i'm on rogero 4.21 v2.00. finally got it working. i took original eboot , clicked on patch version, resigned to 3.56+ , replaced in usrdir. now i dont get duplex logo , just decline update to 1.01 and it starts right up. the original eboot was in the torrent i downloaded. not sure if the patch version , or resign , or both are needed. but thats what i did , and i got to the language selection screen.
i used all the files , except the update pup. about to re-try after deleting the PS3EXTRASCIN1 & 2 files and all languages except english. i extracted the ps3extracin psarc's on my pc , they are just "making of " videos.
Edit: ok , removing ANY files caused it to crash for me. i tried just adding greek back in , as that is one of the choices at the lang select screen , the other is default . then tried adding all languages , then EXTRASCIN1, and still wouldnt work. only when i added extrascin2 , did it load.
the only file i left out was PS3UPDAT pup i left update folder , but probably don't need it. maybe you can extract EXTRASCIN2.psarc and remove some of the videos inside and repack , to lower file size .. i don't know for sure , and i am tired of messing with it and ready to play !
also , i have 1040 items in my .ps3 keys file i use in aldo's tools , and other tools. i gathered them from various places here on ps3news. so maybe i have some , that others dont. if someone will pm me how to upload it and paste link here , i will.
others , on different CFW's may have different results , but this is what worked for me.
hope this helps