[Galaxy S3 Neo Android Development] prototype74:
PLEASE READ THE F.A.Q IN POST #3 FIRST AS IT ANSWERS MOST COMMON QUESTIONS!​

Disclaimer:

/*
* Your warranty is or isn't void now.
* I'm not responsible for bricked devices, dead SD cards, thermonuclear
* war, or you getting fired because the alarm app were on strike.
* Please READ the thread and F.A.Q, if you have any concerns
* about features included in this ROM before you flashing it!
* YOU, are choosing to make these modifications,
* so don't blame anyone else for messing up your device
+ after flashing this ROM.
*/

Variants:

Supported:

Galaxy S3 Neo+: GT-I9301I, GT-I9301Q

Galaxy S3 Neo (Duos): GT-I9300I

Unsupported:

Galaxy S3 Neo+: GT-I9308I

Galaxy S3 Lite: SCH-I939I

ROM information and features:

Base: G800HXXU1CRJ1

Port: A520FXXS2AQH1

Powered by SEPerienceKernel v4.0

Android 6.0.1 Marshmallow

Security patch level 2017-08-01

Deknoxed

Debloated

Deodexed

Full Grace UX featured

Aroma installer

Air Message

Always On Display

App Lock

Call recording

Custom CSC feature v1.0 support

Disabled tima service

Manage app data (built-in firewall)

MirrorLink

Multi Window with pop-up view support

Native 720p60 video playback support (1080p60 works too but not recommended)

OMC (Multi-CSC) support (full list below)

One-handed operation

Game Launcher

Game Tools

Themes Store

Screen Recorder

Smart Manager and Clock China with additional features

Smart Stay

Smart View (screen mirroring)

And more...

About SEPerienceKernel v4.0:

Marshmallow 6.0.1 kernel based on G800HXXU1CRJ1 source

Linux version 3.4.0

Built with Google Linux GCC 4.9.x (32-bit)

Optimized for s3ve3g devices

SWAP RAM support (1023 MB)

New sdcard file system v3.2.0 (stock kernel v2.1.0)

Overall new and/or updated kernel device drivers (wifi, radio, graphics, mdss (2015), vibrator, etc)

Camera driver supports both s5k4h5yb and imx175 camera modules

New charger driver (qpnp-charger) with full samsung battery driver support

Added LZ4 de/compressor support (enabled in crypto and zswap)

CPU Governors:

ondemand

interactive (default)

userspace

powersave

conservative

performance

GPU Governors:

msm_cpufreq

msm-adreno-tz (default)

userspace

powersave

performance

simple_ondemand

IO Schedulers:

cfq (default)

deadline

noop

row

CPU frequencies 300MHz - 1401MHz

GPU frequencies 200MHz - 450MHz

CPU Hotplug support (requires active mpdecision binary)

OTG support (no root or Y-Cable required)

SSRM support

SELinux is enforcing

Known bugs and issues:

FM Radio (FM receiver works fine however audio HAL doesn't support native FM playback; unfixable)

Found a bug which isn't listed here? Please report it with a proper logcat. Bugs caused by 3rd party applications and features (e.g. rooting) are unrelated to the ROM and will be ignored.

Installation:

Before you proceed, make sure you have the latest KitKat Bootloader & Modem installed else you'll encounter RIL issues! F2FS is NOT supported!

If coming from stock: flash any TWRP Recovery with aroma installer support. Recommended are official releases.

Download the ROM zip and push it to internal or external storage

Boot to TWRP Recovery (volume up button + power button)

Backup your current ROM in case something goes wrong

Perform a Full Wipe (system, dalvik-cache, data, cache)

Install the ROM and follow the aroma steps

Reboot to System

Note: First boot may take up to 15 minutes, if it takes longer than usual then you probably selected the wrong camera sensor.

Download:

Latest v3.1 (UF4): AndroidFileHost

New keylayout:

OMC (Multi-CSC) supported countries:

Spoiler content hidden.

Notes:

This ROM is NOT prerooted

SoundAlive has been downgraded to 2.0 (old S5 styled UI)

Credits:

@ananjaser1211 for always being there if I needed help :highfive:

@Thargorsson, @RomanDesigner, @Alastor89 and everyone else from S3NEO_github ;)

@Pavlex4 for OTG power fix in kernel :highfive:

@malbert16442 for his awesome porting guide

@Ticklefish for TMA and TOAD

@amarullz for aroma installer

Last but not least I want to thank my tester and homie @EBY

PM me if I forgot someone :)

Sources:

SEPerienceKernel:

Source code: https://github.com/prototype74/android_kernel_samsung_msm8226/tree/tw-6.0.1

Additional sources:

S3NEO: https://github.com/S3NEO

Additional information:

Contributors

@prototype74, S3NEO_github

ROM OS Version: 6.0.x Marshmallow

ROM Kernel: Linux 3.4.x

ROM Firmware Required: Latest KitKat Bootloader and Modem

Based on: Samsung Grace UX

Version Information

Status: Stable

Current Version: v3.1 UF4

Stable Release Date: 2021-06-12