Please note that as of October 24, 2014, the Nokia Developer Wiki will no longer be accepting user contributions, including new entries, edits and comments, as we begin transitioning to our new home, in the Windows Phone Development Wiki. We plan to move over the majority of the existing entries over the next few weeks. Thanks for all your past and future contributions.
What is Firmware
Firmware is software that is embedded in a hardware device. It is often provided on flash ROMs or as a binary image file that can be uploaded onto existing hardware by a user
What is the use of Firmware
As manufacturers continue to develop their products they rewrite the firmware. They might write in bug fixes and performance improvements.
How to upgrade the Firmware
Firmware is available for download from manufacturers' web sites and from support sites.