10-31-2018 08:49 PM
I do not see any BIOS available for that laptop. It appears to be an older laptop that has been EOL(End of Life). Any available drivers will be at the below site.
I do not work for, nor do I speak for Lenovo. I will not respond to unsolicited private messages. Questions belong in the forum so it may help other forum members as well.
TP 25 Retro, X1 Yoga 3rd Gen, W510 850 EVO, A30p
Retired 385D, A20p, A21p