Notebook Operating System and Recovery

Hi all,


I actually messed up my BIOS. My original BIOS version was F.66. But then i upgraded it to F.67. Now the problem is, PC is over heating way more than usual and the Battery is draining very fast.  The PC is just 1.5 years old, all these happed after bios update. 

Now i want to downgrade my bios to factory version, from F.67 to F.66.
My System Board ID is: "2184"

[Moderator edited image with Serial Number]

While browsing for a way to downgrade, i came to know that the BIOS file to be flashed should be having a "particular file name"(for the .bin file), which is the board number preceeded by a '0'

So in my case it should be "02184.bin"

Anyways, i downloaded F.66 BIOS file "sp67140.exe" from HP driver website for my pc.
But since i have Version F.67 currently installed on my pc, it won't allow me to update BIOS by directly running the "sp67140.exe" executable. The option to update bios is un-clickable.

So i tried the other option of "Create Recovert USB Flash drive". Well, that too didn't work out.

So, next is manual option. For which i go to the extract location of sp67140.exe, which is "C:\SWsetup\SP67140"

As you can see, the file name's are "02183F66.bin" and not "02184.bin"

Any way i copied all those 4 files as such with no renaming to a USB drive under "G:\Hewlett-Packard\BIOS\Current"

I used the System diagonostic option from startup by pressing "esc" and the "F2" as instructed, then choose firmware management and browsed to USB drive to file "02183F66.bin" file. But it said, selected file is not flashable (Not the exact sentence.) 

I then tried to rename the file to "02184.bin" , then did the same again. This time it said, " Current Version is  F.67 , after update Version is: F.66," it also said, it needs the signature file on the same folder. I clicked next but it said "Unable to open BIOS signature file".

Is there any way to find the required Signature file

I cannot rollback using "Windows key + B" since i messed that up too in an accident. now current version and previous version files in HDD are F.67.

Is there any way to solve this, may be a force downgrade???

Thanks for any help in advance, i hope i give pretty much all details about this problem, Let me know if anything more is needed .

-Nikhil