Update VCenter Server Appliance Error.

Hi Community,

I need your colaboration con this issue, y need to update VCSA version 5.5.0 3721164 to 6.0.0 U1. the wizar installer show a problem with the conexion to the DB.

6 Months ago we needed change the postgress BD psw because  the connection to BD without the passw was reported like a vulnelability.

the proccedure applied was this KB... so i tried reverse this  but  I did not succeed.

Please community your colaboration.