[REQUEST] BIOS unlock for HP Pavilion dv6-6b54er

[HappyFace123]

Hello!

May be some kind soul would help to unlock BIOS setup menu, appreciate any help!

Model: HP Pavilion dv6-6b54er

Current BIOS image: http://ftp.hp.com/pub/softpaq/sp57001-57500/sp57474.exe

[originally (when I took photos) version was F.1C, but I managed to downgrade to F.19, and unfortunately, for reasons you may know ("Boot block can not support to downgrade...") I couldn't downgrade to F.02, that is stated to be moddable]

Here are the screenshots (but consider current BIOS version is F.19, not F.1C):

https://cloud.mail.ru/public/d9e794275885/DSC_0025.JPG

https://cloud.mail.ru/public/09047434c1db/DSC_0026.JPG

https://cloud.mail.ru/public/0a73a41e0cf4/DSC_0027.JPG

https://cloud.mail.ru/public/5501e734e234/DSC_0028.JPG

https://cloud.mail.ru/public/ca2eaa99a14b/DSC_0029.JPG

I wish that there is still any hope for this!!!

Thank you!

P.S. I need to enter Advance settings of the BIOS to alter some settings so I could setup good old XP on my laptop. So I guess either unlocking F.19 BIOS or helping to downgrade to F.02 (and then still gonna have to get unlocked ROM :-)) would do the thing!!