As you know new versions of SNX client is distributed within Jumbo Hotfix Accumulator. But we faced with problem when after hotfix installation on SSL Network Extender Portal (https://Gateway_IP_or_Name/CSHELL/snx_install.sh) remains old version but command
cat $CVPNDIR/htdocs/SNX/CSHELL/snx_ver.txt
from SNX Versions shows that we have new version
https://sc1.checkpoint.com/documents/SSL_Network_Extender_AdminGuide/Content/Topics-SNX-Admin-Guide/...
We have made some research and found that new version of SNX is placed in $CVPNDIR/htdocs/SNX/INSTALL/ but file which is downloaded from SSL Network Extender Portal is placed in $FWDIR/conf/extender/CSHELL
So if you want to have newest clien on your portal you shoul replace file snx_install.sh in $FWDIR/conf/extender/CSHELL by file from $CVPNDIR/htdocs/SNX/INSTALL/