1) We dont change "jrElastic2_css_version" and "jrElastic2_javascript_version" in sql, as its same for all installation.
2) Take sql dump after creating account.
3) Release date can be found here : "https://www.jamroom.net/the-jamroom-network/networkmarket/32/system-core"
4) PHP REQUIREMENT LINK: https://www.jamroom.net/the-jamroom-network/documentation/getting-started/774/server-requirements#php-version-71-or-newer and install.php(in install.php it is 7.2.0 and it throws error while installing on PHP 7.1, so we have kept 7.2.0 in our info.xml)
5) zlib.output_compression needs to be off ( output handler 'ob_gzhandler' conflicts with 'zlib' output compression ) Observed on PHP 5.3