[aries2k]

Originally Posted by -$T@K€R$- thx man i will test it ) ************* [ - Post Merged - ] ************* So i test it , it says always that i have to update 4.21 OFW ;(

Yep, I did try to change the PARAM.SFO to 3.55 but when I went to make the pkg it made a comment about the system ver being 4.2 and not 3.55.
so I just left the PARAM.SFO as is because I thought you were on a higher DEX FW.
are you on 3.55? I´m surprised you just don´t use a backup manager.
anyway you can use FTP to delete the original PARAM.SFO and replace the one from the DUPLEX fix, then restart your ps3 in recovery mode and Rebuild Database
or
you can just install this pkg with the Duplex PARAM.SFO included.

http://www.secondupload.com/K3

the ps3 will probably say you have the same version installed and ask if you want to install anyway.
just say yes.
Now it won´t ask you to update...I think, the PARAM.sfo is set for 3.40 and by installing the pkg it should update the Database.