Question How to flash to old bios (ASUS Z170-A)

[bloodedbythought]

I have an ASUS Z170-A with an i5-6600K installed. It was working perfectly (XMP to 3200 on ram, overclocking to 4.5Ghz, etc.) before I updated the bios from 2202 to current 3802.

Once I did the update I cannot enable XMP or do any tweaking without boot time, bios menus, etc. being super laggy - more or less unusable. When I reset CMOS things go back to working speedily.

I know the memory sticks are fine (I did many tests), tried others, etc.

1. Any idea what can cause this behavior?
2. I'd like to revert to the old bios file via flash, but it is blocked since the update (says it is not a valid file). What's a safe way to do this?

Thanks in advance!

 

[bloodedbythought]

Update: I rolled it back to 3007, which is lowest I can go (won't let me flash to 2202). Once this was successful, everything appears to be normal.

For those with this ASUS Z170 boards, do not get the most recent bios - 3802 - as it appears cause issues.

If anyone has more context, I'd still love to hear it.

 

[helpstar]

did you install the latest intel me update as well?

 

[Lutfij]

Do you have a link to your ram kit? As for the sticks, what slots are they populating on your motherboard? You should clear the CMOS after you've verified that the BIOS was flashed successfully.

 

[bloodedbythought]

did you install the latest intel me update as well?

I did not - would that create this issue?

 

[bloodedbythought]

Do you have a link to your ram kit? As for the sticks, what slots are they populating on your motherboard? You should clear the CMOS after you've verified that the BIOS was flashed successfully.

I've done so. The memory is Corsair LPX DDR4 CMK16GX4M2B3200C16
Slots A2/B2

 

[helpstar]

I did not - would that create this issue?

could be

https://www.intel.com/content/www/us/en/support/articles/000008927/software/chipset-software.html