I take it that the C902 isnt supported by this tool yet...

this is what my log returned when i followed the instructions on how to connect it:

18:38:51| XS++ v3.1 (Darwin) Ready !
18:38:51| Executed on Microsoft Windows XP
18:38:56|
18:38:56| Attempting to open the interface...
18:38:56|
18:38:56| TURN OFF PHONE!
18:38:56| Hold 'C' button on phone and connect phone NOW.
18:38:56| You have 30 seconds...
18:38:56|
18:39:01| Baseband ID: C900
18:39:01| Protocol Version: 4.1
18:39:01| Warning: IMEI name does not match GDFS name (IMEI:NULL GDFS:n/a)
18:39:01| ...using GDFS name
18:39:01|
18:39:01| Profiling SEMC phone...
18:39:01| Platform: Unknown
18:39:01| OTP CID: 0
18:39:01| EROM CID: 0
18:39:01| EROM Color: n/a
18:39:01| IMEI: n/a
18:39:01| Phone ID: n/a
18:39:01| Region: n/a
18:39:01| CDA: n/a n/a
18:39:01| Firmware Version: n/a
18:39:01| EROM: n/a
18:39:01| Ready for operation!
18:44:57| After making any changes with FSX
18:44:57| you must press the 'Shutdown' button
18:45:03| Sorry, your phone is NOT SUPPORTED