It would work even with kepton in place, though the pinloading would obviously stay on the high Z270mod level, not the reduced current intended by we-really-need-a-incompatible-socket-for-sure-Intel. Kepton can be removed without traces however. If a small amount of adhesive should remain, just use alcohol/aceton/whatever you are using anyway to remove TIM on the other side of the package.
(Note at Asus and Asrock users: Conducting silver can be removed with an eraser, but this is usually not without traces. I also found removal not to be strictly necessary, but your mileage/amount of short circuits might vary.)
I am happy to report that I got all 16 threads of 9900k to work with my Asus z270f.
At first, I tried modding the bios from 09xx up until latest version and flash them using AFUdos but none of allow my system to boot.
Finally, I use the usb programmer CH341A and the only bios that worked for me is the Asus z370f port one I got from @svarmod .
The only thing that seems not to work is the motherboard RGB and the added LED strips. In bios main tab, the LCD EC and LCD EC2 Version is empty.
Perhaps I need to manually edit that RGB part of the bios. Can anyone point me into the right direction?
Probably the Z370 UEFI donor has different/none RGB controllers. You would need to identify that part of the code and might try to swap in the one from a correct Z270 UEFI. Donāt ask me how, though. The only RGB setting I require ist āoffā. 
E98D33CD-1AEB-46B1-A4B6-0BB4CC655C26 -Replace body PE Image with same guid from original bios;
BC327DBD-B982-4F55-9F79-056AD7E987C5 -Replace body PE Image with same guid from original bios;
611F7FDD-C7C6-4CFE-8072-2155D7B25A80 -Replace raw section with same guid from original bios;
These are the RGB modules.
Hello Guys, very new here.
I have Asrock Z170 extreme 3 mobo, I want to use i3 - 9100 on it.
is it possible? Kindly guide. Much appreciated.
Thank you @Aureliano That is probably what I am looking for.
Update: I was using the wrong tool. Now the old version of UEFITool seems to allow me to replace the PE image.
I have not flash the new one yet but upon verifying the extracted PE Image, both ported bios and original bios are identical.
Is there other guid I should look?
anyone tried the new 9900ks on 100 or 200 series chipset?
Anyone willing or able to port the Maximus X Formula bios to the Maximus VIII Formula?
I recently Picked up a GA-Z270XP-SLI motherboard and Celeron G3930 processor for $40. I am looking at processor upgrades, and am thinking about the I5-9600K or KF. It seems like a lot of people are making this work, but I havenāt seen much mention of Gigabyte boards or particularly this one. I am interested in expert advise as to the likely hood of making this work. I will have to back grade the Bios, as it was recently upgraded to the latest F9d. Is it likely that the backup BIOS could be used to do this. My BIOS change experience is limited to several 775 motherboards modded for 771 processors. If anyone can point out particularly related discussion, that would certainly help. Also curious if my Willem PCB 5.0 programmer, which can program the 25C64 chip, and has dip switches for voltages down to 3.3 might be useful for this MX25L6473E BIOS.
I successfully went back to BIOS version 7 just using the BIOS Qflash and the V7 BIOS file on a fat32 usb drive, with no problem.
How can i do that?
[[File:Ćndcice.jpg|none|auto]]
@robocrazy That motherboard is problematic.
There is no Z370 equivalent to port from.
That board has a 16MB BIOS and is on the known list of incompatible boards for Coffee Lake if you check the table I posted here.
I get it 
thnks for answer.
I take a look at your list and saw NO*** for my Asus Z270f when pairing with i9 9900k. I guess those asterisk mean port bios is needed.
My only problem is the RGB stop working since the port bios didnāt include the LED EC Version info correctly. Any idea on how to look for that?
is pin mod required for all 8th gen mods/swaps? i have a gigabyte h170 eifi and i want to put in a 35 watt i3-8100T
yo, could you help me out if you can? I have an I5-7500 but its starting to show itās age for being a quad core in 2019. Iād want an I7-8700k or I5-8600k and I have the F9d bios version. Should I downgrade to F7?
Does anyone know if Gigabyte Z170N-Gaming 5 (rev 1.0) needs SKTOCC mod done on CPU or not? Pinmod image seems to be saying āConnect = Greenā NO for Gigabyte as a whole. Google not much help, too many people asking about this for too many boards to be able to find good answers.
I looked on the board itself and cannot see anything labelled SKT or OCC. Iād rather not try to lightly jab the socket pins with huge multi meter leads just to find this out if someone already knows.
Would also like to know about B150N phoenix wifi too, in case I end up using this board instead. CPU is SRF6N (i3-9100F)
Maybe @chinobino @_haru @svarmod @dsanke knows for sure? I hope someone can know for sure, so I donāt have to try and measure by socket pins. Iām fine to solder my CPU, but Iād rather not if the board already has these connected.
I canāt find schematic or boardview, unless someone has account at Rosefix and could download both from there for me and re-up?
I made an account, and confirmed it in email, but the thread for hours now tells me I canāt view the thread when signed in due to "Still needing verification?l
* Edit Ahh! Was finally was able to download, grabbed the Schematic PDF not realizing this cost āFake Account Moneyā and new account only had so much, so now I donāt have enough to download the BoardView file 
http://www.rosefix.com/forum.php?mod=vieā¦erby%3Dlastpost
Thanks 
@Lost_N_BIOS
There is no way to determine that without test. If your motherboard behaves like no CPU installed, this explains you need SKTOCC short.
from what iām reading gigabyte bios are different than the rest by using biosdata records? thus complicating the 8th gen microcode mod?
Flashing Gigabyte while avoiding āInvalid BIOS imageā