Blue Screen after trying to return to 5.2.5.0G

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3

2017-01-21 05:31

I updated mine to 6.0 today to try and see some new features but I didn't like it so I decided to return to 5.2.5.0G, but after finishing the process and the line optimizing apps appeared my phone've kept flashing the blue screen and nothing seems to change. Is it normal? It's been like that for hours