My samsung galaxy tab3 model-sm-t116ny is in Reboot Loop

Hi,
     I was trying to flash twrp for my Samsung galaxy tab 3 using TWRP manager app downloaded from play store.I got some error in between,and it asked me to reboot, Since then it has been contionously looping.



I am not not able to enter download mode or recovery mode using volume up + power + home buttton,tried all the combinations, nothing seems to work.



And also when my phone boots up,i see a red excalamation mark at top left,can someone tell me what does that mean and how to fix my phone.



Even tried connecting to power chord and pressing power +volume buttons?

Any idea?


Please help.

Thanks!

I didn't find the right solution from the Internet.

References:
www.cnet.com/forums/discussions/my-samsung-galaxy-tab3-model-sm-t116ny-is-in-reboot-loop/

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