Still, if you search for a thread on Reddit (I don't know if linking is allowed here) called 'I can Downgrade Dell BIOS to older version by making new Dell BIOS update file,' by vqtrong, you can see how it can be done anyway.

I only performed the upgrade because I knew the option was there, and you made no mention of the irreversible nature of the upgrade in the notes for the release. Dell, if you are going to give me a checkbox for allowing downgrades, it should allow downgrades.

I just reverted to 1.11 and indeed, it will go back to 4.1 GHz.Įven though I have 'allow BIOS downgrades' checked, my system also would not allow the downgrade normally, instead giving me the 'unsupported downgrade' message. Hello, i am stuck, since 1.12 i cannot turbo boost to anything higher than 4.0ghz There's no way it would have done that without undervolting (not to mention getting rid of the long power limit so it could stay at 45w). I ran it for an hour and change (until the folding task was complete) and it stayed at ~3.5 or more and low 70s the whole time. I tried running Folding At Home with 6 threads (custom setting), all six cores maxed out to 100% utilization, and it clocked up to 3.5-3.6 GHz and held it, and temps never got out of the low 70s C on any of the cores. I am not sure why that would be happening, but I can confirm that undervolting is working fine on my G3 (i7-8750h) with the latest 1.12 firmware, which did block undervolting until I did the factory reset (not loading the defaults. Two days ago with 1.11.1 bios everything worked fine (my current bios is 1.12.2). I'm changing it but I don't see any difference while gaming - CPU is still massively throttled. Agree with statement that resetting to factory enables undervolting in XTU.

Intel xtu undervolt