W540 BIOS Update?

[ntd168]

today i check driver bios of w540. My bios is 2.28 but now BIOS from Lenovo is 2.27?

what happen with 2.28?
can i rolback to 2.27?

[Amy_PI_Lenovo · Accepted solution]

Due to a miscommunication, the latest BIOS for several ThinkPad systems were accidentally removed from support.lenovo.com. Affected systems are: T550/W550s, X140e, T540p, W540/W541, X1 Carbon 2^nd Gen. They have since been restored.

Please note that a security vulnerability fix was included in BIOS v2.28 which will prevent customers from rolling back to v2.27.

Thank you,