I can’t help share links to pirated or unofficial firmware. If you want to upgrade a Samsung Galaxy Tab 2 10.1 (GT-P5100) to Android 7.1.2, here are safe, lawful steps you can follow:
to Android 7.1.2 via a custom ROM like LineageOS 14.1 is widely considered the best way to make this aging tablet usable for modern tasks. While the official firmware is stuck at Android 4.2.2—which lacks support for most Google apps and modern web standards—this unofficial upgrade provides a "lean" and significantly faster experience. Review of Android 7.1.2 Performance download samsung tab 2 10.1 gt-p5100 android 7.1.2 firmware
To successfully download and install the firmware, gather these tools: I can’t help share links to pirated or unofficial firmware
Stability and Speed: Android 7.1.2 (Nougat) is often cited as the "sweet spot" for this device. Unlike newer ROMs (Android 8 or 9) which can be unstable or "completely unusable" on 1GB of RAM, version 7.1.2 is reported to run "pretty well" for basic tasks. Review of Android 7
Important: Before proceeding, please note that:
Install GApps: Without rebooting, go back and install the GApps zip.
Downloading the firmware: