Hi, all.
Some days ago, I succeeded to upgrade my AQ6 with v6.7 firmware.
Today, I wanted to upgrade v7.0 firmware, since I plugged in DIMU v1.1.
However, QGC showed "Failed to get init ACK from device." (Fig. 1)
I had tried two different AQ6 boards.
I got the identical message.
How to solve this problem?
Thanks for help.