i don't think it's about the firmware, it shows this too while trying to flash only the custom pack
3/4/2010 11:55:37 AM PHONE STATE: "RETAIL"
3/4/2010 11:55:37 AM FLASH CID: 0052
3/4/2010 11:55:38 AM OTP LOCKED:1 CID:52 PAF:1 IMEI:35739202878581 CERT:RED (i guess this is the problem)
3/4/2010 11:55:41 AM LDR:2008-07-23 12:02 CXC1250779_DB31XX_EXPLORER_LOADER_APP_SDRAM_R2A065
3/4/2010 11:55:41 AM LDR CAPS:SYSTEM FLASH GDFS FILESYSTEM TA
3/4/2010 11:55:41 AM LDR:2009-04-21 18:09 CXC1250843_DB31XX_CS_LOADER_ACC_SDRAM_R2A081
3/4/2010 11:55:41 AM LDR CAPS:SYSTEM FLASH SIGNATURE AUTH
3/4/2010 11:55:41 AM writing "E:\cracker\Firmwares\W910_R1EA033_RED52\W910i_120 1-6143_R8A_Customized_India.zip"
3/4/2010 11:55:41 AM bad file, will not flash it.
3/4/2010 11:55:41 AM Elapsed:8 secs.