SCEWIN / AMISCE

AMISCE is a tool to modify BIOS NVRAM variables including options that are not visible through UEFI. As far as I know, it is exclusively shipped with MSI Center, which is the only official source. This repository was created to provide the SCEWIN binaries without requiring the installation of MSI bloatware, and to offer solutions for various error messages.

Disclaimer

This project is NOT owned, supported or endorsed by American Megatrends (AMI). Improper use could cause system instability. Use at your own risk.

Usage

1. Run the Export.bat script to export NVRAM setting values to nvram.txt

2. Depending on the type of variable, move the * to the desired option or change the value

3. Run the Import.bat script to write the configuration in nvram.txt to NVRAM

Solutions for various error messages

To determine the error message, a log-file.txt is generated while running either Export.bat or Import.bat, containing the output messages. The solutions for error messages can be found below.

The error codes can be divided into 3 categories:

1. Both
2. Export
3. Import

Both

LoadDeviceDriver returned false | Unable to load Driver

This error occurs:

1. When the drivers (originally named amifldrv64.sys and amigendrv64.sys) is not in the same folder where SCEWIN_64.exe is located
2. The command wasn't run with admin privileges

To fix this error:

1. Be sure that the folder contains both amifldrv64.sys and amigendrv64.sys
2. Be sure to run CMD with admin privileges

ERROR:57 - Parsing CMD Line Arguments | ERROR:57 - Opening NVRAM Script File

This error occurs:

1. If the command used is incorrect or doesn't exist

To fix this error:

1. Verify that the command is correct
2. When importing, make sure that the NVRAM script file exists and has the same name as specified in the command

Export

WARNING: HII data does not have setup questions information

This error occurs:

1. When HII resources aren't getting published, therefore there is no data for the program to work with

To fix this error:

1. If you have an ASUS motherboard (Z590+, B560+, H510+ | X670+, B650+, A620+) go here
2. I have not yet developed a solution for non-ASUS motherboards. It is currently being investigated

Retrieving HII Database | BIOS not compatible

This error occurs:

1. As the error message states, the BIOS may not be compatible. This can only happen if the BIOS is not from AMI therefore it won't work with any of AMI's tools

   • In order to check for BIOS manufacturer, paste the command below in CMD. If the vendor listed is "American Megatrends Inc." or "AMI" then you have an AMI BIOS

     systeminfo | findstr /I /C:BIOS

2. The SmiVariable is absent or outdated

   • Verify with UEFITool whether the module is absent or not

     • If it's absent, you can try inserting the module (obtain it from another BIOS, preferably from the same manufacturer)
     • If it's present, you can try updating the module (obtain it from another BIOS, preferably from the same manufacturer)

3. When using an outdated version of SCEWIN (e.g. version 5.03.1115) as newer motherboards only work with newer versions

Platform identification failed

Platform identification depends on the ACPI module label (for Aptio V).

This error occurs:

1. When the Aptio core version is outdated. AMISCE requires Aptio core version 5.008+ for UEFI 2.3

To fix this error:

1. You may override this error with /d option as shown below

   SCEWIN_64.exe /o /s nvram.txt /d

Import

Warning: Error in writing variable <variable> to NVRAM

This error occurs:

1. The variable to be updated is write-protected
2. PCI Device has been disabled in Device Manager

To fix this error:

1. Enable PCI Devices as follows:

   • Open Device Manager by typing devmgmt.msc in Win+R
   • Navigate to Other devices
   • Ensure that all PCI Devices are enabled

2. If you have an ASUS motherboard (Z790+, B760+, H770+ | X670+, B650+, A620+) go here

3. If you have an ASRock motherboard (Z590+, B560+, H510+ | X670+, B650+, A620+) go here

4. I have not yet developed a solution regarding variable write-protection for non-ASUS/ASRock motherboards. It is currently being investigated

System configuration not modified

This error occurs:

1. You imported the NVRAM script file back unchanged, therefore SCEWIN didn't have to modify anything

2. SCEWIN was unable to apply the changes you made

   • This is related to the previous error

Warning in line <xxxx> | Missing Current Setting "*"

This error occurs:

1. When there is an error in the specified line number (indicated by the xxxx)

To fix this error:

1. Comment out the setting or resolve the error manually

Warning: Unmatched question... prompt: <Setup question>, Token: <token>

These two errors are related.

This error occurs:

1. When there is no value specified for token in the NVRAM script file (no "*" next to either option). The line specified in the error message is the same as the line of the last option in the Setup question, whose token we just searched for.

   • See media/error-message-example.png

To fix this error:

1. Put a "*" next to the value that BIOS Default suggests

2. You can use the /q option to suppress all warning messages as shown below. This warning message will not appear when importing, along with other (perhaps) useful ones

   SCEWIN_64.exe /i /s nvram.txt /q

WARNING: Length of string for control <Setup Question> not updated as the value/defaults specified in the script file doesn't reach the minimum range (<value>)

This error occurs:

1. When the string given in the script is shorter than the minimum length specified in NVRAM external defaults (most likely). The usual cause for this is that the string has an initial empty value

Warning

Do NOT change the value of the string!

To fix this error:

1. You can use the /q option to suppress all warning messages. This warning message will not appear when importing, along with other (perhaps) useful ones

   SCEWIN_64.exe /i /s nvram.txt /q

2. Don't bother with it and leave it as is

ASUS

If you have an ASUS motherboard (Z590+, B560+, H510+ | X670+, B650+, A620+) follow the steps below.

1. Go to Setup > Tool section of your BIOS
2. Enable Publish HII Resources

This way HII data will be published to the driver in which, SCEWIN should work flawlessly.

Z790+, B760+, H770+ | X670+, B650+, A620+ Motherboards

This section is only required if you have a Z790+, B760+, H770+ | X670+, B650+, A620+ motherboard. These motherboards require an additional workaround as they password protect the various runtime variables.

After following the above-mentioned steps, you need to disable Password protection of Runtime Variables. In order to do so, follow the steps below.

1. Go to Setup > Advanced > UEFI Variables Protection section of your BIOS
2. Disable Password protection of Runtime Variables

ASRock

If you have an ASRock motherboard (Z590+, B560+, H510+ | X670+, B650+, A620+) follow the steps below. These motherboards require an additional workaround as they password protect the various runtime variables.

1. Go to Setup > Advanced > UEFI Variables Protection section of your BIOS
2. Disable Password protection of Runtime Variables

To access this setting, you need to mod your BIOS with UEFI Editor. ASRock's BIOS has 2 Advanced forms so you need to do a Menu swap in order to gain access to the setting.

Issues

Additional error messages or possible non-working solutions should be reported in the issue tracker.

Complete the appropriate issue template. Consider whether your problem is covered by an existing issue; if so, follow the discussion there. Avoid commenting on existing recurring issues, as such comments do not contribute to the discussion of the issue and may be treated as spam.