You can always try, the Vita will inform you if you need to update. My guess is that if you do get to link the Jap account to your Vita, you could do the OpenCMA cable trick and transfer your game from the PS3, but then there'd be the firmware problem or the trophy sync problem (updating is required...

I think you're SOL, since to download your game directly from PSN on the 3.35 Vita you'd have to tie it to your account, which will need updating, and to even access the store you'll need to update, since VitaUpdateBlocker won't work. You could however download the game from your PS3, do the OpenCMA...

Here's my 2nd entry: K-On! Christmas.
Version 1.00

Preview:



BGM: Tea at the Night of Christmas.

v1.00:
Includes previews, BGM, icons and backgrounds.

Download for v1.00: http://bit.ly/1Oczw8o

Here's my 1st entry: Idolm@ster Holidays.
Version 1.0

Preview:



BGM: Yuki ni Negai wo, performed by Haruka Amami.

v1.00:
Initial release. Includes previews, BGM, icons and backgrounds.

Download for v1.0: http://bit.ly/1SI5hGi

Name: Muramasa Rebirth Version: 1.00 Author: RepeatingDigits Description: A Muramasa Rebirth Theme, includes 22 custom icons, 5 backgrounds and BGM. https://i.imgur.com/VycPEAo.jpg Download: https://mega.nz/#!xMtnXbJS!gb7K6aPGpekZdMYQ1leakWT4jN1ywguPlUlFCuXACqM Suggestions are welcome!