Need help unlocking GTX 860m, max TPD and voltage

[distantdk]

Hi at Techinferno

My Clevo is a W350SS, and hoping to get some more power out of it so i can use it a year more, before getting a faster one.
I cant find a suitable vbios for my gtx 860m - GM107 - Maxwell RevA2.
I can find versions with higher core and memory, but i really need to unlock max TDP, and i need to be able to adjust voltage on the card.
With max oc atm +135 core and 250 memory i am still under 70 celcius, so heat is not a issue.
But the card drops out sometimes when i oc, because of lacking power.
Also alot of the vbois i find is keppler,, and i am uncertain whether it will work or not.

Hope someone here can help with their vast experience