if i have e3 flasher can i downgrade then update my ps3 for trophy and downgrade again
Right now I am not sure if you can. I don't see why you wouldn't be able to, but to be on the safe side, don't until we can confirm it. I will do a little searching around.
Edit:
Found this:
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Also, I'm still wondering about that CFW thing. So can we install CFW, then OFW and then another CFW?