Here's my log:
11:33:20| You have 30 seconds...11:33:20|
11:33:22| Baseband ID: 8040
11:33:22| Protocol Version: 3.1
11:33:22|
11:33:22| Sending db2010_cid00_prodid_p3l.bin...
11:33:22| Applet ID: 061113 1250 ALUCXC125872_COMPACTPRODUCTION_ID_LOADER P3L
11:33:22| This is a PRODUCTION_ID loader
11:33:23| Activating GDFS...
11:33:23| Phone name detected!
11:33:23|
11:33:23| Profiling SEMC phone...
11:33:23| Platform: DB2010
11:33:23| OTP CID: 49
11:33:23| EROM CID: 49
11:33:23| EROM Color: Red
11:33:23| IMEI: 35744200xxxxxx
11:33:23| Phone ID: W550
11:33:23| Region: AMERICA_1
11:33:23| CDA: CDA102415/1 R2A
11:33:23| Firmware Version: R4CB020
11:33:23| EROM: n/a
11:33:23| Ready for operation!
I flash'd it, and works now, but can't customize. It stops right here:

11:34:00| After making any changes with FSX11:34:00| you must press the 'Shutdown' button
11:34:01|
11:34:01| Sending db2010_cid49red_cs_p3t.bin...
11:34:03| Applet ID: 070417 1739 NPACXC1327364_COMPACT_SEMC_CS_LOADER__P3T
11:34:03| This is a CHIPSELECT loader
11:34:03| Activating loader...
11:34:03| Activating GDFS...
11:34:04| This loader is UNLOCKED
11:34:04| Success! CS-loader has been unlocked!
11:34:04| Please wait while XS builds a list of directories...
11:34:04| Activating filesystem
What to do?