[REQUEST] Lenovo Z50-70 (i7)

[Yvonne]

Hey there, I would like an unlock (advanced tab) for my BIOS. Is it possible?
Also, please tell me if you give me a link on how to put this bios on my existing one, should I use the lenovo utility?
Thanks in advance!

ROM - https://www.sendspace.com/file/asd1hl
Result - https://www.sendspace.com/file/sugs6h

[Oleh]

maybe

[Oleh]

Hey there, I would like an unlock (advanced tab) for my BIOS. Is it possible?
Also, please tell me if you give me a link on how to put this bios on my existing one, should I use the lenovo utility?
Thanks in advance!

ROM - https://www.sendspace.com/file/asd1hl
Result - https://www.sendspace.com/file/sugs6h

http://rghost.ru/76CfDsskb
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[Yvonne]

Thanks!
Can you show me a tutorial on how to flash this?
Thanks in advance

[Oleh]

Create boot usb-stick, copy the files there
reboot and run flah.bat

[Yvonne]

Thanks for the instructions.
When I tried, I got Error 280: Failed to disable BIOS write protection.
Any ideas

[Oleh]

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[Yvonne]

As agreed, here are the new attached files (I successfully downgraded my BIOS)

Result: https://www.sendspace.com/file/pec86f
Rom: https://www.sendspace.com/file/fshwfx

[Oleh]

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[Yvonne]

Hi.
Thank for the efforts. However I got Error 28: Protected Range Registers are currently set by BIOS, preventing flash
access.
Please contact the target system BIOS vendor for an option to disable Protected
Range Registers.
I tried to run prr2.exe but it was not successful. Any ideas?