>> 89U file

89U file format description

Many people share .89u files without attaching instructions on how to use it. Yet it isn’t evident for everyone which program a .89u file can be edited, converted or printed with. On this page, we try to provide assistance for handling .89u files.

1 filename extension(s) found in our database.

.89u - TI-89 Calculator OS Update Data

The 89U data files are related to TI Navigator. 89U file is a TI-89 Calculator OS Update Data. The TI-89 and the TI-89 Titanium are graphing calculators developed by Texas Instruments. They are differentiated from most other TI graphing calculators by their computer algebra system, which allows symbolic manipulation of algebraic expressions.

TI Navigator
Data files
- / -
TI-89 Calculator OS Update Data related extensions:
WinBackup Archive
TI-83/84 Plus OS Update Data
iFaith SHSH Data
TI-89 Calculator Expression Data
Go Game Data
FidoNet Batched Newsgroup Data

Naturally, other applications may also use the .89u file extension. Even harmful programs can create .89u files. Be especially cautious with .89u files coming from an unknown source!

Can't open a .89u file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows can't open this file:


To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select one from a list of programs that are installed on your computer.

To avoid this error, you need to set the file association correctly.

The .89u file extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

89i, 89k, 89y

Is it possible that the filename extension is misspelled?

Similar file extensions in our database:

TI-89 Bitmap
TI-89 Application
TI-89 Calculator Equation Data

Operating systems currently supports the following operating systems:

Windows XP/Vista, Windows 7/8, Windows 10, CentOS, Debian GNU/Linux, Ubuntu Linux, FreeBSD, Mac OS X, iOS, Android

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