[Q] GT-P7500V 3G/4G WiFi

i have a galaxy tab 10.1 GT-P7500V 3G/4G WiFi (V = videotron Canada) came on hc 3.2. I installed this custom rom JellyBeanRomICS v8 XXLQ8 GT-P7500, and I would go back to a stock version. Can someone show me the right way to do it without crashing or freezing Please.:confused:

Sorry i'm a noob

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