Cex/dex

Whats the diffence between these two, the only thing I could find was that DEX is simular to the format used for android os -

_http://en.wikipedia.org/wiki/Dex

Im not actually sure if this is a linux question directly.

Quote

The reason i ask is -

The e3 team have announced -

News:
2012-07-25
1: E3 Flasher downgrade and dual boot 4.21 OFW successfully . We also successfully dual boot DEX3.55-CEX3.55 . We are studying other dual boot way like DEX4.2-CEX4.21, DEX4.2-CEX3.55 which can help E3 flasher user enjoy more function .

2: We are developing one key switch function for E3 flasher user. User convert DEX to CEX and CEX to DEX very easy ,just like our one key downgrade way.
We will release it free for E3 flasher user when complete.

3: We will release a great news for all PS3 user in next few days, and also with lots of free new game EBOOT .

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Or maybe its eu/us?

I don't have a clue any nudges in right direction would be appreciated.

Despite being inundated with replies, I did find the answer to this :)

I will elaborate, but will take quite a lengthy post