Crazyflie m2 led light remains solid blue while working on crazyswarm

[rajatag77]

Hi,
I was working on Crazyswarm. It worked for a few runs then this problem occurred.
When I turn on my crazyflie only M2 lights up solid. If I try to put it on bootloader mode, only m2 blinks.
Only the M2 Led is fully lit (Blue) when I plug the USB cable.
With battery plug-in, same result: only M2 blue Led fully lit.
I can't charge the battery.
I have several batteries (crazyFlie2 batteries) and tested with different ones: the same result.
I also tested several USB cables, without success.
Board is clean. No big crash or shock on the board...

I was working on Crazyswarm. It worked for a few runs then this problem occurred.
VCC measured is 3V.
Also, I have started the board in bootloader mode by holding the power button and starting it for 3 seconds until the M2 led starts to blink to check if M3 led starts to blink then. No luck...

The VCC is at 2.99V so that's not the problem.
I tried using the cfclient to reset the bootloader using the instructions (replug radio, etc) and nothing happens.
I have changed out the batteries and left the crazyflie unplugged for a few minutes.
I tried powering it just over USB and there is no change.
I tried using the cfloader flash tool but it says it can not connect to the bootloader.
I also tried cold bootloader mode with USB as well as Batteries.

[whoenig]

This seems like a hardware/firmware issue, and not a Crazyswarm issue.

Duplicate of bitcraze/crazyflie-firmware#1090.

[knmcguire]

We will answer this in another duplicate in our discussions: https://github.com/orgs/bitcraze/discussions/172