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Flashing LED EC firmware for X670e crosshair extreme

j1b
Level 7

Is there any way to flash JUST the LED EC firmware?  I've had absolutely zero working Aura lights all year and the last post was useless since I was directed to use the armory crate log form, which I don't use armory crate, and the LEDs were non-existent outside of windows.  This continues to be the case even on the latest bios.  No matter what setting I enable or do, they remain off at all times (THIS IS NOT A WINDOWS ISSUE).  When I updated to the latest bios to fix some instabliity issues which crossing my fingers are actually solved, I noticed the LED EC version in the bios is completely missing.  So I suspect either it's corrupted or completely dead.  Since v3112, which I did install as I've installed every bios update in hopes of resurrecting the lights, you cannot rollback anymore.  So how do I flash the LED EC if I can't use an old BIOS update which includes the firmware?

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j1b
Level 7

Does genuinely no one from ASUS care to have any input how you flash a non-rollback compatible bios to flash firmware that only comes bundle in bios updates?  Really?  I've been reading the manual and it's not clear if the secondary bios is flashable.  If I could power down, swap to the secondary bios, flash it with 2904 which is the last bios to include the EC firmware, then those chips could get flashed and I could go back to the main bios with potentially fixed chips.  Can someone at least confirm if this is doable?