k012 hang in logo-no droid mode-flashed in xfstk -no scope

hang in logo-no droid mode-so can not flash via sd card-one friend in below link saw a trick to get droid mode


""""""""""""""""""" tablet didn’t have droidboot but i flashed fastboot img file with xFSTK-Downloader and tablet succesfully booted to droidboot
but it didn’t worked properly since when i rename firmware to k012_sdupdate and press sdupdate tablet reboots and boot to droidboot again whereas it must reboot to recovery and start updating""""""""""""""""""""""""

similarly i flashed in xfstk as below

still i did not get droid mode-so can not flash

help me