try this proxy redirecting method* for demos which are no longer available at PSN stores
1. download the demo.pkg you want (for example GT5P-JPN-demo.pkg) on your pc
2. start the proxy program
3. go to the replace files tab, on the left entry, C&P the URL below, on the right entry keep it empty for now
CODE
http://zeus.dl.playstation.net/cdn/HP9000/NPHA80043_00/vSMFHM76mC3nj8lxWFgwBphVBPBFokJii2xweQCaAxf4e6LXciSSjlursGr3bArDm6AxPNY2SBEC4yWxSW4XGX0wIStS0J2N6X9MK.pkg?product=008E&country=sg
http://zeus.dl.playstation.net/cdn/HP9000/...008E&country=sgthis is the actual URL for the SGP store lair demo.pkg
4. sign in and go to SGP Store, start a download on Lair demo, choose background d/loading.
5. exit store, pause the (Lair Trial Version) download.
6. go to proxy program, on the right entry, redirect to another demo in your pc (for example GT5P-JPN-demo.pkg)
7. resume the download, if you do all the steps correctly, you'll notice the filesize of (Lair Trial Version) download has change to that of your selected demo.pkg. after the download is completed, install manually.
*i'm using access to SGP store to redirect to proxy demos, you can use other store demo
*i'm using Lair demo because of its large size (~2GB), you can use other demo but make sure the demo being used to redirect have a larger filesize than the demo.pkg on your pc.