Bios Mods -The Best BIOS Update and Modification Source

HI I Have a DC7700 SFF that I updated to v1.16 in description said..
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WARNING: After installing this BIOS version onto the system, unsigned BIOS

versions cannot be installed onto the system.
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v1.06 said it added .......  ENHANCEMENTS:

- Updates the Intel Processor microcode for processors having CPU IDs 6F6, 6F2,
6FD, 10676, and 1067A
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I'd like to remove everything whatever I don't use except e6300 SL9TA (06F2h) as it's my backup CPU.
Then ADD the Following L5320's although what I have is a 6F7 (SLAC9)
6F7 (SLA4Q, SLAC9)
6FB (QWVO, SLAEP)
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http://www.mediafire.com/download/2uhl29..._Rev_A.exe
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Anyway I had someone add microcode for Xeon L5320 to v1.16 and it bricked it... beeping and red lights blinking...  Performed this...

https://www.bios-mods.com/bios-recovery/...-recovery/

I want to DOWN-GRADE to v1.15 to avoid the unsigned restriction and mod the microcode for xeon L5320...

Adding BIOS.WPH didn't work it needed a .BIN so I added 7E1_0115.bin and the flash began... 0% to 100% ... turn off computer.. turn on... same beeps to recovery 0% to 100% ... restart .. same thing.... I don't know what I'm doing wrong.

There's a Boot Block jumper on the Board... among cmos battery etc etc

THANKS

PREVIOUSLY PRIOR TO BIOS MOD ON v1.16 BIOS I RECEIVED THIS MESSAGE WITH L5320...