Hi as some people know intel (and subsequently dell) disabled undervolting from the BIOS. I've already tried downgrading my BIOS version in order to undervolt again but without succes. I've tried downgrading using the  executable and the recovery file with resetting by removing the battery and CMOS and disabling updates. Not one time did this work with all the available versions. So I was wondering if someone else did manage to undervolt again or knows where to find an older BIOS version since the oldest available on the dell site is version 1.8.2 from 24 june 2020.

Thanks in advance!