Thank you @Ravenmaster. 

Thank you @yurasicpark74 and @0mnious for your reply. My usb is 32GB and formatted in FAT32 and also in MBR partition. 
 
A new development for this issue : After the tech support respond to the POST LED 1.5 issue, I have installed all other components i.e CPU (13900K), GPU (RTX 3090), RAM, SSD. When I boot up the system, and presss DEL, there is nothing show on the display, the POST LED in the 00 54 7F 59 loop. So, I took out all the power cable from the PSU except the 24 pin (as I do not want to take out all other installed components), and do the flash bios by following the "Update BIOS without CPU" procedure, with the same usb drive, this time I can see the circle flashing on the POST LED, my happiness end when I see the code E3 on the POST LED. What should I do now ? To uninstall all the components and do the flash again ? Or I can use other version (the version on the usb is 2.03) to update without uninstall components but take out all power cable except 24pin ? Or I should let all power cable connected and do the flash bios again ?
 

Did you try to do the pre-boot flash with everything installed?

Also, do you have an old 1-4 GB (or even smaller) USB stick you can try?

kk700
Thank you @yurasicpark74 and @0mnious for your reply. My usb is 32GB and formatted in FAT32 and also in MBR partition. 
 
A new development for this issue : After the tech support respond to the POST LED 1.5 issue, I have installed all other components i.e CPU (13900K), GPU (RTX 3090), RAM, SSD. When I boot up the system, and presss DEL, there is nothing show on the display, the POST LED in the 00 54 7F 59 loop. So, I took out all the power cable from the PSU except the 24 pin (as I do not want to take out all other installed components), and do the flash bios by following the "Update BIOS without CPU" procedure, with the same usb drive, this time I can see the circle flashing on the POST LED, my happiness end when I see the code E3 on the POST LED. What should I do now ? To uninstall all the components and do the flash again ? Or I can use other version (the version on the usb is 2.03) to update without uninstall components but take out all power cable except 24pin ? Or I should let all power cable connected and do the flash bios again ?
 

You need a flash drive with a maximum size of 4 GB. 32 GB is not suitable for flashing. First, find the flash drive. Then download the bios from the site. Rename the downloaded file to EVGAE699.bin and put it on a flash drive. And then everything according to the instructions.

yurasicpark74

kk700
Thank you @yurasicpark74 and @0mnious for your reply. My usb is 32GB and formatted in FAT32 and also in MBR partition. 
 
A new development for this issue : After the tech support respond to the POST LED 1.5 issue, I have installed all other components i.e CPU (13900K), GPU (RTX 3090), RAM, SSD. When I boot up the system, and presss DEL, there is nothing show on the display, the POST LED in the 00 54 7F 59 loop. So, I took out all the power cable from the PSU except the 24 pin (as I do not want to take out all other installed components), and do the flash bios by following the "Update BIOS without CPU" procedure, with the same usb drive, this time I can see the circle flashing on the POST LED, my happiness end when I see the code E3 on the POST LED. What should I do now ? To uninstall all the components and do the flash again ? Or I can use other version (the version on the usb is 2.03) to update without uninstall components but take out all power cable except 24pin ? Or I should let all power cable connected and do the flash bios again ?
 

You need a flash drive with a maximum size of 4 GB. 32 GB is not suitable for flashing. First, find the flash drive. Then download the bios from the site. Rename the downloaded file to EVGAE699.bin and put it on a flash drive. And then everything according to the instructions.

Thank you @yurasicpark74, I have followed your suggestion, but I can only find an 8GB usb. Anyway, it works. 

kk700

yurasicpark74

kk700
Thank you @yurasicpark74 and @0mnious for your reply. My usb is 32GB and formatted in FAT32 and also in MBR partition. 
 
A new development for this issue : After the tech support respond to the POST LED 1.5 issue, I have installed all other components i.e CPU (13900K), GPU (RTX 3090), RAM, SSD. When I boot up the system, and presss DEL, there is nothing show on the display, the POST LED in the 00 54 7F 59 loop. So, I took out all the power cable from the PSU except the 24 pin (as I do not want to take out all other installed components), and do the flash bios by following the "Update BIOS without CPU" procedure, with the same usb drive, this time I can see the circle flashing on the POST LED, my happiness end when I see the code E3 on the POST LED. What should I do now ? To uninstall all the components and do the flash again ? Or I can use other version (the version on the usb is 2.03) to update without uninstall components but take out all power cable except 24pin ? Or I should let all power cable connected and do the flash bios again ?
 

You need a flash drive with a maximum size of 4 GB. 32 GB is not suitable for flashing. First, find the flash drive. Then download the bios from the site. Rename the downloaded file to EVGAE699.bin and put it on a flash drive. And then everything according to the instructions.

Thank you @yurasicpark74, I have followed your suggestion, but I can only find an 8GB usb. Anyway, it works. 

I don't know if this is some kind of quirk or bug in the EVGA 690 boards, but I have flashed 3 different BIOS's recently on my ASUS Z690 board using a 32GB USB 3.1 drive with no issue's.

hey z690 KP bros. I was hoping to see a patch finally but kinda knew there wouldnt be given how you cant see this forum anymore unless you're logged in
 
see you on the other side.

redteamgo
given how you cant see this forum anymore unless you're logged in

Odd. There are other forum sections that are like that also. 🤔

At this point I’m surprised the forums are still even here.

Flybye
At this point I’m surprised the forums are still even here.

The domain name is set to expire on Friday 28th of March 2025, so looks like we got 192 days left, or 6 months and 11 days.