Open multiman or any ftp server (rebug toolbox ect.) and then open filezilla on your computer.
Connect to your ps3 using the quick connect up the top (jst enter your ps3's ip)
Navagate to DEV_HDD0, game, BLES01717 (if in aus), userdir
Paste the eboot here and you are good to go. Make sure that its called EBOOT.BIN.
As for the update, you can update it normally or press [] on bo2 while and multiman and press update.
Make sure you have 1.18 before you put the eboot in.