.NBU File

The nbu file extension is primarily used for backup files of Nokia phones created with Nokia PC suite 6.82 and later.

The typical nbu file contains complete backup of phone, including contacts, messages and other data located in internal memory of the phone as well as phone SD card.

This nbu file type entry was marked as obsolete and no longer supported file format.

This type of file is no longer actively used and is most likely obsolete. This is typically the case for system files in old operating systems, file types from long discontinued software, or previous versions of certain file types (like documents, projects etc.) that were replaced in higher versions of their original programs.

Files with nbu file extension can be usually found as old Nokia phone backups made using Nokia PC Suite 6.82 and higher.

How to open:

Nokia PC Suite can restore *.nbu files. There is also 3rd party program called Noki, that allows exploring the contents of *.nbu files.

How to convert:

Several Nokia utilities can export various data like contacts, messages etc. out of NBF backups. There is however no way how to actually convert these files to any other file.