Converting to CEX means that you can update to any Rogero firmware. Try not to downgrade using pup files as they may affect your PS3's flash and has a chance of bricking. I myself was stuck on DEX, I lost my CEX flash so I couldn't convert back easily. If you do somehow lose your CEX flash and your stuck on DEX, make sure to install 3.55 DEX and have multiman DEX so you can run the eid_root_key.pkg and therefore retrieve your root key. Then do as normal and create your two DEX and CEX flashes and keep them SAFE! Once you have done that put the flashes on the trot of your USB and insert it into the PS3 and run multiman file manager and double tap on the CEX flash. You should then be back on CEX

. REMEMBER THAT CEX IS RETAIL FIRMWARE THAT ALLOWS UPDATES FROM STORAGE DEVICES WHEREAS DEX DOES NOT ALLOW YOU TO DO THIS!
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