[Nexus 7 (2013) General] sfhub:
KRT16S Factory Image available in Downloads section (below)

KRT16S OTA available in Downloads section (below)

As first mentioned by mdamaged in this post KRT16S "KitKat" is rolling out now.

I did not want to hijack that thread, but wanted to have a simple continuously updated first post that summarizes experiences and consolidates resources like OTA URLs, Factory Image flashing, etc.

You will soon be seeing comments from folks about how KRT16S affects the remaining Multi-touch and Random freeze/reboot issues on google product forums:

Google Nexus 7 product forum

KRT16S touchscreen experiences (near the end of thread)

KRT16S touchscreen experiences (2nd thread)

Mixed improvement with WiFi turned on and Bluetooth keyboards

pil-gss wakelock issue appears fixed

If you need to refer to the old KRT16O thread, it is here.

Initial impressions

Problems and/or fixes

Fix for SMS in deb/LTE 4.4 KRT16S available here (thx maconsultant)

Fix for WhatsApp with ART available here (thx MasterJam882)

Fix for BetterBatteryStats - install 1.15 available here

Specific to KRT16S

Audio seems to be improved, immediately noticeable in audio feedback for taps

Touchscreen software same as KRT16O

Bootloader same as KRT16O (4.01)

Kernel same as KRT16O

Recovery same as KRT16O

Changes to nfc (tap&pay?), camera, audio, drm, google backup, TTS (text-to-speech), facelock, webview/chromium, qualcomm sensors

Magnetic smart wake when wifi lost or deep sleeps appears to be fixed

Fix is in 4.01 bootloader - not necessary to flash 4.4 KitKat ROM (thx meekrawb)

Some bluetooth keyboard improvements

GPS/pil-gss wakelock issues appears to be fixed

New touchscreen software.

Mixed results, will likely depend on screen, some fixed, some not, improvement from JSS15R

ghost touches with aligned fingers mostly gone

stuck touches seem to be gone or greatly reduced

may still have missed touches

may still have slight jitters with aligned finger dragging

Does NOT include GEL (Google Experience Launcher)

install extracted N5 GEL and new Google Search if you want the new experience (thx jxr94)

use Nova Launcher if you want transparent status bars

Root can be installed in the same ways as 4.3

If you use NRT (Nexus Root Toolkit) follow this procedure (thx ruggie0)

Logistics (only for people trying to downgrade or mix/match rom/kernels)

You cannot "dirty" flash from 4.4 rom/kernel back to 4.3 rom/kernel, you'll need to wipe data/factory reset

4.3 kernels will not boot 4.4 rom

New FLO-04.01 bootloader.

New boot animation, sounds, icons.

New Easter Egg (thx magnumlove)

settings->about tablet->android version (rapidly tap 4 times)

Tap "K" a few times to make it spin, then see the final prize

New ART (Android Run Time) replacement for Dalvik VM

Discussion here

Enable using settings->developer options->select runtime

Apps should be odexed (stock is odexed)

First boot will take a while (possibly 15+ minutes)

New cloud/network print options

The new tap and pay setting only shows up if you already have NFC enabled. (thx albundy2010)

To get tap and pay working you need to get the N5 version of Wallet (thx ruggie0)

Quick benchmark1, benchmark2 of 4.4 and stock Dalvik (thx Vanillalite)

Quick benchmark1, benchmark2 of 4.4 and ART (thx Vanillalite)

Change summary:

KRT16O(4.4_r1.1)->KRT16S(4.4_r1.2) - AOSP Changelog

Bootloader version: FLO-04.01

Android version: 4.4

Build/ROM version: KRT16S

Kernel version: 3.4.0-gb0eacf3 / Wed Oct 23 17:41:58 PDT 2013

Mini guides:

adb sideload (install OTA using stock recovery, no need to unlock, preserves user data)

flashing factory images (factory image restore, must be unlocked, option to preserve or wipe user data)

restore stock recovery (if you've installed custom recovery and want to go back to stock)

installing OTA-compatible root/SuperSU (will install SuperSU and fix so that it works with OTAs)

entering safe mode, bootloader, stock recovery (button press sequence can be tricky for fallen android)

Universal ADB drivers (use these if you have trouble with adb recognizing device)

Downloads:

KRT16S

KRT16S Factory Image - flo/WiFi (thanks azrash)

KRT16S Factory Image - deb/LTE (thanks azrash)

Source: pure stock

Format: flash in fastboot/bootloader

Guide: flashing factory images

Caveats:

no existing version requirements

requires unlocked bootloader

options to wipe or preserve user data

JSS15R->KRT16S OTA - flo/WiFi (thanks mokomull)

JSS15Q->KRT16S OTA - flo/WiFi (thanks EthanFirst)

JSS15J->KRT16S OTA - flo/WiFi (thanks EthanFirst)

JWR66N->KRT16S OTA - flo/WiFi (thanks TheManii)

KRT16O->KRT16S OTA - flo/WiFi (thanks wilsonlam97)

JLS36I->KRT16S OTA - deb/LTE (thanks scoof2)

JLS36C->KRT16S OTA - deb/LTE (thanks EthanFirst)

JSS15J->KRT16S OTA - deb/LTE (thanks TheManii)

Source: pure stock

Format: flash with stock recovery (adb sideload) or as regular update.zip in TWRP/CWM

Guide: adb sideload

Caveats:

MUST be running respective unmodified stock (JSS15R, KRT16O, JLS36I, etc.)

does NOT require unlocked bootloader

if you are rooted with SuperSU 1.51 or earlier, OTA will fail near the end. See this post for explanation/fix.

if installing via twrp/cwm suggest installing SuperSU update.zip PRIOR to rebooting to preserve root and custom recovery

preserves user data

KRT16S repackaged TWRP/CWM-flashable - flo/WiFi (thanks scrosler)

Source: slightly modified stock

Format: flash as regular update.zip in TWRP/CWM

Caveats:

no existing version requirements

this is stock functionality but not pure stock binaries so might not work with future OTAs

bootloader 4.01 flash is a SEPARATE install (needed for magnetic smart wake fix)

this is pre-rooted with init.d support

odexed and deodexed versions

preserves user data

Stock kernel/recovery (unzip and flash via fastboot/bootloader)

fastboot flash boot boot.img

fastboot flash recovery recovery.img​

flo/WiFi

stock JWR66N kernel

stock JSS15J kernel

stock JSS15J recovery

stock JSS15Q kernel

stock JSS15Q recovery

stock JSS15R kernel

stock JSS15R recovery

stock KRT16O kernel

stock KRT16O recovery

stock KRT16S kernel

stock KRT16S recovery

deb/LTE

stock KRT16O kernel

stock KRT16O recovery

stock KRT16S kernel

stock KRT16S recovery

Bootloader - flo/deb (unzip and flash via fastboot/bootloader)

fastboot flash bootloader [filename]​

Bootloader v3.14

Bootloader v3.15

Bootloader v4.01

Root/SuperSU

UPDATE-SuperSU-v1.75.zip - install in TWRP or CWM for root (recommended for 4.4)

UPDATE-SuperSU-v1.55.zip - install in TWRP or CWM for root

Custom Recovery (unzip and flash via fastboot/bootloader)

fastboot flash recovery twrp.img​

TWRP 2.6.3.1 (recommended for 4.4)

Stock missing/modified KRT16S files

flo/WiFi

update-KRT16S-debuggerd.zip

update-KRT16S-build.prop.zip

update-KRT16S-BasicDreams.zip