I missed out this firmware update Nokia E71 which went out in December 2010. The change log includes
- Ovi Maps 3.03 Lite with free navigation
- New version of Music player
- New version of Ovi Store
- Office 2007 support
- Usability and performance improvements
The step by step guide is available here. link
Edit: 17 Nov 15
List of all updates is available here. Last version is v510.21.9