PSN Avatar Grabber and Custom PSN User Avatar mods, today developer Red-J (Twitter) made available on Github a PS4 Payload Avatar Dumper for 5.05 Firmware for those interested.
Download: Avatar_Dumper.bin (6.5 KB) / PS4-Payload-Avatar-dumper-test-master.zip / GIT / PS4 5.05 (Avatar Dumper Mirror) via EdiTzZ / PS4 UI Mod Custom PSN User Avatar.rar via @mohammadfadel
@Leeful confirmed it working via Twitter, stating the following to quote:
"Worked Perfectly for me on 5.05. It dumped both user avatars that were on my PS4. To test the dumped files I created a new user and copied 1 set of the dumped files to my new user's folder: /system_data/priv/cache/profile/0xXXXXXXXX/ and it all worked as it should."
Also making rounds on Twitter for PlayStation 4 developers: