Hello Denis,
The problem is solved by using serverconfig.sh and option Modify where I corrected the port number, where was instead of port number "6400" server name "bodev.vse.sk".
This incorrect attribute was already before the update, so it isn't the 4.1 update problem. It's some historical issue on version SAP BO 4.0, where this incorrect attribute doesn't cause any problems.
For next update (test/productive system) the solution is to correct this attribute before the update to 4.1.
Best regards,
Slavo