how to change smbios on boot?

Hello every body.

I have a small problem, i successfuly installed sierra on my asus p8p67 rev3.1 with 2600k i7 processor and Gtx 570. When i use clover configator for setup smbios to imac 14.2 and set nvda_drv=1 with webdrivernividia and save to efi/clover/config.plist. After this on boot with boot flag -v only i have black screen. i try several boot flags i have black scren or my Pc restart.
Finaly in boot option on smbios my imac is on 12.2 and grapgics injector only, so i change imac 12.2 to 14.2 and enable also webdriver for nvidia. Lucky i start sierra with full resolution. my question is how can i change smbios on boot option to set imac 14.2?

Ps : i change many time with clover configurator and change config.plist it will always fix on 12.2 in boot option.

thanks for reply

Boot using your USB, then unmount it. Run diskutil list to find out the correct hdd.
Use EFI mounter 3 (downloads section) to mount correct efi. Open Clover configurator and click on open plist. DONT OPEN/MOUNT EFI FROM CLOVER CONFIGURATOR. Just only th plist. Change smbios. Save n reboot.

dashingncool said:

Boot using your USB, then unmount it. Run diskutil list to find out the correct hdd.
Use EFI mounter 3 (downloads section) to mount correct efi. Open Clover configurator and click on open plist. DONT OPEN/MOUNT EFI FROM CLOVER CONFIGURATOR. Just only th plist. Change smbios. Save n reboot.

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Thank you for your reply i will test soon and i give you if i success. Thank a lot.

So i do what you say in upline but config.plist show me imac 14.2. I think as I have two partition in this hdd maybe it opened another efi (I mean second partition because i had sierra and sierra2)?. After this message i will try open sierra2 and i will see what i discover?.