BIOS "engineers" rant.

Dear Microsoft. Just fuck off and die already, there's a good company? I hate Secure Boot, guaranteed to fuck up anything. Also want to find the Asus BIOS engineers and bash their heads together. I want to boot the UEFI Shell from a memory stick to do some UEFI Application development tests of code I'm writing. Stick is MBR formatted so Secure Boot should have nothing to do with it, FAT32 partition, and have done so before from my Asus Z97-K test motherboard after previously lots of angry swearing and Setup change attempts at the zarking thing, but this time it just plain refuses to let me boot UEFI Shell. Removed the keys (PK KEK DB DBX) from SCU menu, set OS to 'other' and the Secure Boot status says "disabled". yet try to boot the UEFI shell and a popup comes up saying "secure boot is enabled, turn it off to boot an untrusted OS". grrrr. Tried flashing latest BIOS, yup, that's still as buggy. tried setting admin/usr pswds as some googled forums suggest, nope, still secure boot disabled but not letting anything boot as secure boot says no. double grrrr...