Here is a quick follow-up from BYTE
of Team H3XH4X via e-mail, if someone can confirm it we can promote it to the main page etc.
Guide: How to Transfer PKG Files to PS Vita with Installation
How to put pkg on ps vita and to install... things you must have.
1. Multi PKG Decrypter & Extracter
2. SKFU's Vita Pr0xy
3. Hex editor of your choice.
To begin this you must open the ps vita proxy on pc, then turn on your ps vita and setup the proxy on your psvita, set the proxy ip to the proxy ip that shows on your ps vita proxy thats on pc.
Now here's the part where it gets fun... on your ps vita goto the ps store app and look for something to download... while doing that keep an eye on the ps vita proxy and read the log for a link that ends with .PKG
When you see the link with the ending of .PKG copy the link it self and go on your browser on pc and paste the link you copied from ps vita proxy and start the download and save the file to your DOCUMENTS/PSVITA/xxxxxxxxxxxxxx/PGAME and make a folder for the pkg to be saved to.
Now as of right now, theres only two ways of knowing for sure what to name the folder.. you can either name it the 9 letter/number name of which you can get on ps vita proxy or of which ever name you want.
The other method that I went with is opening your hex editor and getting the id name... with that done you can look through the ps vita CMA.EXE and connect as pc to ps vita... when in the backup or restore options select the PSP applications. and the pkg will show up!