I replaced the mainboard of Galaxy Tab 3 8.0 SM-T310, it's new and no serial programmed in it. However, the pop up of system information keeps popping up and blocking the screen.
I tried re flash the newest stock ROM but not able to get rid of it. It's really annoying as it blocks the whole screen. Any help is appreciated.

I tried re flash the newest stock ROM but not able to get rid of it. It's really annoying as it blocks the whole screen. Any help is appreciated.
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