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2 Posts

12-26-2019

US

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Replacing W-BIOS with P-BIOS (Non-Absolute Persistence Module version)

2019-12-26, 4:18 AM

I would like to flash the P-BIOS (Non-Absolute Persistence Module version) on my X1C7. Both the P and W versions are listed in the LVFS and on the Lenovo drivers download site.

 

Is it safe/supported to move from one BIOS varient to another? If so, is it just as simple as running fwupdmgr aginst the desired .cab file?

 

fwupdmgr install N2HET43P.cab

 Thanks

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2 Posts

12-26-2019

US

3 Signins

27 Page Views

  • Posts: 2
  • Registered: ‎12-26-2019
  • Location: US
  • Views: 27
  • Message 2 of 4

Re: Replacing W-BIOS with P-BIOS (Non-Absolute Persistence Module version)

2019-12-31, 2:48 AM

So I went ahead and tried to flash N2HET43P on top of N2HET43W. It failed instantly and the system rebooted so quickly I could not read the error message that was briefly displayed. It didnt break anything at least, which was my biggest fear.

 

Can somebody from Lenovo post offical instructions on how to switch to the P version of the BIOS on the latest Thinkpads?

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63 Posts

07-22-2019

CA

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Re: Replacing W-BIOS with P-BIOS (Non-Absolute Persistence Module version)

2020-01-03, 22:15 PM

I'll ask the BIOS team and see what they come back with. Not tried it myself :)

Thx

Mark

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63 Posts

07-22-2019

CA

118 Signins

1036 Page Views

  • Posts: 63
  • Registered: ‎07-22-2019
  • Location: CA
  • Views: 1036
  • Message 4 of 4

Re: Replacing W-BIOS with P-BIOS (Non-Absolute Persistence Module version)

2020-01-06, 13:37 PM

Hi,

 

I got the following from the BIOS team:


How to install P-BIOS.
W-BIOS to P-BIOS is acceptable by following way. But once P-BIOS is installed, user can never return to W-BIOS. Please advise this important restriction to customer.

1. Open BIOS Setup.
2. Move to Security -> Absolute Persistence® Module.
3. Select Permanently Disabled. Then, press F10 to Save and Exit.
4. Install P-BIOS. Then, BIOS is automatically moved from W-BIOS to P-BIOS.

 

Hope that helps - let me know how it goes.

Mark

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