APM v2.8.0 "Failed to Boot MPU6000 5 Times" error

hello
i am working on my Graduation Project
i made a drone by APM v2.8.0
first of all i tested it with USB power with my computer on Mission Planner and the sensor output value was very good
then i plugged my APM to the battery 12v by PDB (which convert the power to 5v for APM)
using USB power.

After that when i open Mission Planner and i connect it to APM
the Mission Planner refuse to connect and it gives me this message “time out”

in terminal i have the message : “Failed to Boot MPU6000 5 Times”

now i can’t install any firmware
I can’t connect to APM

what can i do ? did i burn the APM ? (it might be because I plugged it using USB power )
i need the APM because I’m getting late and my Graduation Project is soon

please help me…

Possibly. That Flight Controller hasn’t been supported in many years so help is very limited. I would quickly replace it with one that is supported.

thanks for your reply ,

Is there a controller you recommend?
I’m interested in being able to build his own intelligent flight system
In addition to the presence of sufficient references and sources on how to deal with it[quote=“dkemxr, post:2, topic:100470, full:true”]

Possibly. That Flight Controller hasn’t been supported in many years so help is very limited. I would quickly replace it with one that is supported.
[/quote]

Choose one from here. I like the H743-Wing boards.
Matek