Rootin Tootin...nothing

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http://forum.xda-developers.com – Hello, I am trying to root my GT P7510, so I can allow it to accept ad hoc wifi connections. So I tried this link from Android Authority called "How to Root the Samsung Galaxy Tab 10.1 WiFi GT-P7510" ( I can't post links yet). Anyhoo - did all the steps...and nothing. No errors. A screen said it was done and gave credits. I tried to root check apps - both came up negative. I tried these steps twice (see full below): In recovery mode, choose “Install zip from sdcard,” then “Choose zip from sdcard,” locate and select “Samsung_Galaxy_Tab_10.1_root.zip”, and fina (HowTos)