Search XDA Developers for "GT-P5100 Android 7.1.2 LineageOS 14.1". Download the .zip archive. Do not extract this file. 5. Google Apps Package / GApps (Zip Format)
From the XDA thread, he found the trusted links:
Odin is the desktop software used to flash the custom recovery system onto your Samsung tablet.
Look at Odin. One of the ID:COM boxes should turn blue or yellow, and show a message saying "Added!!". This means your drivers are working perfectly.
The is a classic device, but its official software support ended years ago with Android 4.2.2 Jelly Bean. To enjoy modern apps and better security, users often turn to custom firmware to upgrade to Android 7.1.2 Nougat .
Go to the tab in Odin. Uncheck Auto Reboot . (This is crucial; it prevents the tablet from automatically booting into its old stock system, which overwrites the custom recovery).
Swipe the bottom bar to . This completely formats your old operating system. Once done, tap the Home button to return to the main menu. Go to Install .
If you prefer a more modern pixel-like interface, dotOS 1.2 is another excellent choice. It is slightly heavier but visually stunning. Download from the same XDA thread dedicated to GT-P5100.
Install F-Droid as an alternative app store and seek out lightweight, open-source applications that respect your tablet’s hardware limitations.