cannot update lg su-760

hi i cannot update lg here is log:



Welcome to Octoplus/Octopus Box LG Software version 1.6.5

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Opening "LGSU760AT-00-V20f-450-05-MAR-22-2012+0_AP.oct"...OK

Please, disconnect battery and connect P999 cable (with 910k resistor).

Initializing device...OK

Writing Firmware...

Connecting to modem CPU...OK

Sending preloader...OK

Sending loader...OK

Initializing flash...Failed!

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Platform: LG Infineon

Connection mode: OMAP

Selected model: SU760

Opening "LGSU760AT-00-V20f-450-05-MAR-22-2012+0_AP.oct"...OK

Please, disconnect battery and connect P999 cable (with 910k resistor).

Initializing device...OK

Writing Firmware...

Connecting to modem CPU...OK

Sending preloader...OK

Sending loader...OK

Initializing flash...Failed!

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