Mt6572 sorry program is abnormal will exit

i got pop up on display SORRY PROGRAM IS ABNORMAL WILL EXIT
then set restart and hang LOGO

try full flash format but not done.
any solution……

log full flash:

Selected Acer: Liquid Z110
Phone must be off with battery inside.
Please insert USB cable now…
Detected : MediaTek PreLoader USB VCOM Port (COM8)
Phone detected…Please wait
Sending DA agent, please wait…
BBCHIP MT6572_S00
EMMC: (29Gb+4096Mb) SANDISK 0x53454d303447
EMMC FW VERSION: 3a:00:00:00:00:00:00:00
BOOT STYLE : EMMC BOOT
Detecting high speed port, wait……
If driver not installed, install high speed port driver.
Detected : MediaTek DA USB VCOM Port (COM10)
Starting flash.
Send preloader…
Download firmware to flash now…
MBR checksum is executing …
EBR1 checksum is executing …
UBOOT checksum is executing …
Error: S_CHKSUM_ERROR
After flash this firmware need to perform some aditional steps
1.Reinsert battery, keep VOL- and power on untill phone will come in factory mode
2.Select line EMMC, and after press home button.
3.Wait untill phone will restart and will stuck on logo(leave for 1 min in this stage).
4.If phone not power on, reinsert battery and perform direct unlock.
If repair fail, please contact us or report in forum to provide help.
Wait untill phone will start charging.
All done.