SW switch flipped and 'sudo'.
Also we retried a lot of times.

And we got same result in every tries.

@tom

Thanks for reply.

With your recommendation, we followed that guide (https://docs.modalai.com/voxl2-unbricking/#unbricking-your-voxl-2).
But in Initiate Flash step, we saw this lines in host pc`s terminal.

Please check this.

@tom

Here is Ubuntu machine`s screenshot. Left one is normal (one of the units that successfully finished initial setting), and a right one is abnormal.

Hello.

We recently conducted tests on your SENTINEL drones and encountered some issues with one of the units. The issues are as follows.

• When the main power source (Platform Battery) connected with the drone, only the VOXL2 modules light turned on, but other devicess led lights remained inactive.
• We tried to connect the VOXL2s system with a USB C-type connector, theres no linking from the VOXL2 module.
• We followed your provided instructions, attempting to connect it to an UBUNTU PC and using the terminal command "adb devices", but no detection for VOXL2 was registered.

We kindly request your prompt assistance in resolving this issue. Your immediate attention to this matter would be greatly appreciated.

Thanks.