After the Playstation Portable has recently received a firmware update to version 6.60 3 years ago, and they just left was allowed to lie since that was announced today that the PlayStation Store will be removed access via the PSP from the September 15, 2014.
That change will take place on the server side, and not via a firmware update, so neither modified firmware, not-updating will not help.
PSP titles will still be transferred via a computer with or without Media Go on your PSP device, as it always has been and to give input on the E1000. The function new content to download via Wifi but omitted from approx next week. Especially for owners of a PSP Go this is a slap in the face, because those depend on the PSN store, if they (the remainder strongly recommended) firmware does not have piped unofficial.
The PS Vita is not affected by this change, fortunately, if one uses the pre-installed PSN Store App of the PS Vita.
According to the sent email, however, you should still be able to view the download list on the PSP, from a wireless download option, as it is possible to date / was, there is unfortunately nothing.
Translated from here
seems like a bad move if you don't own a ps3, i can't find on the mediago website if they support anything but windows
Edit: Update with response from Sony
As of September 15, 2014, we closed the PlayStation®Store for PSP® (PlayStation®Portable) in European and PAL regions. PSP users will still be able to purchase PSP content from the Sony Entertainment Network Online Store as well as redownload content they purchased in the past from the download list on their PSP systems.”
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