I tried prime95, after around 15 minutes it froze.I did nothing at all, what I found is unplugging the Power cord is causing not booting with the coffee Lake. If I put in Skylake & Switch it out it boots. Guess I have to connect the two pins
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And which settings do I have to Change ? Ac dc loadline & no Auto voltage?

Btw I guess there was some silver paint left from the failed attempts between the two Pins

@Fatwaaa - Redo the mod and edit your backup instead, flash it back in

@PCGH_Torsten - SKTOCC not needed here on a few Gigabyte I tested B150N-Phoenix Wifi, Z170N-Gaming 5, one other too but I can't remember which model.

And how do I overclock? It always stays on 4.3 GHz on all cores while I put a 46 core Ratio

Cinebench run was successful, guess Im stable now

Maybe I flashed the wrong rom without the xsyncallcore or sth? Or do I have to set sth in the bios that I can use my own core ratio settings?

Also can I reflash now after using the programmer with usb flashback without problems?

Btw if I use the intel xtu to overlock I can use up to 4.7 ghz but if I reboot the overclock doesn't stay, the processor will stay on 4.3 ghz

Help please some one here. I cant flash my asrock z370 pro4 with ch341a programer v1.18. They have a winbond chip W25Q128JVSQ and don't detect the chip. Tried with Asprogramer 1.41 and flashrom in linux too, same problem. using the asrock bios_ph1 header and also soldering wires directly to bios in motherboard. I want to downgrade ME version to 11.7 and add cpuid for skylake and kaby lake cpus.

coffetime and all in one tool cant read my backup bios file sir

Zitat von kazp3r im Beitrag #1005

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Hello Guys

I hope I can find some help, I have a Asus Z270-A Prime MB and a i5 - 9400F CPU - it has a U0 stepping
I believe I already modded the BIOS, however whenever I install the 9th gen CPU the computer it does not boot, I have already connected the 2 pins on the CPU so that is taken care of,(I can upload a picture if needed), is there a way I can confirm if the BIOS is properly modded?

I believed is flashed properly since I had version 1009 and I was able to flash the version 1302 moded.

Please let me know what else is needed from me
I am currently running a i5-6500K and the system works fine with the i5-6500k

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@Lost_N_BIOS: Nice to know :-)

@davidtheking: It could well be that SKTOCC is only checked on cold boot, just like RAM is not fully initialized after return from soft-off. However I would recommend to unplug PCs before changing CPUs. ^^ Perhaps this does also influence OC possibilities. I have never heard of multi not working with mod UEFI, but if your board only boots because it did not realise CPU swap, it might also apply OC locks for old non-K processor. You might also check/increacse power limit, perhaps the CPU could go higher but runs into throtteling early on. (Only guessing here, as said: No one reported such problems before)

Regarding voltages: Check acutal Vcore in System both idle and load and adjust accordingly. If you can already run Prime for a short time, board is doing quite well an should only need a few dozen millivolts either offset (if idle voltage ist rather low as well) or adaptive (if only full power szenarios are instable.)

Under load I get around 1.12 volts, I put llc to Level 5. Is it enough voltage? Prime is stable now, I applied silver paint to it. Maybe the sktocc is still not 100% fine so the overclock resets every boot or I should isolate the two pins

For 4.3 GHz, 1.12 V is at the lower end of auto settings. I usually test with 9900K and have seen from 1.04 to 1.38 V at 4.3 GHz applied automatically (few go above 1.25, though). However auto settings always include some margin to account for variability in CPUs, so an average CPU should be fine with this. If you encounter stability problems or want to overclock however, higher voltages might be requiered. 1.30 to 1.35 V are considered acceptable and 1.4 to 1.45 are regularly used to squeeze out the last MHz. Ample cooling provided, of course.

I have no further ideas on OC, though, beyond power limits. SKTOCC is a hit or miss and if the system boots cold than it is "hit".

I see in a utility called throttlestop that a pl1 limit on the cpu & edp limi on the cache is yellow. Maybe this is causing the issue?

Edit: The pl1 limit is gone if I use more voltage. Still the edp limit is there, what can I do about it?

Edit2: The pl1 limit is back after reboot

Also I see that only 4 cores are getting overclocked, the last 2 I have to set manually.

I am not familiar with throttlestop. HWInfo marks limits red if they are reached and also has a deticated yes/no entry for that. The PL1 displayed is defintley high enough for any oc :-)
"EDP" limit says nothing to me to be honest. I could guess what the acronomy stands for, but I would not know, which component it relates to. Again: Try HWInfo, which lists parameters sorted by components.

4 core overclocking could be an UEFI issue, but not directly related to the mod. Have you used "all cores" option in UEFI? Per-Core-OC will only work on the first 2/3rds of the cores of an i5-9000 because the UEFI simply does not have option for 5th and 6th core. But usually "all core" should work no matter how many there are. I have not heard of other users having this problem, though.


P.S.: You can takte screenshots in UEFI to USB-drive (should be F11 key, but perhaps I am mixing up brands). Much easier to read for us. ;-)

Thx for the help, everything is green in HWInfo but the VID reads out 1.38 Volts while cpu-z says around 1.2v core voltage(on a 4.6ghz oc) and yes I used the all core option in UEFI but it seems like it just stays at default values when I boot up, after that I use Intel overclocking utility to set the 4.6 ghz. Guess I'll have to check the processor if only the 2 pins are connected or sth

Edit: No limits anymore, I did nothing just left the pc running for like 2 hours

@guspaz - For W25Q128JV >>
W25Q128JV - works with 1.18 (read OK, not write) or ASProgrammer 1.40/1.41 (Should be OK)
W25Q128JV - Colibri ver. 1.0.1.62 confirmed write OK
Software package with both above mentioned - http://s000.tinyupload.com/index.php?fil...213094641136166

@kazp3r - Isolate pins as mentioned in all guides, once you get programmer let me know and I will make proper BIOS for you so there will be no mod BIOS concerns
When it arrives and you post back, be sure to tell me your old CPU model, and your new CPU model AND SSPEC off top of CPU

@davidtheking: VID is not Vcore! There should be a separate read-out for the latter one somewhere along the mainboard tabs in HWInfo. Nice however that everything works now.

@PCGH_Torsten I know, but the VID was pretty high for me. But I guess this is normal, the funny thing is everything works now right from BIOS & I don't know why. Maybe the silver paint had to dry a little further or sth