Important note before reading:
After thorough research, there is no official or stable custom firmware (ROM) that brings Android 7.1.2 (Nougat) to the Samsung Galaxy Tab 2 10.1 GT-P5100 . The last official firmware from Samsung was Android 4.1.2 Jelly Bean. However, the development community (especially on XDA Developers) has produced unofficial ROMs that claim Android 7.1.2. These are often experimental, buggy, and not suitable for daily use. The best stable custom ROM for this tablet is Android 4.4.4 KitKat or Android 6.0 Marshmallow (LineageOS 13).
- In TWRP, go to Wipe → Advanced Wipe – wipe Dalvik, System, Data, Cache (do not wipe Internal Storage if you have the ROM zip on internal SD).
- Go back → Install → navigate to the LineageOS 14.1 zip.
- Swipe to confirm flash.
- After ROM flash, install GApps (ARM → 7.1 → pico).
- (Optional) Install Magisk for root if desired.
- Wipe cache/dalvik again, then Reboot System.
While functional, users report it can be laggy due to the device's 1GB of RAM. Compatibility: Ensure you download the version specifically for "espresso3g" (the codename for the GT-P5100 with 3G support). e/OS community Required Tools & Files
The Tab 2 was usable again. Lightweight apps, YouTube via NewPipe, even basic web browsing. Battery life improved. Arjun learned: The best firmware isn’t always official—it’s the one kept alive by a dedicated community.
- After Odin finishes, reboot immediately into Recovery (Power + Volume Up + Home) to prevent stock recovery from overwriting TWRP.
He verified file checksums (SHA256) when provided.
To ensure a successful and safe firmware installation:
: This is the primary choice for upgrading the GT-P5100. It provides a modern interface and supports newer apps like Google Meet that are incompatible with older Android versions. OmniROM / SlimRoms