How could I downgrade?

[Infamouz]

Hey, what program can i use to downgrade my firmware? Right now I have the latest; R8BE001 for my W580i.. I used SEUS(Sony's upgrade service), I want to have R6 again, but if i try to connect my phone via XS++ to upload the older firmware, XS++ doesn't recognize the new firmware, so I can't switch it back using XS++.. what is another way I can try to get the older firmware back on? any other programs? Any links and help IS GREATLY APPRECIATED.. i'm having so many retarded lagging problems, screen problems etc. with this firmware.

Heres my log on XS++;

09:27:06| TURN OFF PHONE!
09:27:06| Hold 'C' button on phone and connect phone NOW.
09:27:06| You have 30 seconds...
09:27:06|
09:27:11| Baseband ID: 9900
09:27:11| Protocol Version: 3.1
09:27:11| Phone name detected!
09:27:11|
09:27:11| Profiling SEMC phone...
09:27:11| Platform: DB2020
09:27:11| OTP CID: 51
09:27:11| EROM CID: 53
09:27:11| EROM Color: Red
09:27:11| Phone ID: W580
09:27:11| Region: ROGERS
09:27:11| CDA: CDA102774/87 R10A
09:27:11| Firmware Version: R8BE001
09:27:11| EROM: R3A022
09:27:11| Ready for operation!
09:28:31| After making any changes with FSX
09:28:31| you must press the 'Shutdown' button
09:28:33| Sorry, your phone is NOT SUPPORTED
09:28:33| Error: FSX failed.
09:28:33| FSX Shutdown!
09:28:35| Disconnected... Unplug the phone