The thing is I’ve successfully set up the connection to start with.

PSM Development Assistant

PSM Development Assistant is a software for debugging PSM Applications on PlayStation®Vita and PlayStation™Certified devices. You need to obtain a PSM Publisher License for debugging on target devices.

 

You can download PSM Development Assitant for PS Vita from PlayStation®Store. Please go through the following steps on your PS Vita:

  1. Sign-in with the SEN account you used for PSM Developer registration.
  2. Launch PS Store applicaiton.
  3. Tap (Options) > [Download List].

    1. You will see “PSM Development Assistant” on the list and tap [Download].

PS Vita – An error has occurred (NP-9948-0)

Great, no further explanation just an error. Googling the result doesn’t yield anything either.

It may be a beautiful piece of hardware, but as far as I’m concerned the Vita OS still has way too many bugs, way too many things wrong with it.

Trying to connect to the PlayStation store (The service is currently undergoing maintenance. (NP-2238-5)

The latest version of the system software is already installed (C3-12049-6)