pls help with dis .. dont know wat else to try

Microsoft Windows [Version 6.2.9200]
(c) 2012 Microsoft Corporation. All rights reserved.

C:\WINDOWS\system32>cd C:\Program Files\Nokia\Flasher

C:\Program Files\Nokia\Flasher>flasher -i
flasher 3.12.1 (Oct 6 2011) Harmattan
WARNING: This tool is intended for professional use only. Using it may result
in permanently damaging your device or losing the warranty.

Suitable USB interface (bootloader/phonet) not found, waiting...
Found device RM-696, hardware revision 1603
NOLO version 2.3.6
Version of 'sw-release': DFL61_HARMATTAN_40.2012.21-3_PR_006
Success

C:\Program Files\Nokia\Flasher>flasher -f -F main.bin
flasher 3.12.1 (Oct 6 2011) Harmattan
WARNING: This tool is intended for professional use only. Using it may result
in permanently damaging your device or losing the warranty.

Found device RM-696, hardware revision 1603
NOLO version 2.3.6
Version of 'sw-release': DFL61_HARMATTAN_40.2012.21-3_PR_006
Sending ape-algo image (7096 kB)...
100% (7096 of 7096 kB, avg. 6117 kB/s)
Suitable USB interface (phonet) not found, waiting...
Ping attempt 1 (250 ms)
Server application: 1.7.2
Found product RM-696 rev. 1603
Server implements softupd protocol version 1.8
Image SW version DFL61_HARMATTAN_40.2012.21-3_PR_001
Image moslo not present
Image mmc not present
Image tar skipped
Image config skipped

Battery level 51 %, continuing.

image [state progress transfer flash speed]
---------------------------------------------------------------------
[_] cert-sw [init 0 % 0 / 0 kB NA ]
[ ] cmt-2nd [pending 0 % 0 / 0 kB NA ]
[ ] cmt-algo [pending 0 % 0 / 0 kB NA ]
[ ] cmt-mcusw [pending 0 % 0 / 0 kB NA ]
[ ] xloader [pending 0 % 0 / 0 kB NA ]
[ ] secondary [pending 0 % 0 / 0 kB NA ]
[ ] kernel [pending 0 % 0 / 0 kB NA ]
[ ] rootfs [pending 0 % 0 / 0 kB NA ]
ERROR: SU_GET_UPDATE_STATUS_REQ terminated with error code 10: Security failure

image [state progress transfer flash speed]
---------------------------------------------------------------------
[f] cert-sw [init 0 % 1 / 1 kB NA ]
[ ] cmt-2nd [pending 0 % 0 / 0 kB NA ]
[ ] cmt-algo [pending 0 % 0 / 0 kB NA ]
[ ] cmt-mcusw [pending 0 % 0 / 0 kB NA ]
[ ] xloader [pending 0 % 0 / 0 kB NA ]
[ ] secondary [pending 0 % 0 / 0 kB NA ]
[ ] kernel [pending 0 % 0 / 0 kB NA ]
[ ] rootfs [pending 0 % 0 / 0 kB NA ]
Fetching error list:
========================================
bb5_rdc_cert_read failed
bb5_rdc_cert_read failed
bb5_rdc_cert_read failed
bb5_rdc_cert_read failed
bb5_rdc_cert_read failed
bb5_rdc_cert_read failed
Downgrade disallowed (1338190008)
[Pipe 0] Finishing in error state with status 10
========================================

ERROR: Failed to flash images

C:\Program Files\Nokia\Flasher>