problem wirting frimware to P880

this is what i get

Checking data…OK
Platform: LG Infineon
Connection mode: Tegra
Selected model: P880
Opening "LGP880AT-00-V20c-AME-APR-18-2013+0.oct"…
Please, connect powered OFF phone with P999 (with 910k resistor) cable and press power button…OK
Initializing device…OK
Reading info…
Model ID: BS/P880/1
IMEI: 352967-05-662037-4
SW Version: LGP880AT-00-V20d-AME-XXX-NOV-23-2013+0
Sending preloader…Failed!