looooooooooooooooool. i'm laughing my ass off, and i'm saying it in full because i don't believe in any sort of "magical" cfw coming from 3.66 and upwards. yeah, sure,you can bad sign a cfw up until 3.60/3.61? (now that we have the keys), yeah, sure, you can always sniff the memory address lines to get the keys gotten from a decrypted lv0. but afaik there is NO dev which has the 4.21 public keys, which in turn would allow him to "sign" (very poorly) a 4.21 "CFW". and stop saying CFW in full letters because that **** is impossible, call it Badly Signed CFW instead lol. Just like that crap from DH, that's what you'd get, and you wouldn't go very far with it lol.
"Whoever has ears, let them hear."