You can get the latest firmware for your Nokia 5300 right here!

Changes and Additions 

  • New icons in the call log menu
  • Switching from general to silent profile using the # key is now working
  • Onboard loudspeaker now sounds better – noticeable especially on rock songs
  • New music player icons
  • Music file tags in the music player are now displaying correctly
  • aacPlus playback is much clearer and louder

Update Links:

Online Update for unlocked phones(SIM-Free)

Before you start, make sure you have met these requirements:

To install and run Nokia Software Updater application:
PC with 1GHz or higher Pentium-compatible processor
At least 256 MB of RAM (memory)
Windows 2000 (SP4 or later) or Windows XP (SP1 or SP2) or Windows Vista
Administration rights on the PC while installing
High-speed internet connection

To connect your phone to a PC:

Fully charged, compatible Nokia phone
Compatible Nokia USB connection cable
Compatible USB port on your PC

Step 2/2: Back-up data

Personal data such as contacts, photos and messages stored in the phone memory will be deleted during phone software update. It is strongly recommended that you backup this data to your memory card before updating your phone software.

To backup to your memory card:
select Tools > Memory from the main menu
select Options > Backup phone mem.

To restore info to phone memory:
select Tools > Memory from the main menu
select Options > Restore from card

Now click on the link below to proceed with the update

http://europe.nokia.com/A4176089

I already updated mine so I recommend this rather than an offline update. But only choose this method if you have a stable broadband connection. My phone update took for only 20 mins.

Offline Update for unlocked phones(SIM-Free)

Recommended for those who have an unstable or slow internet connections.
Instructions:
Unpack this installation file to NSU “Documents and Settings” folder and NSU will update it.Please click on the link below to start the download.

http://rapidshare.com/files/68999283/5300_RM-146_DP20_5.00_sw-05.50_5.51.rar

DISCLAIMER: Do it at your own risk.