How to fix samsung galaxy A8 bootloop(help) - Android Q&A, Help & Troubleshooting

Hi XDA members,
My samsung galaxy A8(SM-A800F) not booting ..
1. I have tried both lollipop and mm stock roms SM-A800F .
2. Stuck at samsung flashing logo after successfull odin flash .
3. I did wipe data and cache but no use
4. Custom recovery cant flash coz FRP LOCKN
. stock recovery shows as below:
E:failed to mount efs/ (Invalid argument)
dm-variety verification failed...
Need to check DRK first.....
please help me to fix...expecting expert advice...thank you

Use samsung smart switch to install the proper firmware and repair your device

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Find a Odin stock package and flash it( I couldn't find it.. ) or send it back to Samsung to repair it.

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boot help

Please help phone stuck on samsung galaxy siii gt-i9300 logo have got cwm recovery and odin need stock rom with pit ?
Try flashing the latest stock ROM with Odin or factory reset.
where do i find stock rom with pit file ? cannot seem to locate
Try flashing without a pit file.
Stock roms are at Sammobile.com, updato.com, or Samsung-firmware.org.
thanks i will try again but i believe i damaged pit when i was trying to root by selecting re partion box, so re flash with pit firmware or replace motherboard ?
tried to flash stock rom and rom with pit no just stuck on startup with samsung galaxy siii gt-i9300 can get into recovery and odin mode.
Try flashing a stock firmware first. If there is any problems with the partitioning odin will tell you.
If odin says you need a pit file that's when you start looking for one.
thanks for all your help, after flashing with stock rom using odin, phone now boot to samsung logo and keeps looping ?
When i trying to root i think by mistake i ticked the re partion box should i get another motherbaord ?
If the phone flashed a stock ROM without a pit file, try performing a factory reset from recovery mode.
I get this message;
E: failed to mount /data (invalid argument)
cant mount to /data (invalid argument)
Manual mode
applying multi csc
applied csc code
succesfully applied csc code
E: failed to mount /data (invalid argument)
cant mount to /data (invalid argument)
E: failed to mount /data (invalid argument)
quick update after factory reset and loading stock 4.3 phone came to life again, i then installed linear rom and rooted with twrp.

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