I’ve compiled flashrom version 1.4 and flashprog version 1.1, using MSYS2 and DJGPP (12.2.0 Standalone as per i write this, since i use MSYS2 instead of MinGW), based from information in this page, and sourced from both github page respectively (Flashrom | Flashprog), using pciutils 3.13.0 instead 3.5.6, and used CWSDPMI.EXE from pciutils-3.12.0-djgpp instead. Commands remain the same.
Both natively support Promontory AM4. Could be used on MS-DOS and FreeDOS. Since i use B550M Pro4 with 5700X, i couldn’t dump or flash/write due to im using AGESA 1.2.0.C and it does have AmdSpiRomProtectDxe, but the tool are able to detect my bios chip (Winbond W25Q256JW, i didnt know what my chip before i use this) and the platform i use.
Here are the files: Flashrom v1.4 DOS | Flashprog v1.1 DOS (CWSDPMI.EXE v3.12.0 included) (280.6 KB)
As always, DWYOR.