To unroot your Galaxy Tab 10.1, you can download the appropriate stock ROM for your Galaxy Tab 10.1 (find it here on XDA), then do the following:
Put your Galaxy Tab 10.1 in ODIN download mode by holding down both Power Button and Volume Down button and let go when your Tab 10.1 reboots, shows Samsung logo, then 2 menus.
Hit Volume Up button and your Tab 10.1 should be in ODIN download mode.
Open up Odin3v1.85.exe program.
Choose PDA and choose the file ending in “tar.md5″ and hit “Start”.
Reboot your Tab 10.1 by holding down the Power button, now your Galaxy Tab 10.1 is unrooted back to stock.Need Help? Follow/add me on Google+, Facebook, or Twitter!
Want to stay updated on latest Galaxy Tab Hacks news?
Sign up for our Galaxy Tab Hacks Newsletter here so you don't miss a single tip and get personal help via e-mail! First time to rooting and custom ROMs? Please see our Galaxy Tab 10.1 FAQ FIRST!
If you like this post, please CLICK HERE to subscribe to my YouTube channel, THANKS A TON BUD, I OWE YOU ONE!