Unfortunately, 4g decode is still not activated
my bios modified with rxbe + uefi patch
Z17MOCF7.51B.bin.zip (7.9 MB)
@kingdzv what happens when you use 16gb BAR size ? 2GB doesn’t work on some LGA1151 boards while larger sizes do. make sure csm and other legacy options are off
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You did type reboot and enter right? because that was the problem with me with the grub not saving
so i did the setup var, and type reboot and enter to make sure it save the settings.
or try do both setup_var and setup_var_3 instead (with reboot typed and entered)
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The var. store size and GUID differs from the target ones as seen on the picture attached.
I think the command should be different: “setup_var_cv PCI_COMMON 0x3 0x1 0x1”.
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Anything larger than 1gb, there is no image (no post)
If right. Perform as directed + set reboot. I also tried with setup_var_3, it doesn’t work
Everything like the previous image that happens
@kingdzv From your screenshot it looks like 4G decode is off. There should atleast be a few device like Audio and ME in 64-bit address but yours shows none.
Working 4G decode should look similar to this (look at the address lengths at end)
Did you try the method Sweet_Kitten gave ?
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What about the BIOS setting @Koekieezz did suggest? setup_var_cv and the other var. store, which I don’t know cos the screenshot was cut.
Give me a hand please.
Tolud is configured good. The memory remap function does everything else later on.
What’s really matter, Above 4G is still disabled. Changing the 0x387 variable is worth giving it a try, but not in PCI_COMMON storage. I’m limited in my abilities to tell what to do next, so lets wait for someone will take over.
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I understand. I also thank you very much for the intention and the help 
there was 2, 1 PciDynamic and 1 the ol regular Setup, so i was confused which is the real setup, since on Setup 0x387 have the toggle for it.
Does anyone have any ideas so that I can enable the 4g decode?
On the other hand, I tried to make the dsdt patch, but I’m having problems
AmiBoardInfo.zip (2.2 KB)
If I use “AMIBCP”, can I enable 4g decode?
I modified the bios, but when I want to update, it says “secure failed” How can I remove the restriction or sign my bios?
UPDATE: In the end I managed to make the modification with AMIBCP, use the following guide to achieve it. [Guide] How to flash a modded AMI UEFI BIOS
When I flash the bios, I see that the options were saved as expected, but when I load windows everything freezes. 
@kingdzv What you say sound like a DSDT issue but AmiBoardInfoTool doesn’t support your mobo so idk how to fix it. Maybe try to boot Linux with 4G on and dump DSDT from there to see if there’s an issue ?
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In the end I was able to make the bios modification, I saved the changes correctly. I could verify that when entering the bios, but then I could not enter windows.
I’m trying another method, but I’m also stuck. Honestly, I don’t know what else to try 
Yes, I understand. There are two setting for configuring Above 4G. The checkbox and the one with toggle.
But why offset is 0x387 after all? I asked a friend of mine to extract Setup IFR tables from the BIOS uploaded.
And the variable offset there is 0x38A. It might be BIOS version dependant, I guess.
I suggest trying “setup_var_cv Setup 0x38A 0x1 0x1”. Let me know if it worked, @kingdzv.
Provided that it didn’t work, and the genuine BIOS is installed in order to exclude any doubts. You may search for DSDT in some other module, even in freeform section.
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Thank you very much for continuing to help me.
I tried, but it doesn’t work, I have some conflicts.
Now GPU-Z does not show anything, windows starts normally… but I notice the pc a little slow
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could you try this (enable above 4g decoding manually like what you did, or if you did flash my bios, try the grub method again like what i suggest before):
ModZ17MOCF7.rar (7.7 MB)
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