Select 'Wipe' and perform a Factory Reset (Data, Cache, and Dalvik).
CyanogenMod 11 (Unofficial): For those who prefer a stock Android look, unofficial builds of CM11 (Android 4.4.4) exist. These provide a much cleaner interface and better RAM management than the stock Samsung software, though users sometimes report minor bugs with the 3G radio. custom rom for samsung galaxy tab 3 smt211 updated
NoleKat: This is widely considered the most stable "daily driver" for the SM-T211. Based on the final KitKat firmware, it is heavily debloated, rooted, and optimized for speed. It mimics the look of newer Samsung devices and includes features like multi-window support that were originally missing or sluggish. Select 'Wipe' and perform a Factory Reset (Data,
Samsung’s Galaxy Tab 3 7.0 (SM-T211) remains a nostalgic piece of hardware for many tech enthusiasts. Released in 2013, this 3G-capable tablet originally shipped with Android 4.1.2 Jelly Bean and eventually topped out at Android 4.4.2 KitKat. In the modern era, these software versions are largely obsolete, with many apps from the Google Play Store no longer supporting them. However, the developer community has worked hard to keep this device functional through custom ROMs. If you are looking to breathe new life into your aging tablet, here is everything you need to know about finding and installing an updated custom ROM for the SM-T211. The Challenge of Updating the SM-T211 NoleKat: This is widely considered the most stable
Root Access: Most custom ROMs require your device to be rooted, though the ROM installation process usually handles this.
Reboot the system. Note that the first boot can take up to 10 minutes. What to Expect After Updating