The problem on CFW 3.55 are the Vita Drivers. I don't know much about FW's above 3.70 and if there's a way to extract the Drivers and install them to 3.55. I ask KaKaRoTo by Time if there any Possibility... but what i read, this is useless as you already sait PS3 = just Host.
And if you have fully access to the Vita there should be a way, because as you say, the Vita control the transfer more than the PS3. Or we could work on an custom File Manager.
Okay but you've mentioned the Netflix app. I've already read some articles and people say that the App is buggy. It sometimes slow down ect... Have you take a closer look on the App already ?
Yeah, but you give us some hints how to probably get the Keys...
And Dualboot/Bootstrapping....hmm sounds good. I hope to see something soon from you
I take a look on my Vita tomorrow