HELP me to extract d722 kdz or oct file

d702 fastboot mode to download by flashing below commands in link below

http://forum.gsmhosting.com/vbb/f799…flash-1947255/

"""""""""""""""""extract D722 kdz file

fastboot flash aboot aboot.img
fastboot flash boot boot.img
fastboot flash dbi dbi.img
fastboot flash laf laf.img
fastboot flash misc misc.img
fastboot flash modem modem.img
fastboot flash persist persist.img
fastboot flash recovery recovery.img
fastboot flash rpm rpm.img
fastboot flash sbl1 sbl1.img
fastboot flash tz tz.img

fastboot reboot
after this u will get download mode then u can flash d722.oct and phone willbe ok"""""""""""""""""""""""""""

i have files below-but dont know extract.

D72220d_00.kdz

D72220d_00.oct

help me to extract procedure