File Extension Database

Open EFI File

An EFI file extension is a system file used by both Intel-based computing systems and Apple-based computing devices such as AppleTV.

The EFI file contains system-level data that runs between the operating system and the firmware.

Basically, an EFI file is an interface used to stage firmware updates, boot operating systems, and run pre-boot programs.

Using EFI files, systems can hand over the pre-boot process to a controlled environment.

EFI files are sometimes included with firmware updates and are loaded into the device's EFI system partition during the boot process.

In this case, the executable content of the EFI file safely executes the procedures necessary to update the device.

The EFI specification, originally developed by Intel, was evolved into the UEFI specification, which stands for "Unified Extensible Firmware Interface", thus becoming a standard.

The UEFI standard is maintained by the UEFI Forum.

Software for working with an EFI file

EFI files are developed and work with a Development Kit:

EFI Developer Kit

How Can I Open EFI File on Windows

We researched and learned that the best way to open EFI file is to find a EFI file in question in Windows OS File Explorer and double click on it to launch the corresponding application.
If a EFI file is not opened in an application and you instead get a "Windows can't open a file" error message you should try looking for an application which can open the file in question.
If you know the application which can open EFI file then run it and see if there is a File->Open main menu option in the application.
If you don't know the application which function as EFI file opener then try to search online for "EFI viewer", "application to open EFI file" or "open EFI file" queries in the search engine you like.
Install the application you found and check if it can open EFI file

How Can I Open EFI File on Mac OS

We recommend to find a EFI file in question in Mac OS Finder and double click on it to launch the corresponding application.
If a EFI file is not opened in a Mac OS application and you instead get a "There is no application set to open the file" error message you can click on "Search App Store" in the error dialog and Mac OS will show you applications compatible with EFI file.
If you know the Mac OS application which can work as EFI file opener you can choose the "Choose Application..." option in the error box to associate the file extension and open EFI file in it.
If you don't know the application which can open EFI file then try to search for "EFI viewer", "application to open EFI file" or "read EFI file" queries in the online search engine you like.
Install the application you found and check if it can read EFI file

How Can I Open EFI File on Android

If you downloaded a EFI file on Android device you can open it by following steps below:

In the Android apps list on your Android device find "My Files" or "File manager" app and tap to start it.
Tap on "Downloads" folder inside the app.
You should see your downloaded EFI file in that folder.
Tap on the file. If Android device supports opening the file you downloaded it will open in the corresponding app.
If file does not open you can look for the corresponding app that can open the file by searching Android App Store for the "EFI".
If you cannot open the file with the apps from Android App Store it is possible that the file could only be opened on desktop platforms such as Windows or Mac OS. Try searching for "EFI viewer", "EFI file reader" online and see if any desktop applications can open it.
It is also possible that the file you downloaded is outdated and is no longer supported.

How to Open EFI File on iPhone or iPad

To open EFI File on iOS device follow steps below:

We advies to open Files app on your iPhone or iPad device. You can find it by swiping down on the home screen and typing "Files" in the search bar.
Tap on the Downloads folder on the Files app home screen.
You will see all files that you recently downloaded. Tap on the EFI file to view it.
If you have the right app that can open it it will automatically launch and open your file.
If you don't have the app which can open it you need to serch Apple app store for "EFI". This way you can find apps which can open EFI files.
If this doesn't help it is possible that your file could be opened only by the desktop application. To find an app which can open it on desktop look for "EFI viewer" or "EFI file" online in your favorite search engine.

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