Installing System Update Error.

[AC Question]

Hello, I have a Samsung Galaxy 4 and this morning, I saw that it had a system update alert. So when I started download it, it stops at 92 percent and then for a second it has the android guy on its back with a red traingle on top of it. On the bottom it has error. Then my tablet restarts and restarts the process again. I dont know what to do. Can anyone help?