Blackberry LogoPara los que tenemos un Blackberry, les recomiendo seguir estos pasos para instalar en sus teléfonos la última versión del sistema operativo lo que mejorará en una gran medida si aún tienen el sistema operativo con que les vino el teléfono.

La última versión disponible es la 4.5. Esta versión sirve para los modelos Curve, Pearl, serie 8800 y serie 8700.

Entre las principales novedades tenemos: (info copiada del sitio de Blackberry)

User Interface
Refreshed Look – Enjoy messages, address book entries and a calendar that make better use of colors and fonts. They’re also laid out to more closely match the programs you use on your computer.
Email
Improved Email Layout (Rich HTML Email) – View tables, images and fonts with formatting that looks better than ever.
Remote Search – Find emails that are stored on a BlackBerry® Enterprise Server.
Attachments and Files
Edit Microsoft® Word and Microsoft® PowerPoint® Files – Just download the attachments and start typing!
Copy, paste, change font formatting and more.
Download and Save – Grab a file on the Internet, and save it to your smartphone to view or edit later.
Want to edit Microsoft® Excel® files on your BlackBerry smartphone? Visit the DataViz® website to register with DataViz and download an update for Documents To Go that includes Sheet To Go.
SureType®
Save Time as You Type – Word completion for SureType keyboards will monitor what you type and present a list of options to scroll through so you don’t have to type the whole word.
Browser
Mobile Streaming – Access videos, music or even sports and news clips from websites with mobile streaming capabilities.
BlackBerry® Maps
Local Search – Enter a search term like ‘pizza’ to view a list of places to grab a slice within a 30-km radius.6
Voice Notes
Send a Voice Note – Instead of typing an email, record a Voice Note and send it as an email attachment or Multimedia Message (MMS).
Stay on Top of Your Tasks – Record your thoughts and play them back when they’re needed.
Music
Improved Music Management – See all your music files, or filter them by artist, album or genre. You can even create and edit playlists.
Musical Multitasking – Open the BlackBerry menu and select “Now Playing” to access the name and artist for the song you’re listening to – even when using another application.
Bluetooth Compatible (A2DP) – Use wireless Bluetooth® headphones or speakers to enjoy your music wherever you are.
Video
Video Recording – Take it all in with video camera capabilities.
Full Screen Player – Watch videos in full-screen mode or stay in command with the media controls mode.
Calendar
Free/Busy Lookup – View your colleagues’ calendars on your smartphone.

Pasos a seguir:
1) Actualiza a la última versión disponible del Blackberry Desktop Manager. Si no tienes la última, la puedes conseguir aquí.
2) En este enlace vas directo a la página de actualización. Recomiendo hacer este proceso usando IE y no Firefox, por alguna razón que desconozco, el proceso se dio usando IE y no cuando lo cargué en Firefox; no tengo idea en Opera o Chrome.
3) Sigue cada uno de los pasos: sacar un respaldo, esperar un buen rato y listo.
4) Tu Blackberry funciona mejor, por lo menos la mía sí lo hace.