I did but there is no information,look at the pics.. when I click to IRST wants me to choose between IRSTe only.
Should I re-install windows?

When I disabled CSM then in the SATA Configuration with RAID mode IRST is disappeared. so after as you said I power off the pc after 1 min restart and entered in the bios bu I can't see IRST. Do you think my motherboard is bricked or corrupted? Because every changes is failed from the bios.

@Fernando I'm just installed your R4G.CAP modded bios and still everything is the same. Still can't access IRST,I pressed CTRL+I then my boot giving me blue screen error. My cpu is intel core i7 4820k that is why giving me error because does't support IRST then I need to flash from another method or before need to downgrade bios I think. I decided 4901 bios is not compatible with modding,maybe in this bios file version having something locking security to disable modding. I tried 5 usb stick and no luck. Two 8 gb,two 4 gb and one 2 gb with FAT32 formatted.in the pic with red signed only accepted my motherboard to install flashback bios update,Kingston 8Gb.
What do you suggest?

@Fernando so I'm just update with EZ Flash Utility from the BIOS to previous 4804 bios version is succesfully installed. I can now know if mod bios works or not. so I'm going to flashback method with your R4G.CAP wish me luck!
I will update news soon.

@Fernando Unfortunately Asus Flashback Method isn't working,now I'm sure with 100% so the all matter is find a way update to Mod Bios with another method. What do you suggest?

FINALLY WORKED!

Dear @Fernando and @Paulos7 and @Lost_N_BIOS I appreciate you many for trying to helping me in this situation.Very Big Thank you all!

So how did I do that?
First,I tried THIS METHOD and finally I updated Fernando's "R4G.CAP" so after I entered in Bios and I changed CMS Options with UEFI and I disabled Secure Boot,Fast Boot Disabled and saved with F10 and shutdown my pc first. then I plugged my HDD again and Showed up my "970 EVO SSD" with PATA and PATA SS in the "Boot Priorites" I attached the pic. I'm very happy,I think It was worth it at the end of 4 days. I couldn't have done it without you guys... especially Fernando! you're the best! Thanks again.

@memomix,
I didn't watch the whole video, but I guess it showed you a different way to flash the BIOS with AFUDOS, correct? I noticed that it said CSM had to be enabled for AFUDOS to work. I don't have any experience with EZ Flash, but I wonder if CSM needs to be enabled for EZ Flash to work also? Anyway, I'm glad to hear that you finally got it to work.

@Paulos7 yes with AFUDOS I created a bios boot usb. I tried with CSM Enabled to EZ Flash but EZ is only accepting official bios not with modded.Anyway thank you again.

Zitat von Fernando im Beitrag #354

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If you should be able to get the modded BIOS successfully flashed, I recommend to additionally update the outdated and vulnerable CPU Microcodes of your BIOS. The attached BIOS doesn't contain it, but I have already prepared such BIOS for you.

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