[Galaxy Tab S Android Development] ykkfive:
Hi all

I would like to share my 2nd public sammy kernel+rom, yTab, to you guys. Hope you will like it. Enjoy!

click here for the Android 5.1.1 port (last updated 6/5)​

for info about yTab 1.x please goto post #2 here
​

NOTE:

for SM-T800 and SM-T805 tab S 10.5 wifi/lte ONLY (only SM-T800 is supported for kitkat)

- this yTab ROM/kernel is currently built for SM-T800/SM-T805 only (exynos5420)

- other similar variants like SM-T800x, SM-T800y, SM-T800z etc are not officially supported

- those come with Snapdragon processors are NOT supported too

warranty void

- installing this ROM/Kernel can/may void your tablet's warranty, and resulted in Knox Warranty Void 0x1

overclock warning

- overclocking can reduce hardware life expectancy and can damage the hardware or tablet

- overclocking or under-volting results differ from device to device, and there is no such thing as best values for OC or UV

WHAT NOT TO EXPECT:

frequent updates

fancy installations

bugs free experiences

problems will be solved quickly/ultimately

individual/feature requests (i will listen, but no promise)

KERNEL FEATURES:

compiled with UBER Linaro 4.10 +Graphite

default stock kernel settings (at the moment for version 2.1)

ROM FEATURES:

swipe to resize window from top left/right

new simple restart option menu with custom settings

tabletUI+ (status bar with nav buttons just like tablet mode before on tablets)

preloaded with ViPER Audio Effect

custom boot animation support

enhanced UI speed, smoothness and responsiveness

dvfs disabled (cpu only)

all apps quad view/floating multi windows

dialer enabled for entering factory test secret codes, etc

supports permissive and enforcing selinux

secured storage disabled **1

5GHz wifi enabled supporting all frequency channels

supports synapse

supports private mode

working fingerprint sensor

S6 transparent accuweather widget

Note 4 SNote and action memo

**1 secure storage is bypassed but certain apps/functions depend on it may not run properly due to version mis-matched with kernel sources provided by samsung

​

SCREENSHOTS:

in post #3 below

DEFAULT SETTINGS:

max popup windows set to 4 (default 3), can be customized

reboot prompt disabled

flight mode is removed from reboot menu

selinux set to permissive

persistent recent apps disabled (no recent apps history will be shown in next boot)

TODO:

port more features from yTab 1.1 kitkat

android 5.1.1 port

add more S6/Note 4 apps

add more settings in yTab Synapse Control

custom kernel

KNOWN PROBLEMS:

incorrect status bar layout shown in lock screen

incorrect lock screen layouts

window mode toggle button in the tabletUI+ bar (the rightmost button on the left) is not yet implemented

ir blaster not working FIXED

some other minor issues

i have not tested all extra or stock features yet, especially for those apps/functions i don use but included in this rom for you guys only, so there may be some problems with certain apps or functions. kindly please report any problem so that i can take a look at that. thank you

​

CHANGELOG:

20151114

- yTab 3.0 Special Edition released

[*] 20151113

- yTab 2.6d2a Update (cumulative fix, includes and replaces previous 2.6d and 2.6d1 update)

- fixed problem for updating from 2.6c to 2.6d

- fixed installation problem with twrp

- re-added new wifi driver again (previous failure was due to problem with twrp)

[/list]

20151028

- yTab 2.6d1 Update (quick fix for some T800/T805 by undoing previous wifi related update in 2.6d)

- fixed broken wifi for T800/T805 after updating to yTab 2.6d Update below

20151027

- yTab 2.6d Update

- fixed fingerprint sensor may stop working in a few circumstances

- added back missing functions in yTab Synapse Control

- updated some drivers

20151018

- yTab 2.6c Full (Basic Edition)

- fixed launcher app name overlapping the app icon

- increased the font size of launcher app name

- added an option to remove the nav buttons finally! (against my design actually :crying: )

- some more 5.1.1 integrations

- system updated

- kernel updated (stock based) recompiled with linaro 5.2 (39k in antutu)

changelogs for older versions

20150902

- yTab Kernel 4.1a for T805 ONLY

- fixed data connection problem

- no other new features

20150822

- yTab 2.5b Update2 (includes yTab 2.5b Update below), AND

- fixed tw launcher home grid layouts

20150821

- yTab 2.5b Update (requires 2.5a)

- fixed tw launcher FC when rotate to port mode due to temporary removal of wip features before launch

20150820

- yTab 2.5a Update

- yTab Synapse Control 2.5

- added android 5.1.1 apps and framework

- some features and updates from android 5.1.1

- supports samsung s6 theme center/theme store

- smart manager with working battery optimization

- new launcher** (no custom grid size support yet, some layout issues in port mode, minor icon text problems in landscape mode)

- new gallery/phone/contacts/messages/splanner, etc

- gps fixed

- updated notification list

- added options to disable fingerprint sensor/knox/audit log in yTab Synapse Control

- added options to disable network traffic meter

- added options to customize text color of network traffic meter

- added optional hidden power button by tapping on the system clock at status bar

- added options to remove sfinder and quick connect buttons

- sync problem fixed

- other system tunings

- other updates

20150714

- yTab 2.3b2 Installation Fix for T805 data connection problems

20150705

- yTab 2.3b Full for T800/T805 (includes yTab 2.3b1 and all other 2.x updates in one single pack and nothing more)

- yTab 2.3b1 Update for T800 ONLY with fixed unchangable timezone (kernel only)

20150618

- reuploaded yTab Kernel 4.3d1 beta for T805 with updated script for detecting T805 lte model correctly

- pls download this revised version if yTab Kernel 4.3d beta (released on 20150617) could not be installed on T805

20150617

- yTab Kernel 4.3d beta for T800 and T805 (tested on my T800 only, hence data connection/voice calls etc were NOT TESTED, pls provide feedback)

- added more memory tunings/management

- TZ (default HKT timezone) removed

- reduced the screen brightness during boot

- added back tap2wake (no settings UI yet, default settings: enabled=true, timeout=300secs, accepts power button press=true, requires double tap=true)

- the tap2wake function is temporarily enabled for testing but may be removed/affected by future kernel updates

20150610

- yTab Kernel 4.3a beta for T800 ONLY

- some more oc/uv kernel changes for cpu, gpu and memory (backport from yTab 1.x's default settings)

- more changes for power savings (lowered default voltage values)

- other performance tunings

20150531

- yTab Kernel 4.1 beta for T800 ONLY

- oc/uv enabled for both cpu and gpu

- some changes for power savings

- some other tunings

20150516

- yTab 2.3b1 for T805 ONLY

- fixed unchangable timezone and yTab Synapse Control problem

20150515

- yTab 2.3b (replacing 2.3a with modem problem fixed for T805 and SNote fc)

- yTab Synapse Control 2.3

- added custom TW layout

- new tabletUI+ nav buttons (custom images support in next update)

- added toggle for network traffic meter on the status bar (custom options later)

- removed error message in yTab Synapse Control when no extsd is inserted

- TW launcher updated

- some fonts updated from S6

- added S6 sound files

- some other system and framework updates

20150501

- yTab 2.2 Update for SM-T800 and SM-T805

- yTab Synapse Control 2.1

- added Note 4 SNote and action memo with hand writing recognition and sync (you may need to update your sammy keyboard's under samsung keyboard settings -> select input languages -> select update in menu and update the language update files available, as to have hand writing recognition)

- added S6 Accuweather transparent widget (weather info in port mode only atm)

- further reduce the min size for floating popup windows (about 1/4 of the screen)

- added persistent recent apps toggle

- some other updates/fixes

20150424

- yTab 2.1b Update for SM-T800 and SM-T805

- fixed SMemo fc

- fixed weird SPlanner bug

- disabled unneeded service (SM-T800)

- added phone call recording (SM-T805)

- disabled ascending ringtone (SM-T805)

- added some other contacts/sms/voice call features (SM-T805)

- other updates/fixes

20150419

- yTab 2.1a Update for SM-T800 and SM-T805

- allow apps to access external sdcard

- some minor updates

20150415

- yTab 2.1 Full for SM-T800 and SM-T805

- initial release

​

INSTALLATION:

## IMPORTANT ##

DO NOT wipe the cache partition after the installation as this will break some functions, otherwise you will need to re-apply the latest update

for new users (fresh installation):

remember to make a backup first

I WILL NEVER format your partition or wipe anything for you (except reformat util), please wipe the system/data/cache partitons yourself before install

put the files in sdcard or external sd and install them in recovery (only tested with cwm)

after installed, you can start yTab Synapse Control and change any settings you desire

for existing users (applying updates):

check your current version by opening yTab Synpase Control and see if the version required for the update is met

install the update file in recovery

if applicable, you can apply more updates in the same recovery session without the need to reboot between updates

install multiple updates files in sequence according to the release dates with older files first

FAQ:

[1] how to wipe the partitions properly?

a) for cwm:

wipe and format options -> custom format options -> choose format /system, /cache and /data

b) for twrp:

wipe -> under select partitions to wipe page -> choose cache, data and system

[2] why only the back button at the top works but not others/no synapse can be found after installing yTab/synapse doesnt work properly?

a) most likely you have installed a custom busybox after installing yTab which breaks the predefined symlinks

- to solve this problem, see if it works after uninstalling the custom busybox

b) you have not wiped the partitions properly before installing yTab and thus causing problems with a mixture of old and new system and data

- as to fix this problem, please refer to FAQ #1 for a how to wipe the partitions properly

[3] could not find or missing VPN/google contacts sync/email/exchange, etc after yTab is installed

some apps were removed from the rom (debloated)

- please get them in the removed apps section below, or post a request for the apps you need if they are not available yet

[4] yTab Synapse Control always shows json parse error

get and upload the uci.log file to your online storage by issuing the following command in terminal emulator and then send the link to me via pm (do not paste the log contents in the pm, thanks)

rm /res/synapse/config.json; uci config > /sdcard/uci.log

​

DOWNLOADS: (NO mirror please)

By downloading or using any file here you agree that I am not responsible for any loss or damage whatsoever caused to your devices. So download or use at your own risk

Latest Versions

**Note: updates are not cumulative unless stated

20151113

yTab-Chagall-2.6d2a-Update.zip (includes previous 2.6d and 2.6d1 updates)

primary - pcloud

mirrors provided by @happydish

mirror 1 - DevHost

mirror 2 - mega

size: 11.3MB

md5: 9E31A6DD8A611C5AEE23E2C14C7D3F78

- requires yTab-Chagall-2.6c1-Full (fresh install)

- cumulative fix for 2.6d and/or 2.6d1 updates

- if it shows "ROM: 2.6d" in yTab Synapse Control after installing this update, that means it's a success, else the update is failed

[*] 20151028

yTab-Chagall-2.6d1-Update.zip *** Quick Fix: T800/T805 broken wifi fix for yTab-Chagall-2.6d-Update.zip

primary - pcloud

mirrors provided by @happydish

mirror 1 - DevHost

mirror 2 - mega

size: 2.63MB

md5: 493744E5FA0F4802373BF3A093C0AEE7

[/list]

20151027

yTab-Chagall-2.6d-Update.zip *** broken wifi for T800/T805 reported

primary - pcloud

mirrors provided by @happydish

mirror 1 - DevHost

mirror 2 - mega

size: 11.3MB

md5: D1E4081F9876653C9C3A641714157BB1

- requires yTab-Chagall-2.6c1-Full

20151018

yTab-Chagall-2.6c1-Full.zip (Basic Edition)

primary - pcloud

mirrors provided by @happydish

mirror 1 - DevHost

mirror 2 - mega

size: 902MB

md5: CFA457FCA11FEFE00062B8C561668194

- for T800 and T805 (cant send sms)

- NO CPU/GPU OC/UV, Tap2Wake (DT2W), in Basic Edition

- wipe data, dalvik-cache, cache, system BEFORE install

- to avoid samsung account sync problem, it is suggested to start the Galaxy App in the first boot after install

- some removed apks can be found in Removed apks section below

2.3x -2.5x versions

20150902

boot-yTab-chagalllte-4.1a.zip

primary - pcloud

size: 6.61MB

md5: 67E5165621D9F39593D11BBD5F80AC6E

- for yTab 2.x T805 version ONLY (should be fine with yTab 2.1 or later)

20150822

yTab-Chagall-2.5b-Update2.zip (replacing yTab-Chagall-2.5b-Update.zip released on 21/8)

primary - pcloud

size: 6.25MB

md5: 20BCE6D0C3AEC623D62FD18B33D15E9A

note

- quick fix for yTab-Chagall-2.5a

- need to have 2.5a installed first (listed below)

20150820

yTab-Chagall-2.5a-Update.zip

primary - pcloud

size: 271MB

md5: C71BAA61A97C93FD679833F12F151592

note

- requires yTab-Chagall-2.3x

- no need to wipe anything

20150714

yTab-Chagalllte-2.3b2-Installation-Fix.zip

primary - pcloud

size: 2.05MB

md5: CB9EB27B0A41EAA6A6AF5A0BD220A337

note

- for T805 only

- fixes for data connection problems on T805

- need to install yTab-Chagall-2.3b-Full first

20150705

yTab-Chagall-2.3b-Full.zip

primary - pcloud

size: 997.2MB

md5: 64a8557834aea6021924fa7f52ab4a49

yTab-Chagallwifi-boot-T800-2.3b1-Update.zip

primary - pcloud

size: 6.5MB

md5: 6778afdfd95c99ed5b5ac6080dca7b76

note

- cwm is STRONGLY RECOMMENDED , especially for t805 users as twrp wont detect the correct model, or else may end up with a t800 installation (no harm except modem etc missing)

- read changelogs above for file description

20150516

yTab-Chagalllte-T805-boot-2.3b1-Update.zip

primary - pcloud

importance: HIGH

size: 6.62MB

md5: B0A79EA9A7A4E597CB8B9E82A7F5BF02

** NOTE **

- for yTab 2.x and T805 ONLY

20150515

yTab-Chagall-2.3b-Update.zip for SM-T800/SM-T805 (replacing 2.3a update released on 14/5 and contains all 2.3a changes)

primary - pcloud

mirror - mediafire

size: 327MB

md5: D99E4C35F9A5C612A3E3554DD924C280

** NOTE **

- REQUIRES yTab 2.2 update installed

- fixed SNote fc and T805 modem problem in 2.3a

- in general, NO WIPE is needed, but u can wipe dalvik-cache if u want to remove orphan files

- existing TW launcher settings and widgets will be CLEARED and RESET to default due to the TW launcher upgrade

- there is a minor issue that causes a few seconds delay before the launcher home is shown during boot

- upon the first boot after installation is finished, all dalvik-cache files will be rebuilt and this process takes about 7-8 mins (depends on number of apps installed) due to framework file changes

yTab-Chagall-2.3a-QuickFix.zip for SM-T800/SM-T805 (ONLY for those with 2.3a)

primary - pcloud

size: 30.4MB

md5: 04C2A9A4A404846EAE8344990645F6F3

** NOTE **

- quick fix for 2.3a which fixed SNote fc and T805 modem problem

- only contains the files needed for fixing the problems mentioned above

- if in doubt, get yTab-Chagall-2.3b-Update.zip

2.1x and 2.2x versions

**Note: yTab 2.1 Full is mandatory for all 2.1x and 2.2x update files

20150501

yTab-Chagall-2.2-Update.zip for SM-T800/SM-T805

primary - pcloud

mirror - mediafire

size: 137MB

md5: 706648532360BCB0722B9B18A39899E1

** NOTE **

- REQUIRES yTab 2.1b update installed

20150424

yTab-Chagall-2.1b-Update.zip for SM-T800/SM-T805

primary - pcloud

mirror - mediafire

size: 18.3MB

md5: CFC7A32A6031C4EFEBEF0C280B879731

** NOTE **

- REQUIRES yTab 2.1a update installed

20150419

yTab-Chagall-2.1a-Update.zip for SM-T800/SM-T805

primary - pcloud

mirror - mediafire

size: 35.4MB

md5: 15DBA140E3D748445D7D6FD2B3786D5A

20150415

yTab-Chagall-2.1-Full.zip for SM-T800/SM-T805

primary - pcloud

mirror - mediafire

size: 785MB

md5: EAB2FCCDB0CDFCD87390122ED1115606

** NOTE **

the kernel included in this yTab 2.1 is compiled with default stock kernel settings, so please DO NOT EXPECT huge performance boost

** INSTRUCTIONS **

cwm is SUGGESTED since some twrp versions caused problems as reported by users

for existing Lollipop users:

- data/dalvik-cache wipe is SUGGESTED

- a system partition wipe is STRONGLY RECOMMENDED

- requires a working modem installed for the lte model (not included)

for users with kitkat rom:

- flash a stock lollipop rom BEFORE INSTALLING yTab 2.1 is RECOMMENDED, or at least the bootloader

Removed apks

** Note: install in recovery

For yTab 2.6+

SecEmail

size: 13.1MB

md5: C4B21F17D1AFDCFE85567B71D816CA17

Kies_MtpApplication

size: 13.1MB

md5: BA2442816BA40671A85A7C223B3744C5

Previous Addons

ClockPackage and DualClockDigital

size: 9.13MB

md5: 11EFB730AFECE3A0E01CE6DD4118DF3A

GoogleContactsSyncAdapter

size: 2.25MB

md5: 3BD5E7F537FBE34ADB87D73010B23BB7

SecEmail and SecExchange

size: 23.9MB

md5: FD3D072A9BBE2F19076AF21C13E4B1DC

VpnDialogs

size: 2.11MB

md5: 509E75D1C713DDB23F260009B76A0165

​

If you like it please consider to make a donation to buy me a beer or coffee by clicking here. Thank you! ​

DONATIONS:

thank you very much. really appreciated

barth2

Anonymous (Transaction ID: 4MJ78261612182228)

CREDITS:

thanks for granting me permissions to use some of their works:

DerTeufel1980

halaszk88

xluco

special thanks to:

AndreiLux for the synapse

xperiacle for the air command shortcut or otherwise i have to make one

zhuhang and ViPER520 for the ViPER Audio Effect

tatosXL for his art works Compacticons (** some images may have been resized/modified by me)

SOURCES:

yTab 1.x

Perseus-UNIVERSAL5410 by AndreiLux

Devil2 Kernel by DerTeufel1980

halaszk-UNIVERSAL5420 by halaszk88

Xluco Kernel by xluco

CyanogenMod

Samsung Open Source Release Center

​

.

XDA:DevDB Information

yTab, ROM for the Samsung Galaxy Tab S

Contributors

ykkfive

ROM OS Version: 5.1.x Lollipop

Version Information

Status: Stable

Current Stable Version: yTab 1.1a/2.6d2a/2.7

Stable Release Date: 2016-04-29

Created 2014-11-28

Last Updated 2016-05-05