Sorry, I noticed that later, but planned to edit that in when I added example of this Qflash block removal.
Here is generally how to edit BIOS post-Mod to allow Qflash to accept the image. You do this by hex edit on the entire BIOS image after all your other mods are done.
Don’t do this mod with UEFITool, you can find this and extract RAW location, but when you put back it always rebuilds too many sections, and trying to mark do not rebuild causes it’s own issues.
In case anyone planned to try and do that while doing other mods while in UEFITool. Best to do this one after all other mods are done, by itself, on the final BIOS image as a whole via hex edit.
Search BIOS w/ hex editor to find string $BDR, 4-6 lines below this you’ll find section of 10-12 count (usually) 00 bytes, followed by 50 01 or 40 01 and then next byte varies usually 03 or 04 or 07, followed next by 01. This last 01 you change to 00, this is what removes the block.
I’ve always seen 40 or 50, then 01, but next digit varies, then 01 again for the default block. It’s hard to explain because the bytes leading up to the byte to change are not always the same, but the general area is easy to spot, so once you are familiar with looking there you will easily recognize.
Here’s what that looks like in F7Mod BIOS, with the block still in place (01)
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