upgrades

Unfortunately the U-Mix Control Pro I purchased , came with Cross DJ 1.5,Can you provide me with step by step instructions on updating to Cross DJ 1.7.
Do I need to go through all of the updates betweem 1.51 and 1.7 or can I skip right to 1.7 and upload 1.7 to get the latest version.
Is there anything I need to to do allow for proper upgrading to occue without any errors?
Wendy
Do I need to go through all of the updates betweem 1.51 and 1.7 or can I skip right to 1.7 and upload 1.7 to get the latest version.
Is there anything I need to to do allow for proper upgrading to occue without any errors?
Wendy