@eren97 Hi and welcome to the Win-RAID forum.
EFIFlash has not been updated since 2021 and likely won’t work with 500 series motherboards.
You may be able to use Intel Flash Programming Tool (FPT) to get past the oemid mismatch but you must be 100% sure that the BIOS image you want to flash is compatible with your motherboard.
Unlike Qflash or Efiflash, FPT will not check if you are flashing the correct BIOS to a matching motherboard so you can brick your motherboard if you cross-flash the wrong BIOS! Be very careful!
First you will need to download the correct version of FPT for your motherboard (v15.0) from this thread:
Intel (Conv.Sec.) Management Engine: Drivers, Firmware and Tools (2-15)
Scroll down until you find ‘CSME System Tools v15.0’ and download the package CSME System Tools v15.0 r15.rar from Mega.
You will need to extract fptw64.exe somewhere to access it from a command prompt.
Before you do anything you should make a complete backup of your current BIOS.
You can do this by running the Windows version of FPT from an elevated command prompt:
fptw64 -d bios.bin
DISCLAIMER There is always a risk when flashing the firmware of any motherboard. You must decide if you think the risk is worth it - if you don’t know how to recover your motherboard from a bad flash then I don’t recommend that you attempt a BIOS upgrade/cross-flash. I am not responsible for any problems that arise from your actions.
To flash the F19 BIOS run the command:
fptw64 -f H510MH.F19
Once the flash operation says it has completed successfully type the following command to IMMEDIATLEY reboot and load the BIOS you just flashed;
fptw64 -greset
This will reset the ME microcontroller so that it loads with the new firmware.
Note that your PC will restart instantly without any warning as though you have pressed the reset button.
Once the system has restarted a couple of times you should enter the BIOS and check that it is on version F19.
Reset the BIOS to optimized defaults (F5) and then save and exit (F10).
Do not load any previously saved profiles, you will need to set up the motherboard manually.