Bricked OpenMV Cam H7 Plus (Green led briefly flashing)

OpenMV Boards
1

I have used my board for a few months before this. Today I connected it to my computer running the OpenMV IDE and it didn’t detect it. When I connected the board to my computer the green led briefly flashed. I then tried the unbricking procedure as descripted in the IDE without success.

2

Hi, the green LED means the bootloader is running on the board.

Can you do this:

Tools->Erase onboard Flash (should be the second option in the tools menu).

This will get rid of any scripts onboard that could be causing an issue.

Do you have any more information?

3

when i try to do that it doesnt detect the camera, gets stuck on loading, could try with a different computer.

4

Yes, please unplug the board, run it, and then plug the board in. It should connect to the bootloader and erase any scripts onboard.

5

it still doesn’t work, it looks like the pc doesn’t detect the OpenMV Cam

6

Managed to do a DFU reset, but when it says to reconnect the board to the pc it doesnt’ detect it, now the green led doesn’t blink anymore

7

./dfu-util -w -d , -a 0 -s :leave -D $HOME/Downloads/firmware_OPENMV4P/bootloader.dfu
dfu-util 0.10-dev

Copyright 2005-2009 Weston Schmidt, Harald Welte and OpenMoko Inc.
Copyright 2010-2021 Tormod Volden and Stefan Schmidt
This program is Free Software and has ABSOLUTELY NO WARRANTY
Please report bugs to http://sourceforge.net/p/dfu-util/tickets/

Waiting for device, exit with ctrl-C
dfu-util: Cannot open DFU device 0483:df11 found on devnum 10 (LIBUSB_ERROR_ACCESS)
Multiple alternate interfaces for DfuSe file
Opening DFU capable USB device…
Device ID 0483:df11
Device DFU version 011a
Claiming USB DFU Interface…
Setting Alternate Interface #0 …
Determining device status…
DFU state(2) = dfuIDLE, status(0) = No error condition is present
DFU mode device DFU version 011a
Device returned transfer size 1024
DfuSe interface name: "Internal Flash "
File contains 1 DFU images
Parsing DFU image 1
Target name: ST…
Image for alternate setting 0, (1 elements, total size = 25176)
Setting Alternate Interface #0 …
Parsing element 1, address = 0x08000000, size = 25168
Erase [ ] 0% 0 bytesdfu-util: Error during special command “ERASE_PAGE” get_status

this is dfu-util output

8

Messaging you for direct help support.