Pixhawk 2.4.8 arming problem

I have a pixhawk 2.4.8 and i couldn’t find the category for it. I am having arming issues. I am getting a Prearm: Logging failed. Also a No IO thread heartbeat. I think i need to format the SD card but I don’t know how to do it. Help Please?

Hi, I am also facing the same problem.
Are you using ChibiOS ?
Take the SD card out of the fc and format it as usual ( I think ,fat 32).
As of now, press the RESET button near the USB port when arming fails.
Hope there will be a fix for it soon.

I’m facing same issue.using same FC.
Please help…

If anyone have any idea about this issue, then please help me.