Go to Settings > About Tablet and tap "Build Number" seven times.
Odin3 v3.10.7 or v3.12.3 (older versions are more stable with legacy tablets like the Tab 2). 3. TWRP Custom Recovery (Tar Format)
To upgrade your Samsung Galaxy Tab 2 10.1 (GT-P5100) Go to product viewer dialog for this item.
Check Settings > About Device . Confirm your model is strictly GT-P5100 (3G + Wi-Fi). Do not flash these files on GT-P5110 or GT-P5113.