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PS3ITA 4.55 is a DEX CFW and Rogero 4.55 is a CEX CFW all you will do is brick. So no it won't work. But what you can do if you still have the CEX-FLASH.EID0.NORBIN and the DEX-FLASH.EID0.NORBIN you used to go to DEX you can install REBUG 4.46 D-REX CFW and uses those file to go back to CEX the same way you went to DEX. And them you can install Rogero 4.55 CFW or any other CEX CFW.

u have to downgrade first .