05-07-2018 04:43 AM
we might found an issue with BIOS-Updates 2.48 and 2.49 for T440p.
Our T440p has Supervisor-Password set and Bottom Cover Tamper Detection enabled. If we update to BIOS 2.48 or 2.49 the Bottom Cover Tamper Detection is trigged and Supervisor-Password is needed. Older BIOS-Versions/Updates are fine.
This happends on 10/90 T440p. It is no option to enter Supervisor-Password for the other 80 devices.
Is this a known issue? Is there hope that this will be fixed?
Thank in advance
08-03-2018 07:13 AM
we're running into the same problem right now.
The entire 4 series (X240, T440 and T440p) seems to be affected.
We have 82 affected systems.
Have you had any more insights yet?
If not, I'd open a ticket on Lenovo.
08-05-2018 10:50 PM
unfortunately, no. I had opened a ticket and they promise me to forward that issue. Never heard of it again. I see that there is a UEFI 2.50 out, i have not tried this so far.
Thanks for the information hat x240 is also effected.
08-07-2018 01:40 AM
I was able to reproduce the issue today. I updated a system from BIOS v.2.37 to v.2,48 after activating tamper and setting a supervisor password, I then experienced the symptoms described.
After updating to v.2.50 the symptoms disappeared. Please update your systems to v.2.50 and let us know if this solves the issue for you.
Thanks in advance
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08-07-2018 06:23 AM
the error occurs only once.
As Zippi has already written, it happens for the first time when you install an update which is newer than version 2.47 (so far I can't confirm this because I don't have a test device here which has installed a version lower than 2.49).
Once it has occurred on a computer and the computer has been unlocked using a supervisor password, it no longer appears.
It seems as if the bit, which stores the status when opening the case, is set by the update as if the case had been opened.