z420/z620 overcklock

Hello, i whant to overcklock 1650 v2 in z420/z620 v2.

For start i am use XTU and it is capeble to overcklock all threads to 3.9GHz

Then i find out that if i ran ThrottleStop and set multipler to 42 after this i can increase overcklock in XTU to 42 too, and 1650 v2 work in 4.2GHz. But in heavy load processor reach 130W TDP limit and drop multipler to 38-39 = 3.8-3.9GHz.

I whant to unlock and increase 130W TDP limit. But i am not know how to do this. In internet i have read that some users get overcklock to 4.8GHz in zx20 v2 motherboard. So i think there is solution to bypass 130W TDP limit. Also i have read that some people use uefitool to patch bios, but i cant find any mentions about uefitool + z420/z620 + bypass TDP limit.

Also i am think about ram overcklock via ram spd mod by Thaiphoon Burner 1600MHz to 1866MHz

Any help would be greatly appreciated.