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[Request] Asus B550 Strix F - Adding an option to Max Boost Clock Override
#1
Hi guys, I want to add +300 Mhz as a boost option under the Max Boost Clock Override field on the AMD Overclocking section of the bios. I downloaded the latest bios and found the related field with UEFITool. After extracting the related PE32 image, i extracted it with Universal IFR extractor.

This is the related part;

Setting: Max CPU Boost Clock Override, Variable: 0xAD {05 9A 98 01 99 01 EC 00 00 F0 AD 00 10 12 00 00 00 00 C8 00 00 00 00 00 00 00}
0x9D63 Option: 0MHz, Value: 0x0 {09 0A 9A 01 12 02 00 00 00 00}
0x9D6D Option: 25MHz, Value: 0x0 {09 0A 9B 01 02 02 19 00 00 00}
0x9D77 Option: 50MHz, Value: 0x0 {09 0A 9C 01 02 02 32 00 00 00}
0x9D81 Option: 75MHz, Value: 0x0 {09 0A 9D 01 02 02 4B 00 00 00}
0x9D8B Option: 100MHz, Value: 0x0 {09 0A 9E 01 02 02 64 00 00 00}
0x9D95 Option: 125MHz, Value: 0x0 {09 0A 9F 01 02 02 7D 00 00 00}
0x9D9F Option: 150MHz, Value: 0x0 {09 0A A0 01 02 02 96 00 00 00}
0x9DA9 Option: 175MHz, Value: 0x0 {09 0A A1 01 02 02 AF 00 00 00}
0x9DB3 Option: 200MHz, Value: 0x0 {09 0A A2 01 02 02 C8 00 00 00}

I learned that the last 16 bits are same as the option value, for example last line C8 00 00 00 = 200, or the previous one AF 00 00 00 = 175.
I want to add 300MHz option and as a hex value 300 = 12C. This is what I came up with;

Option: 300MHz, Value: 0x0 {09 0A A3 01 02 02 12 C0 00 00}

I have never modified a bios before, I dont know how to put this modification to bios image. And I also wonder is it possible to recover the bios via Bios Flashback if something goes wrong?

Latest bios dlcdnets.asus.com/pub/ASUS/mb/SocketAM4/ROG_STRIX_B550-F_GAMING/ROG-STRIX-B550-F-GAMING-ASUS-1805.ZIP

Thanks.
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#2
(03-09-2021, 03:28 AM)Iarwa1N Wrote: I learned that the last 16 bits are same as the option value, for example last line C8 00 00 00 = 200, or the previous one AF 00 00 00 = 175.
I want to add 300MHz option and as a hex value 300 = 12C. This is what I came up with;

Option: 300MHz, Value: 0x0 {09 0A A3 01 02 02 12 C0 00 00}
Hi!
Do you think it is possible to create new options so easily? Have you tested your theory? That is, this last line in the quote turned out when you re-extract the IFR after editing the module, or did you just guess how it might look? {09 0A A3 01 02 02 12 C0 00 00} this may mean a completely different option and not what you expect.
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#3
(03-10-2021, 03:34 AM)Maxinator500 Wrote:
(03-09-2021, 03:28 AM)Iarwa1N Wrote: I learned that the last 16 bits are same as the option value, for example last line C8 00 00 00 = 200, or the previous one AF 00 00 00 = 175.
I want to add 300MHz option and as a hex value 300 = 12C. This is what I came up with;

Option: 300MHz, Value: 0x0 {09 0A A3 01 02 02 12 C0 00 00}
Hi!
Do you think it is possible to create new options so easily? Have you tested your theory? That is, this last line in the quote turned out when you re-extract the IFR after editing the module, or did you just guess how it might look? {09 0A A3 01 02 02 12 C0 00 00} this may mean a completely different option and not what you expect.


I am just guessing how it might look if I were to add 300 option based on the other items in the list. I have no experience modifying bioses, thats why I am asking for help from experinced people to take a look at my problem.

I didn't test it, I don't know how to put the modified section in to the image again. Also I wont put this modified bios without knowing if something goes wrong, is it possible to go back to the original bios with Bios flashback usb port.


Sent from my iPhone using Tapatalk
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#4
(03-10-2021, 05:41 AM)Iarwa1N Wrote: I am just guessing how it might look if I were to add 300 option based on the other items in the list.
After making the above changes, you can simply invoke the next setting instead of adding the option you want. Also, it seems that the content of Setup in the BIOS at the link you provided is at odds with yours, so for an example in the picture I used the setting at a different address.
Just a quick example
[Image: example.jpg]
In other words, it is impossible because the possibility does not exist.

(03-10-2021, 05:41 AM)Iarwa1N Wrote: I didn't test it, I don't know how to put the modified section in to the image again. Also I wont put this modified bios without knowing if something goes wrong, is it possible to go back to the original bios with Bios flashback usb port.
I had no intention of offering you to flash your BIOS. All actions are should be related to work with the module.
Extract - patch - extract - check.
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#5
@Iarwa1N
Please refer to this sample for 250mhz ,extract it via IFR extractor.
https://katfile.com/sj7m854vdha2

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#6
@Iarwa1N
Everything is clear?
(03-10-2021, 07:46 AM)genius239 Wrote: https://katfile.com/sj7m854vdha2

Explanation
[Image: you-can-even-change-their-order.jpg]
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#7
This sample is only for prove 250mhz is a string.
[Image: 2qmq.png]

Max CPU Boost Clock Override and Max GPU Boost Clock Override use the same string 100mhz ,then i used text 250mhz to replace it.
And why i change max to fa ,because i wanna tell Iarwa1N there is a range for enter value , and use one digit is better than two digits .

This sample only for Iarwa1N and i would explain to him edit this bios is impracticable ,because there are many difficulties can't solve ,e.g how do you appear a external module in bios screen? or how do you re-flash mod in amd new platform?

@Maxinator500
You don't understand my intention.(而且我發現你仍然繼續給Iarwa1N錯誤的觀念。)

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#8
(03-10-2021, 09:23 AM)genius239 Wrote: @Maxinator500
You don't understand my intention.(而且我發現你仍然繼續給Iarwa1N錯誤的觀念。)
What you mean :/ ???
And I also think that it will not overcome the value of the variable C8. All I have to say in the previous posts is what he needed to understand that this was a dead end.

Sorry for any inconveniences genius.
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#9
genius239This sample is only for prove 250mhz is a string.


Max CPU Boost Clock Override and Max GPU Boost Clock Override use the same string 100mhz ,then i used text 250mhz to replace it.
And why i change max to fa ,because i wanna tell Iarwa1N there is a range for enter value , and use one digit is better than two digits .

This sample only for Iarwa1N and i would explain to him edit this bios is impracticable ,because there are many difficulties can't solve ,e.g how do you appear a external module in bios screen? or how do you re-flash mod in amd new platform?

@Maxinator500
You don't understand my intention.(而且我發現你仍然繼續給Iarwa1N錯誤的觀念。)

I get what you mean, the maximum value that I can use is FF = 255 or FA = 250. And I get that instead of adding new option, changing one option as in your example 100 to 250 is better. What I don't understand is what you mean by "how do you appear a external module in bios screen?". This module is already appearing in the bios and I can select all this values. "how do you re-flash mod in amd new platform?" I don't have the answer to this question, I am hoping you could show me a way.
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#10
(03-10-2021, 02:22 PM)Iarwa1N Wrote: I get what you mean, the maximum value that I can use is FF = 255 or FA = 250.
No. you can't.
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