Radiolink Pixhawk unable detect board


hallo sir , i am using Radiolink pixhawk 2.4.8 i have same problem ,how can i fix it ,

“ My Radio link Pixhawk not loading the firmware,when i plug usb into the pixhawk usb not recognize the board , and my Safety Switch flashing 4 times ,FMU power solid green ,FMU B/E no collar . AND “IO power solid green.IO B/E orange ,IO ACT flashing blue” — ? What do I do? How do I arm it?
please help, see this video

Good day, did you try a different usb cable and update the drivers? Sometimes MP don’t find old boards…

Thanks for responding .First time everything went well. Usb was doing work okay .Suddenly I suffered this problem .

which version of MP do you have

first time try with MP v 3.60.after try too boot and reload with V4 latest version,

Just install the last version of MP… is 1.72

were you able to fix it? having the same problem

Get rid of that POS Flight Controller and avoid anything made by Radiolink.