ayuda nesecito que me ayuden el a2 uploader me tira este mensaje cuando estoy metiendo el main generic

Código:
phone pre-boot failed,possible RECOVERY needed.
PROCEDURE WAS STOPPED BY USER
Elapsed:2 secs.
ChipID:C900,EMP protocol:0401
BOOTROM MODE DETECTED
OTP LOCKED:1 CID:52 PAF:1 IMEI:35706702253610 CERT:BROWN
LDR:2008-07-23 12:02 CXC1250779_DB31XX_EXPLORER_LOADER_APP_SDRAM_R2A065
LDR CAPS:SYSTEM FLASH GDFS FILESYSTEM TA 
LDR:2009-04-21 18:09 CXC1250843_DB31XX_CS_LOADER_ACC_SDRAM_R2A081
LDR CAPS:SYSTEM FLASH SIGNATURE AUTH 
writing "C:\Documents and Settings\Administrador\Mis documentos\racer\W760_R3EF001_prg12089180_GENERIC_VT_DE.DB3150_CID52_RED.mbn"
ALLOWED DOMAINS:BLUE BROWN RED 
MAXIMUM CID:52
Will flash 840 blocks...
can't get ACK
subblock (68E4D04D/D04A2C00) NAK
Elapsed:90 secs.
mi se es R3EF001