First time doing this not yet had the chance to issue the firmware update, so I will update this again to add anything extra if needed.
Juniper do make it much easier to update their firmware than Cisco.
This is presuming the SRX210 is setup already and can be remotely accessed. (I will add later on a from out of the box firmware update)
##WinSCP great tool for connect via SSH to linux and other deivce such a the SRX210.
WinSCP to SRX 210
Loging to SRX 210 as ROOT
##Copy firmware latest recommend fimrware for SRX to the following folder…
##Check firmware has been added by running the following command…
file list /var/tmp/
##Once completed and ready to install run the following command
request system software add /var/tmp/junos-srxsme-11.4R5.5-domestic.tgz
##Once the message appears requesting to restart issue the following command
request system reboot