upgrade
Syntax
UPGRADE [<irssi binary path>]Parameters
The location of the new binary; if no arguments are given, the current binary file will be used.
Description
Upgrades to a new version without disconnecting from non-SSL servers; please bear in mind that it does not download or compile a new version.
Examples
/UPGRADE
/UPGRADE /home/mike/irssi-dev/bin/irssi