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Posts: 1,412
Registered: ‎06-08-2013
Location: BE
Views: 2,359
Message 1 of 6

T450 failed BIOS update

I got my ThinkPad T450 2-3 weeks ago. I wanted to update my BIOS to the latest version (1.18) coming from version 1.17 as of writing.


When trying to flash my BIOS I get the following message: "Secure Flash Authentication Failed".


Then I arrived at the following KB article which does not seem to work for me at all:


Warm regards,
Jonas Hendrickx

Lenovo Insider - Windows Insider MVP

Personal website: ThinkScopes

Paper Tape
Posts: 7
Registered: ‎11-26-2015
Location: Usa
Views: 2,246
Message 2 of 6

Re: T450 failed BIOS update

I ha be this exact same issue on my T450s, currently at 1.17. I am unable to update to 1.18 or 1.19, even after disabling the rollback prevention. Can anyone from Lenovo assist?

Paper Tape
Posts: 12
Registered: ‎11-27-2015
Location: Boston
Views: 2,207
Message 3 of 6

Re: T450 failed BIOS update

Same problem here. Can someone from Lenovo please assist?

Paper Tape
Posts: 4
Registered: ‎08-04-2015
Location: PL
Views: 2,144
Message 4 of 6

Re: T450 failed BIOS update

My T450 is also affected. I've tried various combinations of security settings with no effect.
Former Employee
Posts: 1,664
Registered: ‎09-16-2014
Location: US
Views: 1,970
Message 5 of 6

Re: T450 failed BIOS update

Lenovo has released a Service Tip that provides a step-by-step procedure on how to rollback to older BIOS versions on T450 and T450s ThinkPads. This will assist customers who receive a "Secure Flash Authentication Failed" message when trying to roll back to version JBET55WW or older.


The Tip can be found here:


Thank you,


What's DOS?
Posts: 1
Registered: ‎09-18-2019
Location: CA
Views: 79
Message 6 of 6

Re: T450 failed BIOS update

This isn't solved for me, the posters (and I) are doing what this Tip says (disable Secure Rollback Prevention in the BIOS) and it still won't update. Has anyone had any luck at all with any other solution?
This is also trying to update to new versions, not to roll back.

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