Ls775 can't flash firmware

Hello,
I can't flash zvb firmware for ls775,

Quote:

Opening "LS775ZVB_03.oct"...OK Selecting firmware partitions...OK Selected default partitions! Switching to Download mode...OK Initializing flash...OK Setting options...OK Do you want to format User Data? Reading partitions...OK Formating USERDATA...OK Formating ENCRYPT...OK Writing PrimaryGPT...Failed! LAF Error: 80000121. Please re-flash phone with the latest firmware from the support area. Performed by 2.9.4 Software version.

please help