Change SPD Write Disable to False and you should be able to write to SPD. That is what I normally have to change, then it works, on most systems I've changed it on (maybe all, I can't remember?)
Taiphoon free has a test it will tell you if it can write or not. Change that setting and then test.

OK. Thaiphoon shows something like this, look at attached picture.

What does it mean, I could do the spd write or not. In general it looks like I could program XMP but what about SPD??

Did you disable SPD Write Protect (ie set to False) in BIOS? If not, do that first, then select one of those ONLY and hit the check button
If you did already make that change in BIOS, then you cannot write to SPD due to RSWP - http://www.softnology.biz/tips_wptest.html & www.softnology.biz/faq.html
See also - http://softnology.biz/tips_spdwritecap.html

I am unsure if this means hardware flash programmer also cannot write to the chip or not, if you removed it and tried to manually program.

@chinobino may know more about this than I do, I only know some boards let you once you change the BIOS setting, others don't, and that this was MUCH easier on DDR3

I took a look at his SPI dump in AMIBCP and I can't see 'Memory SPD Write' (AKA SPD Write Protect) where it is on my board (OverClocking Performance --> Memory Overclocking).

There are some strings that reference it such as 'SPD Write Disable' and 'Enable/Disable setting SPD Write Disable. For security recommendations, SPD write disable bit must be set.'

Maybe I am missing something but I can't see where to enable it.

I have only saw spd write disabled as @chinobino said but I have it set as disable/false. This one you can see at photo on previous page. Maybe it is still locked and if not it looks like only xmp can be written if I am not mistaken.

And maybe due to this lock I cannot set ram voltage?

This lock has nothing to do with ram voltage @Krzyslaw

@chinobino - this setting often located here (in this BIOS too) >> PCH-IO Configuration page near bottom.
I "assume" he's made it visible in BIOS, not sure, but I assume he did and that's his image above (I didn't edit his BIOS for this)
It is possible, that he made it visible, but then still him changing it does nothing and it needs manually edited at all NVRAM locations by hand?

Send me a dump of your BIOS region again now Krzyslaw and I will hard set it to False at all NVRAM areas.

Ok

I will make a dump. Or maybe you prefer clean bios without any of my further mods that was unlocked by Svet? It should be fine and maybe will resolve my issue about nvme. FIT should not be broken but it will need me fw downgrade 11.7.0.1229 with transfering all settings and icc and ucode downgrade to 70?

Just dump BIOS as you've been using it now. I sent you BIOS before with all those changes you just mentioned, if you are using that, it's fine, send me dump. We're just testing if I hard set this SPD setting in NVRAM if it allows you to write SPD or not

Ok. Will do it soon.
P

Actually, also be sure you set SPD Write to False, then save and exit before you make the dump too, this way I can see how many times in what areas your saved setting is changed vs how many are left at TRUE

Dumped with fptw now without issues.

SPD write to false yesterday and didn't touch anything from that time.

By the way
fptw shows that my chip is MX25L6473E while I saw on the chip MX25L6473F, is there any difference. When I was programing last time with ch341a I have used this MX25L6473F in programer software and everything were fine. Is it fptw mistake?

About the chip ID, that's fine, sometimes software doesn't detect correctly (and or maybe made before other chip was released etc) Difference between the two, you'd have to look at the PDF (I don't have time right now), this info is usually near the end of the PDF
I will edit this, and set False in all possible areas

* Edit @Krzyslaw

Thank you.

But you need to wait for me to flash this. Need some spare time.

As I said I can send older dump before my mods for you to check if it does not contain those freaky tweaky things 🤪

You're welcome. No rush from me for you to test, whenever you get time.

As for the BIOS issues I mention, we can fix all that at the end in some final BIOS if you want, once we sort out what all final mods you want, what all work etc

🤪 If we can fix those issues that is great.
In general I would like to remove all possible locks that exists if even some of them would not work, just to be sure that I am free of any locks 🤪
If you can you can tell me what more can be unlocked here or could be done after your last bios version, that would be great and I could write to you.
And if you can fix all the issues please do it at version 3 on the last dump with your hard lock spd write false version so I could flash it one time which for sure is better for my cheap soic clip

After that when we disabled all possible locks and fix issues you have mentioned I would like to try some experimental things like
At the end at final version even try the same ucode mod that was unlocking haswell locked cpus just to be sure and know that I have tried.
Even hard locking settings for cpu mulitpliers at all 38 and even hard setting flex ratio at 30 not 28 like now.