Yes, i totally understand your point of view about flashing Under Windows, be sure i NEVER put online my mod if i don't try it BEFORE.
(I put the screenshot to prove it work really). This is why i'm putting the flash Tools WITH the bios too.
i must admit, like you i suppose, but some years ago, i was furious when i see someone flashing bios in Windows ! ;OD
Probably we are too "Oldschool", LOL
The best way is to flash the bios with the A12 regular version BEFORE flashing the modded one.
Yes, you need to check "programming all blocks"
Be VERY CAREFUL Under Windows.
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1) OF COURSE..... but we are expert here i suppose ? 
2) AC adapter PLUGGED.
3) A well charged battery.
4) ALL antivirus, malware, etc... DISABLED BEFORE flashing.
Keep in mind that certain Advanced bios option could cause blackscreen at reboot, and you need to do a cmos reset to restart normally.
Of course, i don't modify the default setting option list in the bios.
PS : to obtain a 100% working audio under Win10, you need the modded sound driver, because the Webcam Mic doesn't work without this one (you can see in the screenshot ALL input/output are present).
I say that because when something goes wrong with a modded bios, some people think automatically it's due to the modded bios........
