[Galaxy Tab Pro 12.2, 10.1, 8.4 Original Android De] menner-xda:
(I open a dedicated thread here, since the other one is titled [LineageOS], not /e/OS, and another one is under [/e/OS], not under Samsung.)

Android 10 / LineageOS 17.1 based /e/OS 1.17-q build for SM-T900 / v2awifi and SM-T520 / n2awifi, for Samsung Tab Pro12.2" and 10.1 (built 2014)

Sources: Exynos5420 team and LineageOS and /e/ Foundation.

https://gitlab.e.foundation/e/os --- (/e/OS v1.17-q)

https://github.com/LineageOS (LineageOS 17.1 and AOSP 10.0)

https://github.com/exynos5420/ (Kernel, Device, Vendor)

I had to made small fixes to enable the microphone and for consumerIR to work around thte still broken IR support.

For v2awifi I patched exynos5420 v2a-common files to get the kernel compiled.

/e/OS security level is of November 2023 (when /e/ Foundation stopped support for Android Q).

Android security level is of February 2023 (when Google stopped support or Android 10).

Kernel security level is of 2016 since the Exynos5420 kernel is 3.4 (with some Exynos patches up to 2023).

Install this /e/OS ROM via TWRP 3.7.x recovery for v2awifi or n2awifi, after a factory reset of the device (/data is lost, emulated and real SD are not). (I can't test it since I don't have a v1awifi).

Use this ROM at your own risk. I can't guarantee you it will work.

I'm not responsible for any damage to your device of any sort.

By flashing this you take responsibility of anything that happens.

Process at your own risk!

On v2awifi I tested successfully: WLAN, USB storage and ADB, ADB network debugging, both cameras, sound recording, bluetooth, GPS. I didn't test magnetic sensor. IR doesn't work.

Working /e/OS apps are at least: Mail, Bromite browser, AppLounge app store, NewPipe youtube, MagicEarth maps, Magisk, /e/ murena.io sync, Files, Amaze (from LineageOS) are working.

/e/OS Bliss launcher is always in portrait mode since /e/OS is optimized for phones. I replaced it with open source KISS launcher which has a landscape mode.

I'm hoping the n2awifi image will work also. I can't test it, since I don't have this device. Memory is only 2GB, compared to the 3GB of v2awifi, so zswap+swap might be necessary, see below.

Installation:

1. Flash latest official Samsung Firmware with ODIN

2. Flash latest TWRP Recovery for your device (v2awifi or n2awifi)

3. Backup all partitions

4. Wipe cache and data partitions

5. Install LineageOS 14.1; boot LOS 14.1; boot to TWRP again. Without that prerequisite, this /e/OS ROM probably won't start (maybe LOS 14.1 adjusts partitions).

6. Wipe cache and data partitions

7. Install /e/OS ROM.ZIP (link below)

8. No GApps needed since /e/OS comes with AppLounge store and MicroG (LocationService and fakeStore)

9. Reboot and Enjoy

10. Optional root: Install Magisk App, patch the boot image (see below), install the patched boot.img via TWRP recovery.

11. Optionally enable zswap and swapfile (see below)

Download links:

(7a) /e/OS 1.17-1 for v2awifi ROM image

(7b) /e/OS 1.17-1 for n2awifi ROM image

(10a) unpatched boot.img for v2awifi

(10b) unpatched boot.img for n2awifi

Alternative download links

(11) I recommend the use of a swapfile (which also enables zswap) to avoid freezes due to insufficient memory. See my post about "Android 7+ Swapfile Mod" here.