haw can y upgrade the firmware

better english

I recently did a firmware upgrade for my openmv camera from version 2.6 to 2.8. after this I could no longer work with the camera, only flashing LEDs.
How can I go back to version 2.6 and with which program?

Hi, please see our GitHub repo: Releases · openmv/openmv · GitHub.

Go to Tools → Run Bootloader in OpenMV IDE.