Essentio CM1525 The official BIOS does not seem to contain SLIC. Temporarily use AMITool to add back the lost SLIC. Suspected that the DMI was overwritten during the AFUDOS upgrade, resulting in the loss of the SLIC table.
@Aty I've taken a look at the stock BIOS images, and as you may already know, there's no built-in SLIC. It could be possible that ASUS used some kind of DMI tool (e.g. this one) to introduce the SLIC table on the fly, but we don't have much information on such pre-UEFI firmware images when it comes to permanent SLIC modding.
Tito, I am thinking of buying an 'Asus TUF Gaming X570-Plus', as this has a UEFI bios can it be modified for a SLIC 2.1 to be inserted? Edit: A great deal of the links are now dead, that were used for tools and BIOS info. I cannot even find a request thread for ASUS UEFI BIOS. I see that Serg008 has managed to modify an Asus TUF Gaming X570-WIFI bios in the past, so it seems it can be done. Cheers.
@HSGB Yes, the UEFI firmware of most consumer ASUS motherboards can be SLIC modded. And your request is in its correct place.
Thanks for confirming that, Tito. That has now made my mind up to purchase this particular board now. Serg008 seems to use 'Phoenixtool 2.73', so I shall now have to research that piece of software and the 'Mod method: Structure (New module)' he mentions. Edit: I shall take a closer look at the start of this thread as well. Edit II: Is it really this easy with Phoenixtool? https://forums.mydigitallife.net/threads/award-ami-bios-mod-requests.5863/page-2290#post-771336 Cheers.
Just posting this in case it helps some people: I used this method successfully with ASUS BIOSes - but unfortunately PhoenixTools fails on newer (larger?) BIOSes (e.g. Asus X299, B860, Z890, etc.) - that is very unfortunate. But one work-around I found: WARNING: Make sure the 1st/early BIOS does support your CPU model - especially on AMD platform. Otherwise upon downgrading you may not be able to boot! - Download the very 1st release BIOS for that mainboard - sometimes 1-3 years old - but using the guide here you can successfully add SLIC (new module). - Then use recovery (or downgrade if it works) to flash the *un-modded* 1st BIOS to the mainboard. - Then flash the modded SLIC BIOS - it is the same version, I know, this will just add the new module as rest of BIOS is the same - Now finally flash the latest BIOS - the SLIC will be retained. I have done this successfully on 3 mainboards (Asus X299, Asus B860M, Asus Z790M) where the latest/recent BIOS will fail modding, but downloading the 1-3 years old very 1st release BIOS does work. Sometimes you can just downgrade, sometimes you need to use recovery to go back to this 1st BIOS. I hope it helps.