O prueba con esto , pero perderas el root. Está en inglés:
Now, you also need to install back the stock Recovery so download this zip file and unzip:
Download tabunroot.zip
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 “stockretail.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.