I've just installed BIOS 1.12.1 and now I can't undervolt my CPU anymore. Before the BIOS update I was able to underclock the CPU to -0.150 mV (Core/Cache Voltage Offset via Intel XTU), which is the only way I found to keep the CPU from thermal throttling. Now, the Intel XTU core voltage offset slider is disabled, furthermore I'm not able to rollback to a previous BIOS version (1.11.1 or 1.9.1). I got this error message while running the BIOS update: "ME Firmware EndUpdate Failed Error: 0x000001F3".
Windows device manager shows no errors on the Intel Management Engine Interface.
ThrottleStop also has no effect anymore.
Now, my CPU is thermal throttling like crazy! This is unacceptable, please help.
Dell implemented Intels "advice" to deactivate undervolt because of Plundervolt, which is a theoretical exploit which in theory could leak keys and information. Read about it here: http://forum.notebookreview.com/threads/black-list-adjustable-voltage-control-turbo-ratio-limits-are...
There is no reason to force this, and give no option to deactivate it / reenable voltage via bios if you want. I would try to refund your laptop or sue Dell.
It let me roll back to 1.11 but did not reenable voltage control, looks like that part of the flash is irreversible. That <Profanity removed>. Got this laptop in March, got like a week of undervolting with it.
Take a look at what I did to solve the overheating issue on the link below.
Then came Dell and the BIOS 1.12.1 and ruined everything...
Please check alternative thread on this problem:
One user their suggested a solution, which seems to be working (I confirmed on my G5 and posted what I did to re-enable voltage control).
On Inspiron 5570, I need to downgrade otherwise with the latest firmware 1.2.3, every game crashes after a few minutes or has really poor performance throughout. Before the update, I had bios version 1.1.8 and it worked smoothly.... But I can no longer downgrade even using ctrl+esc and BIOS_IMG.rcv method.
Just received the update. Bought my G5 a week ago. And the only reason i was gonna forget about buying it was because of thermal throttling issues. But then undervolting boosted the cpu from 3.4ghz(due to thermal throttling on i7-9750h) to 3.86ghz and i thought it was a good buy. Unbelievable blunder by Dell. It's a gaming laptop for God's sake. Either Dell is gonna go down in sales or AMD is gonna go up in sales.