1/18/2024 0 Comments Uefitool image or bios region![]() ![]() I just got the info that my modded bios will only work when FFS header is rewritten. When I reopen my modded file all the GUIDs are the same (including FFS and DXE Core section).ĭo those GUIDs contain checksum,or are those checksums non visible in UEFITool? That’s why I did the replace procedure with MMTool and only used UEFITool to compress the uncompressed modded package from MMTool. "reconstructRegion: reconstructed region size 8A02C0h (9044672) is smaller then original 8A31F8h (9044672)" Open dumped padding in hex editor 4C-5B copy 16 bytes, paste into stock. As above, in latest stock BIOS, extract As-Is 6. Inside BIOS Region Second padding (Above last three volumes), extract As-Is in dump. Save BIOS image, this may be all you need to do -4. When saving the image file I get the error message “Image reconstruction failed” and afterwards another info appears in the message area of UEFITool Extract GbE As-Is in Backup > Replace As-Is into latest stock BIOS 3a. ParseBios: one of volumes inside overlaps the end of data" In the message area the following info shows up: When I replaced the Option ROM for the NVIDIA GTX 850M vBios via RAW section -> replace body, the entry “Raw section” is now showed twice (a display bug?) Right from the start “Image parsing failed - Invalid UEFI Volume” showed up,but I read somewhere that any popups don’t matter. When comparing the differences using an UEFITool NE A59 release that doesn’t have a modification engine, root volume of a BIOS region receives a Text field value: UsedSpace. I did try to replace it directly in UEFITool but I got the error message “Image reconstruction failed - Function called with invalid parameter” when saving the image. The author himself.I feel honored.Thanks for your reply BTW, why don’t use UEFITool to replace the file in the first place? UEFITool managed FFS checksums for you, additional steps aren’t needed.
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