Originally posted by FarSideX
What CFW are you using?
You can split the pkg file with PSN Stuff (it is one of the tabs) into smaller pieces then use multiMan's install pkg files to install it as it supports split pkg files.
As for filezilla I set mine to a max of 2 connections to fix those errors, on the PS3 side I use the CCAPI FTP plugin or multiMan's FTP server depending on whether I have my external plugged in or not. If you are running DEX you can also transfer files with target manager.