Default Need help to recover the partion tables of LS 980

I tried to flash a TWRP into my LG g2 LS980 and stuck up with black screen and tried

dd if=/home/med/Desktop/aboot.img of=/dev/sdb5

dd if=/home/med/Desktop/rpm.img of=/dev/sdb6

dd if=/home/med/Desktop/tz.img of=/dev/sdb8

dd if=/home/med/Desktop/openrecovery-twrp-2.6.3.2-g2d802 of=/dev/sdb15

the last step i did a blender instead of TWRP recovery I used stock recovery and stuck up in a black screen

now while i issue the command "gdisk -l /dev/sdb"


[root@oc8387211648 boobam]# gdisk -l /dev/sdb
GPT fdisk (gdisk) version 0.8.10

Caution: invalid main GPT header, but valid backup; regenerating main header
from backup!

Caution! After loading partitions, the CRC doesn't check out!
Warning! Main partition table CRC mismatch! Loaded backup partition table
instead of main partition table!

Warning! One or more CRCs don't match. You should repair the disk!

Partition table scan:
MBR: not present
BSD: not present
APM: not present
GPT: damaged

Found invalid MBR and corrupt GPT. What do you want to do? (Using the
GPT MAY permit recovery of GPT data.)
1 - Use current GPT
2 - Create blank GPT


Please some one help me.