Galaxy note 4 Flashing Issue

HI Android Central,

I am using Galaxy Note 4 (SM-N910G)

1st STAGE
Suddenly in my phone's recovery menu says "drk verification failed",
If i install firmware vis Kies or ODIN it says"write flash memory failed"

2nd STAGE
I flash new Firmware and PIT file(get from some web) via ODIN3_v1.85.
But phone was not worked properly.
When i open recovery boot menu it says"Installing System updates"(5 min)
then after select "wiping menu" or "reboot" it takes 10 min.

3rd STAGE
I flash via Smart switch Emergency Recovery mode but it says above errors.(But it working properly compered to above condition but have same errors)

4th stage
I flash official ROM(AP) and Boot Loader(BL) vis ODIN3_v3.11.
Started properly but same screen says"Installing system updates" and all that.
Sometimes says "NO COMMAND" for a bit sec and goes to recovery menu.

Note: Phone is not rooted

What should i do to solve this issue?

I think that may issue again rise from PIT file?(It seems partition line in recovery menu)
is there any way to remove partition made by PIT file?

What should happen if i check "re-partition"(Not given PIT file) or "Nand Erase All" while flashing with ODIN?

I have BL,AP,CP,CSC for that phone.

Thanks in advance.

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