Firmware version

How can I determine the Present firmware version? Also, does Firmware Update format my sansa drive removing all songs on it?  There needs to be more FAQ posted as package startup information sheet does not even address the fact that the unit should be Charged prior to usage. Other than the user guide and the Converter software it would leave a young novice in the dark on how best to initiate installation.

To share with others who may have the same ?. I located that answer  with the following onscreen options: Settings then system information. I am somewhat reluctant based on others problems with firmware to upgrade until all glitches have been worked out as i see there is a reversion to a former version. If it ain’t broke , don’t fix it…prevails.