Today the Red Power Team have made available a demo video below of what appears to be the first legitimate PS3 4.21 CFW running Dead or Alive 5 (DOA5) for Custom Firmware users!
To quote, roughly translated from Chinese (with a better translation by and now available): Just deliberately pulled Ida driving to the the RED POWER city where, met with their people and then get it back one is said to brush a 4.21 CFW hosts not open test, ready to begin testing next evaluation please wait...
Updated: Sent to test the host HDMI interface is bad, then do without TV box, component cable, as well as support for AV input of the display device, in looking for a solution