Files with mbn extension could be in the past found as main firmware files for some older Sony Ericsson mobile phones.
There is one other file type using
the MBN file extension!
.mbn - Samsung Galaxy multi boot image
MBN file extension - Sony Ericsson mainware
What is mbn file? How to open mbn files?
File type specification:
File extension mdb is mainly used by Sony Ericsson mobile phones for one of its system files.
A typical .mbn file represents the phone's mainware files.
This format was probably used in the past and was replaced with modern variants.
This mbn 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.