Why do you think that you need to roll-back?
Each BIOS-update typically is 95% the "same" as the previous, so it's strange that the "new" 5% could be causing a problem.
What has stopped working?
Did you use the BIOS-update utility to create a 'backup' of the old BIOS? If so, re-flash with that code.
If not, look at the web-site from where you got the updated BIOS;
perhaps, it also offers back-level versions of the BIOS.
Re-flash your BIOS, with the older code.
the problem is after updating bios , when i connect a usb drive it notifies to connect it to usb 2.0 port and the copying is very slow as well as writing to it.
what i should do
as wel i try to change bios settings for usb 2.0 but the settings are absent unlike before
The USB device is capable of USB 2.0 (high-speed) operation, but either you are connecting the device to a USB 1.1 port, or the device-driver that Windows is using is *NOT* the USB 2.0 device-driver. Access DEVICE MANAGER, and double-click the USB device, and click UPDATE DRIVER, to search for a better driver.
i have updated to previous bios version provided on biostar website now its ok ,thanks for your usefull reply
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