"UBU not possible remove Security Flash Check" Yes, UBU can't remove Security check "Instant Flash not working moded bios" Yes, Instant flash can't flash modified bios "z370 not possible use this methode" Are you sure ? (it works for my Z370 ) I used this procedure: - upgrade to the latest official bios; - enter into the BIOS and disable SecureBoot, FastBoot and Enable CSM; - boot to Freedos from the USB Flash Drive with Flashrom - make Bios-region dump with flashrom flashrom -p internal -r BACKUP.ROM - modify Backup.rom with UBU (or send me to SLIC modification) - flash modified backup flashrom -p internal -w BACKMOD.ROM
never tryed yet any Freedos with Flashrom flash usb image ?? ok found flashrom exe just not possible download directly web page and rufus make freedos boot but try read and spi mode locked not detect my windbond chip
Thanks for responding. I saw in another post that perhaps it would be possible to generate new RSA keys (public and private) and then re-signing the modded bios with those keys. I looked at the bios BIN file using a hex editor and see strings like these: -----BEGIN PUBLIC KEY-----..MIIB and -----END PUBLIC KEY--. Seems in between those statements are the public keys. Not sure where the private key is in the bios. I also saw " SECURE_HP_SIGNATURE M40 v01.12" and "SIG_END" strings, but in between those characters did not look like your typical RSA private key signature. How possible is it to replace those with a new set, if that's what the checker is checking during boot?