So you have a rooted Samsung Galaxy Tab 7.7. And for some reason you wish to reverse the process and unroot it. Perhaps you need to send it in to a service center for a warranty claim. Or simply you wish to restore your device back to its original state in order to do an official firmware update via Samsung Kies or OTA (over-the-air).
Whatever the reason is, it's easy enough. You simply need to flash back the original stock kernel. From the original firmware sources, I have extracted the stock kernel for the Galaxy Tab 7.7, 3G+Wifi edition (GT-P6800), with the kernel edition being DXLA2 from the Singapore region. Here are the steps to do this via Odin :
- Look for the file Kernel_P6800DXLA2.tar (do a search for it).
- Run Odin. This assumes you have Odin v3 1.85 installed on your PC. If you have followed the rooting and CWM Recovery installation instructions earlier, you should already have it.
- Turn off and then turn on the tablet in download mode. Hold down both the Power and Volume Down buttons until the tablet turns on, and keep both buttons pressed until the download screen comes up.
- Connect your Galaxy Tab 7.7 to your PC via the USB cable.
- In Odin, click on the PDA button, and select the file Kernel_P6800DXLA2.tar downloaded earlier.
- Click Start, wait a few seconds for the kernel to install and the tablet to reboot.
After flashing the original stock kernel, here's the outcome and side-effects :
- You will lose root access (of course).
- Apps which require root access to run will obviously no longer work (such as Titanium Backup as mentioned in the Top 10 Reasons to Root list).
- You will lose CWM Recovery.
- The SDcard write problem fix should still remain fixed, since root access was required only for a one-time change to the permissions file.
- Your binary counter should not increase since you are flashing back to the original stock kernel.
Hope this helps.