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# Kindle DX Software Updates

The latest software version for Kindle DX is 2.5.8. This update automatically downloads and installs on your Kindle DX when connected wirelessly; however, you can also manually download the software and transfer the update to your device via USB cable.

The software update includes general improvements and the following new features:

- Collections: Organize your books, audiobooks, and personal documents into one or more collections.
- Pan and zoom in PDFs: Zoom into PDFs and pan around to easily view small print and detailed tables or graphics.
- Password Protection: Protect your Kindle with a password when you're not using it.
- More Font Sizes & Improved Clarity: Enjoy two new larger font sizes and sharper fonts for an even more comfortable reading experience.
- Share what you're reading to Facebook and Twitter: Share meaningful book passages with friends on Facebook and Twitter directly from your Kindle.
- Popular Highlights: See what the Kindle community thinks are the most interesting passages in the books you're reading.

## Download Kindle DX Software Updates

Select one of the links below to download the software update file directly to your computer. To find the serial number for your device, press the Menu button, select Settings, and then select Device Info.

Important: If you copy multiple software update files to your device at the same time, the software update will not be successful. Please fully install one file, and then download and install the next file, as appropriate.

If you have... | Do this...
--- | ---
Kindle DX (U.S. Wireless) Your serial number starts with "B004" | Download and install Software Update 2.5.8. After your device has fully updated to version 2.5.8, then download and install the Kindle Services Update. Note: If you have a software version prior to 2.3, download Software Update 2.3 first, and then complete the steps above to update to software version 2.5.8 with the Kindle Services Update.
Kindle DX (Free 3G) Your serial number starts with "B005" | Download and install Software Update 2.5.8. After your device has fully updated to version 2.5.8, then download and install the Kindle Services Update.
Kindle DX (Free 3G) Graphite Your serial number starts with "B009" | Download and install Software Update 2.5.8. After your device has fully updated to version 2.5.8, then download the Kindle Services Update.

In accordance with certain free and open source software licenses, Amazon is pleased to offer an archive file of source code for this software update:

- Download 2.5.8 Source Code
- Download 2.3 Source Code

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