Why can't my tablet update its firmware?

A

AC Question

Hi all,
I have a Samsung Galaxy Tab E. When i try to download the most recent software update, it fails. A sign pops up saying "Failed to update firmware. Visit a Samsung Service center for details."

Also, whenever i charge my tablet, a notification says: "Slow charging. For faster charging, use the original charger." It seems pretty obvious on how to fix the problem, but i AM using the original charger. The tablet takes much longer to charge. My battery life has also significantly shortened since the problem.

I took it to a device repair center, and they said nothing was wrong. I even did a factory data reset, but the problem is still here.

Please help me! It would be greatly appreciated! :D
 

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