July 24, 2015, 05:36:57 pm
Hi sushilkumar, if you have a Lumion 5 license, all 5.x updates are free.
There is no way to install 5.7.2 in the 5.0 folder - you'll need to download the 5.7.2 installation files and install it in a new folder.
If you haven't received the 5.x emails with links to the Download Manager, please forward your license and purchase receipt to office[at]act-3d.com and ask them to send you an email for the latest version (5.7.2).