Any version has all features and fixes of previous updates so it doesn't hurt to skip versions ...

There are a few preparations that are advised before updating ...

It's a good idea to export the waypoints and verify in HBPC that you have exported a hard copy of your waypoint library ...

Then ...:

*Remove any map cards just in case ...
*Power on the unit by itself (no other Ethernet devices powered on) ...
*Restore Defaults under the Setup tab ...
*Insert the SD card that contains the update ...
*Select Yes from the green popup to confirm you want to update ...
*Select No from the red popup to confirm you do not want to Abort the update ...
*Wait for the unit to update and restart itself ...
*Press Exit when it boots to the Navigation disclaimer screen ...
*Remove SD card
*Restore Defaults under the Setup tab once again ...

Rickie