X470 Bios update USB no longer working

Hi all,

Long story short. Tried to upgrade my 2700x to a 5600x. Updated bios as per the manufacturers instructions but could not get the new processor to run.

Next option was to try the previous version of the bios. However when i have gone to load the bios version on to a usb flash drive none of my usbs will show up now.

It seems the bios update has done something to my usbs not recognising usb sticks.

I have tried absolutely everything to get the usbs working short of reinstalling windows. (can't create a windows usb installer either because of this)

USB mouse keyboard etc are all still working fine.

Please help with any suggestions. I am at a complete loss how to resolve this.

Mobo is the X470 Taichi with version 4.70

For the new CPU, did you perform a full CMOS clear? Try pulling the battery,
disconnecting the system from power and holding the power button in for 10 seconds
or so to fully discharge the capacitors. Leave it like this for 10 mins or so then
put the new CPU in and try power it up. Make sure you leave it powered on for
at least 5 mins, sometimes it will power cycle a few times before springing to life.

datonyb wrote: got a spare sata drive ? load the bios file to a sata drive and flash from that destination

I tried this with an ssd but couldnt get the thing to format into fat 32. I do have a spare mechanical hdd may give it another shot