(adsbygoogle = window.adsbygoogle || []).push({}); sorry wrong section, and very bad good english.
move this thread.

How to back CEX? CEX back is possible?

How I got the ps3ita4.50 DEX.
rebug4.21 DEX → 3.55 DEX Downgrade → ps3ita4.50 DEX → I hope CEX
back CEX is possible..?

and last question.

i hope use RTE for DEX.
if, ps3ita 4.50 install finish. Do I need to set something?

please tell me, thanks.

Moved to corrected section

If you're asking if it's possible to go back to CEX from PS3ITA DEX, then yes it is possible, if you still have your NOR/NAND bin.
I didn't understand your second question, sorry

Thanks Advice! I understand.
How to CEX Change?
I Have NOR/NAND Files! (My PC Back Up)

to change to cex from dex use
3.55 dex downgrader
then flash 4.46 rebug d rex
then use rebug toolbox to change to cex with ur cex nor flash

If, I have installed the DEX System to Rebug 4.21, back CEX is possible?

Go to rebug d rex then change the to cex flash and you're back on cex