Boot into : Press and hold the Power + Volume Down + Home buttons simultaneously. Release them when a warning screen appears, then press Volume Up to continue. Launch Odin on your PC as an Administrator.
The Exynos 7870 SoC is now legacy hardware, but the community behind it is stubbornly active. As of late 2025, developers are working on for this device. The main hurdles are the GPU drivers (Mali-T830 MP1) and the LTE modem RIL (Radio Interface Layer).
LineageOS remains the most popular custom ROM, offering the best balance of speed and stability. While 19.1 is highly stable, some developers have ported newer versions. sm-p585y custom rom
Hit . Once finished, manually reboot into recovery ( Power + Home + Volume Up ). Phase 2: Flashing the ROM In TWRP, select Wipe > Advanced Wipe . Select Dalvik, System, Data, and Cache . Swipe to wipe. Go to Install and select your Custom ROM zip file. (Optional) Flash GApps (Google Apps) and Magisk (for Root). Reboot System . The first boot can take up to 10 minutes.
Wait for the installation process to finish. This may take 5 to 10 minutes. Step 5: Final Reboot Boot into : Press and hold the Power
If your tablet gets stuck on the boot animation for more than 20 minutes, boot back into TWRP, go to Wipe , tap Format Data , type "yes", and reboot. This clears encryption conflicts.
For the Samsung Galaxy Tab A 10.1 (2016) with S-Pen ( ), custom ROM development primarily revolves around unofficial builds The Exynos 7870 SoC is now legacy hardware,
Click on the button in Odin and select your downloaded TWRP .tar or .img.tar file.
The lock screen appeared. It was fast. Incredibly fast. The animations were snappy, devoid of the heavy TouchWiz lag that had plagued the device for years.
Due to the Exynos-like variant confusion (P585Y is Snapdragon), ROMs are limited but active: