@Lost_N_BIOS The test bioses I mentioned was made by @plutomaniac and he is the first one modded this bios. The BIOS dump I uploaded yesterday is done by CH341A, not sure the original MAC ID embedded or not. As I said before, I cannot boot into DOS with this motherboard. I tried to make FreeDOS bootable flashdrive with Rufus but cannot boot, just blank screen. I am not sure how to boot into DOS or 32-bit UEFI with this mb, the adfuwin.exe requires 32-bit system.

---------------

XC-730 BIOS linked below. @Lost_N_BIOS
MAC ID attached in description.
http://s000.tinyupload.com/index.php?fil...623534125277412

Thanks for info, I didn't look back and notice he made you some BIOS to test, sorry I missed that earlier!

I know that was dump you sent yesterday, but since MAC ID is current all zero's, then the original one is not in there. That's why I need other same, or hopefully similar dump and correct MAC, then I can fix in your current BIOS.
You can boot DOS, you just have not done it correctly yet, for this system. Blank screen sounds odd, maybe you have UEFI Mode / Secure Boot enabled or OS Type Set to Win8-10 etc? If yes, disable, then you can boot to DOS
Or, try not using Rufus and freeDOS, try win98 SE instead (With or without Rufus?) Here is how I boot to DOS, never any issues on anything - Follow steps 1-4 to create bootable USB
<Request> Flagship X470 Gaming 7 Wifi Motherboard BIOS Fix

Also, be sure to use small cheap drive, like 128MB-2GB

Thanks for BIOS and MAC, I will get into this tonight for you. * Edit - checked, no, this MAC is not in this BIOS that I could find, forwards or backwards, not even partial.
So, MAC must be stored on chip in these systems

Can you help me mod my original BIOS to update the CPU microcode, LAN UEFI driver, etc using UEFITOOLS and xc-830 bios I mentioned before? The MAC ID issue seems not a BIOS issue. So we can skip that part.

Tried you app. Cannot using on Win10. Tried on Windows XP. Still cannot boot.

@wizbee - you need to be specific, I don't know what "App" you are talking about. If you mean the Bootable DOS creation tools, they work fine on Win10 and WinXP too, I've used them on both systems to make USB Bootable drives.

If you cannot boot the board, you need to program back in your original dump. Then once you are running again we can discuss modification of the BIOS.
If you can't boot from your original dump, then there is either some issue with it (bad dump), or some issue with you writing back BIOS to chip. If it's the later we need to find reason and change the cause, so you can get it running again.
Programming in edited BIOS isn't going to make it magically boot if programming in your original BIOS isn't working either.

I am using original BIOS and it runs OK. A little high CPU usage at startup. I think the mod @plutomaniac made works OK except the VGA output issue and trimmed BIOS menu issue. I want to mod the original BIOS to include some fix that the latest BIOS of XC-830 included. I think it would be great if you can help me mod my original BIOS to include the fix. You can check the bioses plutomaniac uploaded earlier in this thread. What I mean yesterday is the original BIOS runs fine, I think Acer has blocked DOS boot, at least in this board. Tried to change the CSM option, it only brings up legacy boot mass storage but no siganl shows after choose the mass storage boot as first boot. I think the MAC ID issue is not BIOS related. So we should skip this part and focus on the BIOS mod agenda to include the CPU microcode fix at least. Can you help me mod my bios dump and make a new bios based on the original bios that include CPU microcode update from XC-830 BIOS or the BIOS plutomaniac uploaded earlier? Since the original BIOS is outdated.

Could anyone shed some light on the BIOS mod of this BIOS? How to update the CPU microcode, Realtek UND driver, NVME driver etc?

Please explain VGA Output issue (Never mind, I see now on page one, I will check and update vBIOS if possible), and what is trimmed BIOS Menu? I'm sure plutomaniac didn't trim or hide any BIOS options when he made a BIOS for you.
Yes, I can help you do mods, but you need to be specific on what you want done ("some fix" from other BIOS you want in this one, tells me nothing)

DOS boot is not blocked, you may need to disable secure boot and move USB device to first in the boot order list if there is no boot menu hotkey at startup
There is a test setting "PCIE VGA Workaround" set to disabled, this is for DOS testing, so this system can for sure boot to DOS as it was part of the intended ES testing scenario
Help text for this say to enable if your PCIE card cannot boot to DOS. So, this may be something you need to test enabled, if you are using PCIE graphics not onboard from CPU

MAC ID may not be in BIOS, some board store it in chip, that's why I uploaded that huge package with tools for your specific chip.

Please link me to the exact BIOS you want modified, I will update all CPU microcodes, Realtek PXE, and do NVME mod if it applies.

* Edit - On VGA can you test your VGA ports with a DMM? Maybe this port is disabled, no traces going to it, resistors removed etc, due to this is ES system it may have been setup/configured to only function with HDMI
There is no vBIOS, only EFI GOP GeminiLake - 13.0.1010 - Never mind, found some, if you're reading this now, please wait, will update with full info on this once I'm done - Never mind that, these vBIOS are not vBIOS, but the small 5-6KB VBT files
So, no vBIOS

Thanks for replying. My original BIOS dump by CH341A programmer was uploaded earlier and it is unmoddified, pls check the top part of this thread. What I need is a BIOS modded based on my original BIOS. By comparing it to the BIOS of XC-830, and using the UEFITOOL of this forum, to updated the CPU microcode, NVME module, Realtek LAN module, etc. XC-830 is similar to my mb, except mine has two HDMI ports, one for HDM-IN, and one for HDMI-OUT. Acer claim some fix applied to the newer BIOS(CPU microcode, system hung up and black screen, Realtek UEFI LAN driver), you can check below.
https://www.acer.com/ac/en/US/content/su...campaign=101248
It would be better, if you can also mod a BIOS based on XC-830. The BIOSes made by plutomaniac based on XC-830 have VGA output issue with onboad VGA port, and the BIOS menu is lot trimed comparing to the original BIOS. I think the HDMI-IN is also disabled with these mod BIOSes. It would be better unblock the BIOS menu.
Onboard VGA output works with original BIOS but not mod BIOSes made by plutomaniac. Yes, you are right about the PCIE VGA disabled in BIOS. Since I am not using a PCIE graphic card with this mb. Do you mean I should use a PCIE graphic card and plug the VGA cable to the PCIE graphic card and try to boot DOS again? I will try this later. If I can boot into DOS environment, I think the MAC ID issued can be solved. B.t.w., I think the priority should be the BIOS mod to solve the outdated BIOS.

That BIOS you mention/linked is four BIOS older than current latest there. Anyway, it's irrelevant to anything we need to know, old news of them fixing their broken XC-830 BIOS, nothing to do with your BIOS
Again, plutomanic would not have "trimmed" or touched BIOS menu settings in any way. What you are seeing is either one of these things, BIOS for XC-830 has less options than your board, or your ES BIOS has a lot more options visible than normal retail BIOS (This is normal, usual etc)

Since VGA works with original BIOS but not XC-830, this may mean you can't use XC-830 BIOS as base, or I need to move over the GOP/vBIOS modules from the original ES BIOS.
Reading back at your test report comments, you mention VGA Works, but gives you an error on screen about secure boot.
To me, this shows VGA is working (ie powered on, displayed info on screen),but you have secure boot enabled and there is no EFI vBIOS module for whatever is feeding the output to VGA vs there must be a EFI module for the output to HDMI
This would be common error in any "Secure Boot" enabled situation where you tried to use/load a non-secure bootable item (ie no UEFI/EFI module/vBIOS etc) Solution there is don't use secure boot, problem solved, VGA works.

PCIE VGA Workaround is disabled by default, this only needs enabled if you are connected to the PCIE card and can't boot to DOS.

I will make BIOS using plutomaniac BIOS as base, mainly R01B0_MOD.bin since this is working same as the other
Do NVME mod if applies (if not already NVME capable) << never mind, BIOS is already NVME compatible
Update LAN PXE Boot module + add legacy one missing from retail (it only contains EFI x2)
Swap back in XC-730 GOP/vBIOS << This may not be possible, since your BIOS does not contain any vBIOS (While the 830 does), well your 730 BIOS does have vBIOS module it's there, but cut out (only 1% of module is there) so you may have to either do not use VGA or do not use Secure Boot. I can't swap in 830 or you get VGA and HDMI 1/2 issue again.
Put back 706A1 (only so both 706A1+706A0 will be there, for completeness, in case anyone else us BIOS later, or you switch CPU etc)
Unlock all BIOS menus

Before I can do the menu unlock, I need you to take images of all the currently visible BIOS pages and all submenus in each section too, with BIOS >> R01B0_MOD.bin
Please set your camera to take small images if possible, then once done, put all in a 7zip archive with max compression set and upload for me.

Also, please wait, I want to discuss something GOP related with plutomaniac

plutomaniac I see this always, and never know what it's about. There is normal sized GOP module, and then always some BIOS have a 5-6 KB GOP module too, what is this? Normal BIOS have this 5-6KB one + one regular GOP module + vBIOS module
In these BIOS, each 730/830 BIOS has 2 of these that are 6KB, duplicated in different volumes, each byte matches it's counterpart in other volume but #1 doesn't match #2 for each when compared from the different BIOS while they are the same version/build date etc.
So, since this 730 does not have a valid complete vBIOS (See 06767E64-19BF-459F-8564-5F25D4896FB0 in SPI.bin, compare w/ retail BIOS), I'm wondering how the display works at all with no vBIOS.
I assume maybe these 5-6KB GOP module is what's controlling his HDMI output settings since no vBIOS, or maybe the large main GOP module, why one works and the other doesn't, this is why I wonder about these.
We can't manipulate the GOP module like vBIOS can we, no tools? I know I can swap these around, so that will be tested eventually, would be nice to be able to look at settings in these like we can with vBIOS and BMP tool.

As I mentioned earlier, VGA is not working with the modded BIOSes plutomaniac uploaded. What I mean is secure boot warnnings will shows up using the two BIOSes plutomaniac uploaded earlier, btw the warnings only shows when using the HDMI-OUT, with VGA only black screen. Each of the modded BIOSes boots with HDMI-OUT but not VGA. So you misunderstood my comments above. And yes the B0 version of XC-830 BIOS I linked earlier is the latest release of Acer. The trimmed menu is of XC-830 BIOS is not a issue if VGA HDMI-IN HDMI-OUT all work out of box.

The BIOS menu of XC-830 mods shows below. I uploaded earlier to Postimg site. The only missing option at the time I took snapshots is onboard audio, since then the ALC662-VD is broken. Now the audio is working and onboard audio option shows up as expected.
https://postimg.cc/gallery/1fjviwf1k/
I will take snapshots of the original BIOS menu and upload soon. I will also take snapshots of the XC-830 MOD BIOS menu as soon as I got home.

@Lost_N_BIOS The snapshots of original BIOS menu linked below. Including sub-menus.
For online viewing:
https://postimg.cc/gallery/31fgdubsk/fa10020f/

For offline viewing zip file
http://s000.tinyupload.com/index.php?fil...244639256374931

@wizbee - thanks for clarifying about the VGA/Warnings, I read your comments wrong then, sorry about that. I thought you got the warning with VGA, but VGA worked aside from that.
The warning may be normal with secure boot, if you have some item that can't be securely booted, this may have been disabled or not setup etc on the ES BIOS. What exactly is the warning?
This VGA not working is due to the configuration of the vBIOS files, which I'm trying to figure out now. It would be much easier for me, if the 730 actually had a vBIOS module!

You said BIOS menu is trimmed on CX-830 BIOS plutomaniac made for you, I assume vs the ES 730 BIOS. Now you say only one setting was missing, which is it, is the menu trimmed/less than 730 one or not?
Usually lots of settings may be hidden from user, I assumed this is what you meant, ES 730 BIOS maybe showed tons of settings and submenus etc, but then 830 retail all this was hidden. Please explain in detail what you really meant about this then, I'm lost.
I see your images now, can you please zip all those up, and be sure to separate the 730 and 830 so I know which is which. In the end, you want full unlocked 830 BIOS menu anyway, correct?

plutomaniac Thanks for your comments on that. When I normally look at other BIOS, update vBIOS etc. I see GOP, regular vBIOS 64-120KB usually (which has the $VBT signature), and then this smaller 5-6KB file too which also has $VBT signature (most BIOS include both - normal vBIOS + small 5KB file usually in other BIOS)
This BIOS for the 730 ES does not have a vBIOS, only GOP and that small 5-6KB file. I didn't check to try and open that in BMP, I assumed only normal vBIOS could be opened in that tool, I know GOP can't.
Hopefully SoniX will drop some comments when he has some free time. Meanwhile, I will see if those 5-6KB will open in BMP, I assume not, since I'd have to pick BSF script based on vBIOS version, which there is no vBIOS here

* Edit - Hey! It works, thanks for mentioning this plutomaniac, maybe I can sort this out after all, with the 5-6KB VBT files.
I'm still confused why the ES doesn't have the large 64KB vBIOS while the retail does. I'll have to see if we can sort the issues with the small files first and get that all working properly, then later test insertion of the large vBIOS from retail

The BIOS menu of XC-830 is the same with XC-730. So it is purposely designed by Acer. So we should use the original BIOS as base to mod. B.t.w. I have already uploaded the original BIOS menu snapshots. It is zipped and uploaded to your preferred file sharing site. Just check the earlier post.
Original BIOS menu snapshots in zip file
http://s000.tinyupload.com/index.php?fil...244639256374931

But you said menu was "Trimmed", if they are the same, then what did you mean by that? I checked a few images from your galleries above from each system previously, the BIOS did not look the same at all to me 730 vs 830, totally different menus.
So, please make up your mind, you contradict yourself with each new post. I will unlock all menus anyway, in that manner both BIOS would be the same, but by default both BIOS do not look the same in the few images I looked at in your galleries.
Yes, I knew you uploaded one set in zip already at post 26 ( I assume.think 730 BOIS), I was asking for both, and now you have uploaded the other, thanks.

Never mind, I see this new link at post 28 is same link you gave for both zips at post 26.
Please put both BIOS images sets into a single zip, separated in folders one for 730 and one for 830, then all this confusion will be over.

I never uploaded snapshots of XC-730 BIOS menu. And the early July upload is pure XC-830 mod BIOS menu. The snapshots uploaded earlier today is pure original BIOS menu.
P.S.
Original BIOS means J5005ES.
XC-830 means J5005 of retail.
XC-730 meabs J4205 of retail.