Bios administrator password no code HP Elitebook 8440p

Hi all,
I am trying to update the BIOS driver for a laptop that I recently purchased from a friend. Unfortunately he doesn't know the BIOS administrator password. When I tried entering various passwords three times, I was just informed that I could not update the driver but I did not receive any error code like other users.
Could anyone please advise how to work around this? Any help will be greatly appreciated.
I did take time to read the threads posted with a similar heading but they did not provide a solution to this particular scenario where no error code is given.

Hi,
Unfortunately,  business machines such as Probooks or Elitebooks have more stringent security than consumer models - they don't produce 'halt codes', the password cannot be derived from the Serial No. and the code is stored in non-volatile memory so removing the RTC cell will not reset the password in this case.
If you Contact HP Business support, they should be able to send you a customised SMC.bin file which you can use at boot to reset the password.
Regards,
DP-K
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****Please mark Accept As Solution if it solves your problem****
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