NBU File Extension
Nokia Phone Backup Format
- File Type nbu
- Developer Nokia
- Popularity
- Application Nokia Suite
- Category Backup Files, Smartphone Files
- Format Binary
What is a NBU file?
Files with the NBU extension are associated with Nokia Phone Backup Format and are categorized as Backup Files and Smartphone Files, making up 464 files.
The Nokia Phone Backup Format (NBU), created by Nokia, is one of file format they developed, and they also built 7 programs to support them.
NBU files are compatible with various operating systems, including Windows. When working with NBU files, you can rely on 4 programs, including Nokia Suite, Noki and Nokia NbuExplorer.
Programs that support NBU files
How to open a NBU file?
If you can’t open a NBU file, it is usually because the necessary software is missing. To resolve the issue, select the right program from the list for your operating system. Then go to the official website of the developer, download the software, and install it.
Nokia Suite, Noki and Nokia NbuExplorer are recognized as the most popular software solutions for dealing with NBU files. To set up the newest version of Nokia Suite on your device, simply go to the official Nokia website. There you can download the edition compatible with every operating system.
After completing the installation, NBU files should be recognized by the system and linked to Nokia Suite.
Set Nokia Suite as your default NBU viewer
Setting a default program by file type in Windows
- Right-click on your NBU file, then choose the "Open with" option and select "Choose another application" from the available options;
- From the list of applications in the pop-up window, find and select Nokia Suite as your desired application;
- Check the "Always use this app" checkbox, and then click "OK" to set your chosen app as the default for opening NBU files.
Set default app to open files on Mac
- Right-click or Control + left-click on the desired NBU file to open a menu of available actions;
- Select "Open in application" and click "Other";
- In the lower section of the window, you’ll find the "Enable" menu, with "Recommended Programs" pre-selected as the default option;
- Select "All Programs" in this menu, and then search for Nokia Suite. Check the box next to "Always open in app" to make sure it’s the default option.
How to edit a NBU file?
Editing NBU files requires installing professional software that lets you open and edit backup files. Online editors have more limitations compared to dedicated Nokia Phone Backup Format programs.
List of Top NBU editors 2026
Taking the above factors into account, we have selected a list of NBU editors currently available.
| NBU Editor Software | Developer | Platforms | Overall Rating |
|---|---|---|---|
| Nokia Suite | Nokia | Windows | 4.1 out of 5 (39 reviews) |
Convert to and from NBU
If you struggle with a NBU file, consider converting it to alternative formats such as MP3, PDF, CSV, XLS, VCF or other similar file types.
Converting a NBU file may not fully retain all functionality, but it is generally possible to return it to the original format.
Convert NBU to other file formats
Converting Files to NBU Format
Solving Common NBU File Challenges
While NBU files can sometimes present difficulties, most problems can be resolved quickly with minor software modifications. Check the tips below to help solve them.
What are the steps to repair a damaged NBU file?
Use Nokia Suite to open the damaged NBU file and from the menu, choose "Repair" function to start the repair process. Wait for the recovery process to finish, as it will automatically repair damaged backup files.
What are the warning signs that my NBU file may be corrupted?
Corrupted NBU backup files may show the following signs:
- Error messages appear during the course of working with the file;
- Editing the archive in Nokia Suite is accompanied by slow performance or delays;
- The file shows errors when trying to open it or does not open completely;
- Unexpected expansion of the total size of the NBU file;
- Opening or processing the file in Nokia Suite or other programs causes instability or crashes in the program;
What are the reasons behind Nokia Suite crash?
Nokia Suite crashes can be caused by outdated software. Keep your Nokia products up to date by installing the latest updates.
A simple restart of your computer can often fix many common problems, which is why it is the recommended first step before making any adjustments to your software settings.