WII File Extension

What is WII file?

In files with the extension .WII, there is an encoded optical disc image for the WII console. These are often game images that can be decoded using specific software, commonly known as a Wii unscrambler. This results in an ISO image of the WII disc that can be burned. This format was created to facilitate the making of backup copies of physical game media for the Nintendo WII console. It was used by the homebrew community and is not an official format recognized or supported by Nintendo.

Creation of .WII Files

Files with the .WII extension are created by raw ripping of data from an optical disc to a Nintendo WII console onto a computer disk. These are specifically encoded data that require decryption if they are to be used. The format was utilized for the first versions of games, but was later replaced by other standards. A simple console program called Wii Unscrambler, with the option of an additional GUI overlay for easier handling, is used for its decryption.

Usage of WII Files

Officially, the format that allows for the creation of an ISO image of WII console games was intended for their archiving, to protect against physical damage to the disks. However, it has become a means of illegally sharing games. It also allows for the game to be loaded and gameplay to be conducted through a compatible version of a WII console emulator on a PC after decoding.

Programs which support WII file extension

Programs that can handle WII files are as follows. Files with WII suffix can be copied to any mobile device or system platform, but it may not be possible to open them properly on target system.

Updated: 03/08/2024

How to open file with WII extension?

There can be multiple causes why you have problems with opening WII files on given system. Fortunately, most common problems with WII files can be solved without in-depth IT knowledge, and most importantly, in a matter of minutes. The following is a list of guidelines that will help you identify and solve file-related problems.

Step 1. Get the Wii Unscrambler

Problems with opening and working with WII files are most probably having to do with no proper software compatible with WII files being present on your machine. This one is an easy one. Select Wii Unscrambler or one of the recommended programs (for example, Rawdump) and download it from appropriate source and install on your system. Above you will find a complete listing of programs that support WII files, classified according to system platforms for which they are available. If you want to download Wii Unscrambler installer in the most secured manner, we suggest you visit website and download from their official repositories.

Step 2. Check the version of Wii Unscrambler and update if needed

If the problems with opening WII files still occur even after installing Wii Unscrambler, it is possible that you have an outdated version of the software. Check the developer’s website whether a newer version of Wii Unscrambler is available. Software developers may implement support for more modern file formats in updated versions of their products. If you have an older version of Wii Unscrambler installed, it may not support WII format. The most recent version of Wii Unscrambler is backward compatible and can handle file formats supported by older versions of the software.

Step 3. Associate Scrambled Wii Disc Image files with Wii Unscrambler

If you have the latest version of Wii Unscrambler installed and the problem persists, select it as the default program to be used to manage WII on your device. The method is quite simple and varies little across operating systems.

The procedure to change the default program in Windows

• Clicking the WII with right mouse button will bring a menu from which you should select the Open with option
• Next, select the Choose another app option and then using More apps open the list of available applications
• The last step is to select Look for another app on this PC option supply the directory path to the folder where Wii Unscrambler is installed. Now all that is left is to confirm your choice by selecting Always use this app to open WII files and clicking OK.

The procedure to change the default program in Mac OS

• From the drop-down menu, accessed by clicking the file with WII extension, select Information
• Open the Open with section by clicking its name
• Select Wii Unscrambler and click Change for all...
• If you followed the previous steps a message should appear: This change will be applied to all files with WII extension. Next, click the Continue button to finalize the process.

Step 4. Check the WII for errors

You closely followed the steps listed in points 1-3, but the problem is still present? You should check whether the file is a proper WII file. It is probable that the file is corrupted and thus cannot be accessed.

1. Verify that the WII in question is not infected with a computer virus

If the WII is indeed infected, it is possible that the malware is blocking it from opening. Immediately scan the file using an antivirus tool or scan the whole system to ensure the whole system is safe. If the WII file is indeed infected follow the instructions below.

2. Check whether the file is corrupted or damaged

If you obtained the problematic WII file from a third party, ask them to supply you with another copy. The file might have been copied erroneously and the data lost integrity, which precludes from accessing the file. When downloading the file with WII extension from the internet an error may occurred resulting in incomplete file. Try downloading the file again.

3. Ensure that you have appropriate access rights

Sometimes in order to access files user need to have administrative privileges. Log out of your current account and log in to an account with sufficient access privileges. Then open the Scrambled Wii Disc Image file.

4. Verify that your device fulfills the requirements to be able to open Wii Unscrambler

The operating systems may note enough free resources to run the application that support WII files. Close all running programs and try opening the WII file.

5. Verify that your operating system and drivers are up to date

Up-to-date system and drivers not only makes your computer more secure, but also may solve problems with Scrambled Wii Disc Image file. It is possible that one of the available system or driver updates may solve the problems with WII files affecting older versions of given software.

Do you want to help?

If you have additional information about the WII file, we will be grateful if you share it with our users. To do this, use the form here and send us your information on WII file.