but my gpu is A400 ，Same core as RTX 3050, belonging to the RTX 3000 series.
Is this BIOS applicable?
Thank you, I understand now. I just used the file “X99-E-WS-USB31-SUS-4001-NvStrap4. cap” and added the component “ReBarDex. ffs” inside it, successfully opening the Resizeable Bar.
Thank you. I don’t know how to thank you, this question has been bothering me for a week.
Hi, first of all thanks to all people here sharing their kwoledge, it turns in a very helpfull experience.
Now proceed with the matter:
My system
CPU Ryzen 5 2600
MB Gigabyte B450M-K rev2.0
Bios FDd
GPU Intel Arc A380
GPUz Resizable BAR status window informs all is Ok (YES) but the support from MB (NO)
The BIOS seems have ReBAR support available but it is not possible check to AUTO in the UEFI because the option is not appearing, i.e. 4G decoded is appearing and it is checked YES.
I have tried to use the guide
Confirming the existence for the ReBAR option in the BIOS, even using the Grub tool explained in the guide, I have forced the parameter ReBAR to AUTO without success.
I think the problem is the CPU type and, could be, the bios is not only looking for the parameter in AUTO but also something more still blocking.
I have tried also to modify the BIOS including the ReBAR module, but the bios update tool rejected the MOD indicating something like INVALID BIOS.
Question: In this type of BIOS where the ReBAR support seems to be included would be necessary add the ReBAR module? or could be better try to use the built-in module, overriding the “protections”?
thx
Hello @Gusarapinho
The board does indeed have ReBAR support built in, however the CPU isn’t on the list.
3000 series and above only.
You should be able to force it using the mod.
As for flashing the modified file, you might find info here Flashing Gigabyte while avoiding "Invalid BIOS image"
If you get stuck, send me a PM
best regards,
-68k
Hello, everyone! I had some difficulty trying to enable hidden 4G decoding on the ASRock z97 Pro4 by following the [Enabling hidden 4G Decoding] , i get errors on compiling DSDT and i don’t know how to fix them! 
(Enabling hidden 4G decoding · xCuri0/ReBarUEFI Wiki · GitHub) guide.
https://download.asrock.com/BIOS/1150/Z97%20Pro4(2.50)ROM.zip thank you !
Hello guys, I have been trying this guide from xCuri0 to mod BIOS for my Lenovo M720s.
Problem when I convert bin file to .txt. Inside the txt file there is nothing that mentions “4G Decod” or “Above 4G”. How come uefi tool finds text within bios but then when I extract and convert that from powershell its no where to be found?
Only hotplug and pci system
Greetings friends, modders and computer enthusiasts.
I need to activate the 4G bar resizable on my old Z77 Extrem6/TB4 motherboard… I have it equipped with an Intel i7 3770K and 32gb of ram along with an RX580 8gb 2048sp. The thing is that I don’t know how to do it, I’ve downloaded all the programs but I have no idea how to do any of this. I’ve been asking for help on several occasions but the more I read the more my head gets tangled and the less I understand, and the truth is I don’t feel capable enough to do this since I don’t have anyone who can explain this to me in detail to know if I’m doing well or not, and I saw a guide but I don’t know if this is true for all motherboards. I’m going to leave the BIOS that I’m currently using on my PC already modified to boot via PCIe with an NVMe M.2 adapter in case someone can help me and make this modification to the BIOS that I leave below.
TB4.rar (4.5 MB)
Hi @Greenapp did you manage to flash the Z97AU31.zip rebar successfully, and have it work on your Z97-a mobo?
re: ASUS Z97-A rebar mod
@mhi00002000
Hi, did you manage to flash a bios with rebar that works on your mobo? I’m looking for a version of the rebar modded Z97-A that works for rebar.
Hi, If anyone has managed this or knows anyone who has achieved this successfully on a ASRock B450 Pro4 Board please get back to me via reply here or DM.
Thanks
@Electron-PSO
As you say, I post my request here again.
Hi, I´m 55 years old, my english is very bad. I don´t have the money for a new pc, so I bought a Intel Arc B580. But my mainboard bios
doesn´t have the “resizeable bar funktion” it´s an Asus Maximus Code IX with a intel z270 chipset. The last bios is from 2021 Version 1501.
Can anyone help me to creat a modded bios with resizeable bar funktion ?
Hi. I checked around and there are only two posts that mention a similar motherboard and none of them is of any help. I have a i5 7600 and an RX 580 8GB. I tried to follow this guide
in order to mod my bios (F26a) so it’d allow ReBar to work. I failed because my programming knowledge is very limited. I thought I’d seek help here. I am terribly sorry for the inconvenience.
TL;DR: does anyone have a modded bios that has Rebar enabled?
can someone help me add resizable bar bios z87 mod plss
Need help with asus h170 pro gaming bios mod for resizable bar i have tried making one myself but keep failing tried multiple times just keep failing haven’t a clue where to start with this stuff.
Is possible to add resizebar to h170 pro gaming?
When i try flash it says. Selected file is not a proper BIOS
