How to change battery.

How to change battery ?If you just change the battery like that, the data in ECU and NAVI will be reset to default, all personal setting lost.

This is how i always do to avoid that,
-Start the engine with the old battery using jumper
-Engine running, dont unplug anything yet
-Using extended cabels make a parallel connection from the engine + and - to the new battery
-Now the engine running on both old and new battery
-Since the engine have a parallel connection to the new battery, you can unplug the old baterry
-Put the new battery on place
-Connect to the engine Connector
-Release the parallel cables

The this is, make the engine doesnt loose connection with new battery both + an -, loose one of them, you are gone.