Following @Mathieulh's PS3 CP Exploit and PSA alongside Team Rebug's Rebug DECR LE CFW, today PlayStation 3 developer @Joonie confirmed he was able to successfully downgrade his PS3 DECR 0.85.010 (Reference Tool) console with some pictures of the early v0.85 XMB from both Joonie86 and Mathieulh...