To quote, roughly translated: v2.16 Changelog:
NOTE: This is an evaluation version: if it does not work, let me know and tell me which version of CFW you are using and at what point is failing New payload v8 that deletes syscall 36 and use syscall 8 in its place for the redirections. Added Multiman method for disc-less from /app_home (thanks to DeanK for commenting how it works). This increases the compatibility.
Everything is working fine so far (FTP, PS1, PS3, COPY/DELETE etc).
Read more: http://www.ps3news.com/ps3-cfw-mfw/iris-manager-v2-16-ps3-backup-game-manager-updated-by-estwald/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+ps3news%2FKXsI+%28PS3+NEWS+-+PlayStation+3+News+-+PS3News+-+PS3+Games+-+PS3+Hacks+-+PS3+Homebrew%29#ixzz2M3ugo9rR