Please note that this is no longer functional.
Want to keep your OtherOS functionality and use PSN too?
All you have to do is make your primary DNS 67.202.81.137 and your ps3 will be able to connect to PSN without any updates.
No need for proxies or anything else :D
Want to keep your OtherOS functionality and use PSN too?
Here’s how:
On your PS3, sign out of PSN
Download and install PS3.ProxyServer.GUI here: http://www.mediafire.com/?ywnmy1wykzi
It doesn’t create shortcuts so navigate to C:\Program Files\CF3B5\PS3.ProxyServer and run PS3.ProxyServer.GUI.exe
Type your current LOCAL IP ADDRESS (probably 192.168.*.*), you can leave the port as 8080, check PS3 Mode
Whatever port you use must be open on your router, so if 8080 is blocked, open it now
Go to the Replace Files tab and click Add
In the left box, paste this address:
http://fus01.ps3.update.playstation.net/update/ps3/list/us/ps3-updatelist.txt
In the right box, click browse and find your LOCAL COPY of the 3.15 ps3-updatelist.txt file, download from here: http://www.mediafire.com/?dyjldy24yod
Back to the Proxy Settings tab, click Start
From your PS3’s XMB, go to Settings, Network Settings, then Internet Connection Settings
Keep everything the way you have it configured now except for the Proxy Server option, make sure you click Use
Type the IP address and port number to your local computer (from step 4 above)
Finish configuring, test connection, make sure it connects
That’s it. If the connection test works, you can now sign into PSN with 3.15 and bypass the 3.21 firmware check
Note that you must keep PS3.ProxyServer.GUI running when you want to use your PS3 until we get Custom Firmware
From: http://www.bonznumber1.com/gaming-consoles/ps3/update-ps3-to-3-21-and-keep-otheros/

