[Sony Xperia ZL] Bird40:
Requirements:

Xperia ZL (C6503) 10.3.A.0.423

Both locked & unlocked bootloader

Root (for example this)

Busybox

Recovery (for example this)

How to install

Download the DeodexC6503_423.zip and save it on SDCARD

Reboot device into recovery

wipe dalvik cache

Flash the DeodexC6503_423.zip

Reboot to system

Enjoy!

Download link, mirror (361,66 MB)

It is not ROM, it is DEODEX for ROM.

This package deodex (convert) odex-files to deodex-files in folders /system/app and /system/framework, and so some of the mod/theme you will need to install again.

List of files in the /system/app/

ApplicationsProvider.apk

ArtFilterCamera.apk

AudioEffectService.apk

Backup-Restore.apk

Backup-wizard.apk

BackupRestoreConfirmation.apk

BasicDreams.apk

BlackTheme.apk

BlackThemeBlueAccent.apk

BlueTheme.apk

Bluetooth.apk

Books.apk

bootinfo.apk

BrowserProviderProxy.apk

CalendarProvider.apk

CameraCommon.apk

CameraExtensionPermission.apk

CarHome.apk

CdfInfoAccessor.apk

CertInstaller.apk

Chrome.apk

ClipsManager.apk

ClockWidgets.apk

Conversations.apk

CredentialManagerService.apk

CustomizedSettings.apk

DefaultCapabilities.apk

DefaultContainerService.apk

device-monitor.apk

DownloadProvider.apk

DownloadProviderUi.apk

DrmDialogs.apk

DrmProvider.apk

DtcpCtrl.apk

EnchantedForest.apk

enhancedusbux.apk

EnterpriseService.apk

Exchange2.apk

ExternalKeyboardJP.apk

facebook.apk

FaceLock.apk

fast-dormancy-wakeup.apk

FBCalendarSync.apk

FBIAppShare.apk

FBMediaDiscovery.apk

FBMusicLike.apk

FBSetupwizard.apk

FusedLocation.apk

Galaxy4.apk

GenericApplicationInstaller.apk

GenieWidget.apk

Gmail2.apk

GmsCore.apk

GMS_Maps.apk

GoogleBackupTransport.apk

GoogleCalendarSyncAdapter.apk

GoogleContactsSyncAdapter.apk

GoogleFeedback.apk

GoogleLoginService.apk

GoogleLyricsPlugin.apk

GooglePartnerSetup.apk

GoogleServicesFramework.apk

GoogleTTS.apk

GpsSatellitesNotification.apk

GreenTheme.apk

helpapp.apk

HoloSpiralWallpaper.apk

Home.apk

HotspotAdvancedSetting.apk

HTMLViewer.apk

IddAgent.apk

Initial-boot-setup.apk

InputDevices.apk

IrRemote.apk

IrRemoteApiService.apk

IrRemoteService.apk

KeyChain.apk

LiveWallpapers.apk

LiveWallpapersPicker.apk

livewaremanager.apk

LocalContacts.apk

LocationBasedWifi.apk

Magazines.apk

MagicSmokeWallpapers.apk

MediaProvider.apk

MediaUploader.apk

MemcardTransportService.apk

MusicFX.apk

MusicWidget.apk

MyXperia.apk

NetworkLocation.apk

nfc-handover.apk

Nfc.apk

NoiseField.apk

NoteWidget.apk

OemCryptoReceiver.apk

OMAClientProvisioning.apk

OmaDownload.apk

OmaV1AgentDownloadServices.apk

OneTimeInitializer.apk

OnOffTools.apk

OrangeTheme.apk

PackageInstaller.apk

PartnerBookmarksProvider.apk

PhaseBeam.apk

phone-usage.apk

Phonebook.apk

Phonesky.apk

PhotoSlideshow.apk

PhotoWidget.apk

PicoTts.apk

PinkTheme.apk

PlusOne.apk

PMSservice.apk

PMSserviceTrigger.apk

POBoxSknMono.apk

POBoxSknPink.apk

POBoxSknSelector.apk

POBoxSknWood.apk

PSCertifiedSettings.apk

PurpleTheme.apk

qcsemcservice.apk

Radio3.apk

ReadyToRun.apk

RecentCallsWidget.apk

RemoteControlService.apk

retaildemo.apk

SecureClockJava.apk

SemcAlbum.apk

SemcAutoPowerOff.apk

SemcCalculator.apk

SemcCalendar.apk

SemcCamera3D.apk

SemcCameraUI.apk

SemcClock.apk

SemcCnapProvider.apk

SemcContactsProvider.apk

SemcCrashMonitor.apk

SemcDlna.apk

SemcEmail.apk

SEMCFacebookProxy.apk

SemcIllumination.apk

SemcMetadataCleanup.apk

SemcMusic.apk

SemcMusicVisualizer.apk

SemcNotes.apk

SemcPhone.apk

SemcPhotoEditor.apk

SemcPowerSaveModule.apk

SemcSettings.apk

SEMCSetupWizard.apk

SemcSimDetection.apk

SemcStorageChecker.apk

SemcTelephonyProvider.apk

SemcTvLauncher.apk

SemcTvOut.apk

SemcUnplugChargerReminder.apk

SemcVideo.apk

SemcWarrantyTime.apk

ServiceMenu.apk

Settings.apk

SettingsProvider.apk

ShareApplication.apk

SharedStorageBackup.apk

ShutDownAnimation.apk

shutdownlistener.apk

SimContacts.apk

SimlockUnlockApp.apk

skin-picker.apk

skin-upholsterer.apk

Skin1.apk

SmallApp-Calculator.apk

SmallApp-Notes.apk

SmallApp-Recorder.apk

SmallApp-Timer.apk

SmallAppManagerService.apk

SmallAppsLauncher.apk

SmallAppWidget.apk

SmartcardService.apk

SmartSearch.apk

SocialEngineCore.apk

SocialEngineFacebookPlugin.apk

SocialEngineFacebookShareFrwkPlugin.apk

SocialEnginePicasaPlugin.apk

SocialEngineTwitterShareFrwkPlugin.apk

socialife.apk

SomcCameraAutoUpload.apk

SomcConnectivityCenter.apk

SomcMirrorLinkManualSwitch.apk

SomcMirrorLinkServer.apk

SomcMirrorLinkSystem.apk

SomcPhotoAnalyzer.apk

SomcPlayAnywhere.apk

SOMCTwitterAccount.apk

SOMCTwitterSetupWizard.apk

SomcWifiDisplay.apk

SomcXperiaLink.apk

SonySCV.apk

Sound-Picker.apk

SoundEnhancement.apk

SoundLevelAlert.apk

SoundRecorder.apk

StartupBatteryChecker.apk

StartupFlagV2.apk

Stk.apk

storefront.apk

Street.apk

SuperStamina.apk

Superuser.apk

SwiqiSettingsService.apk

SystemUI.apk

Tag.apk

Talk.apk

talkback.apk

TetherEntitlementCheck.apk

textinput-tng.apk

TimeService.apk

TopContactsWidget.apk

UnlimitedBurst.apk

UnsupportedHeadsetNotifier.apk

UpdateCenter.apk

usb-mtp-backup-transport.apk

usb-mtp-marlin-wrapper.apk

usb-mtp-update-wrapper.apk

usb-mtp-vendor-extension-service.apk

usbotg.apk

UsbTransportService.apk

UserDictionaryProvider.apk

Velvet.apk

VerifyCertificatesDummyAppApplication.apk

VerifyCertificatesDummyAppMedia.apk

VerifyCertificatesDummyAppPlatform.apk

VerifyCertificatesDummyAppShared.apk

VideoEditorGoogle.apk

Videos.apk

VisualizationWallpapers.apk

VoiceSearchStub.apk

VpnDialogs.apk

WallpaperPicker.apk

WapPush.apk

WAPPushManager.apk

WeatherWidget.apk

WfdService.apk

white-balance.apk

WikipediaPlugin.apk

WirelessControllerManagerService.apk

WorldClockWidget.apk

XperiaLockScreen.apk

YouTube.apk

YouTubeKaraokePlugin.apk

YouTubePlugin.apk

List of files in the /system/framework/

am.jar

android.policy.jar

android.test.runner.jar

apache-xml.jar

AsahiSignature.jar

bmgr.jar

bouncycastle.jar

browsermanagement.jar

bu.jar

cneapiclient.jar

com.android.future.usb.accessory.jar

com.android.location.provider.jar

com.android.nfc_extras.jar

com.google.android.maps.jar

com.google.android.media.effects.jar

com.google.protobuf-2.3.0.jar

com.google.widevine.software.drm.jar

com.playstation.playstationcertified.jar

com.quicinc.cne.jar

com.sony.device.jar

com.sony.remotecontrol.ir.v1.jar

com.sony.smallapp.jar

com.sony.snei.amsharedlib.jar

com.sony.sysinfo.jar

com.sonyericsson.android.omacp.jar

com.sonyericsson.android.socialphonebook.dynamic.jar

com.sonyericsson.appextensions.jar

com.sonyericsson.audioeffect.jar

com.sonyericsson.autopoweroff.jar

com.sonyericsson.bluetooth.a2dp.jar

com.sonyericsson.cameraextension_impl.jar

com.sonyericsson.colorextraction_impl.jar

com.sonyericsson.dlna.dtcpplayer.jar

com.sonyericsson.dlna.playanywhere.jar

com.sonyericsson.dlna_impl.jar

com.sonyericsson.dtcpctrl_private_impl.jar

com.sonyericsson.dtcpctrl_protected_impl.jar

com.sonyericsson.eventstream.jar

com.sonyericsson.idd.jar

com.sonyericsson.illumination.jar

com.sonyericsson.media.infinite.extension_1.jar

com.sonyericsson.metadatacleanup.jar

com.sonyericsson.mimetype.jar

com.sonyericsson.music.jar

com.sonyericsson.musicvisualizer.jar

com.sonyericsson.navigationbar_impl.jar

com.sonyericsson.nfc.handover_impl.jar

com.sonyericsson.privateapis_impl.jar

com.sonyericsson.renren.proxy_impl.jar

com.sonyericsson.snp.video_impl.jar

com.sonyericsson.startupflag.jar

com.sonyericsson.sysmon.jar

com.sonyericsson.system.jar

com.sonyericsson.updatecenter.jar

com.sonyericsson.uxp.jar

com.sonyericsson.uxpres.jar

com.sonyericsson.video.jar

com.sonymobile.cameracommon_impl.jar

com.sonymobile.crashmonitor.jar

com.sonymobile.enterprise_impl.jar

com.sonymobile.facebook.proxy.api.jar

com.sonymobile.faceeditor.jar

com.sonymobile.media.dashboard.extension.jar

com.sonymobile.mediacontent.jar

com.sonymobile.musicslideshow.jar

com.sonymobile.nfc_impl.jar

com.sonymobile.photoanalyzer.jar

com.sonymobile.playanywhere.jar

com.sonymobile.settings.illumination.jar

com.sonymobile.smime.jar

com.sonymobile.snp.beacon_impl.jar

com.sonymobile.snp.video.capability_impl.jar

content.jar

core-junit.jar

core.jar

digitalpensdk.jar

digitalpenutil.jar

ext.jar

framework-res.apk

framework.jar

framework_ext.jar

ime.jar

input.jar

javax.btobex.jar

javax.obex.jar

mms-common.jar

modemwarmup.jar

monkey.jar

org.codeaurora.Performance.jar

org.kxml2.wap.jar

org.simalliance.openmobileapi_impl.jar

pm.jar

qcmediaplayer.jar

qcnvitems.jar

qcrilhook.jar

qcsemcserviceif.jar

requestsync.jar

SemcGenericUxpRes.apk

semcrilextension.jar

semc_audioeffectif.jar

semc_bootinfoif.jar

semc_cdfinfoaccessorif.jar

send_bug.jar

services-ext.jar

services.jar

settings.jar

svc.jar

techdatamanager.jar

telephony-common.jar

telephony-msim.jar

uiautomator.jar

WfdCommon.jar

Credits - Desperanto86

Tools to deodex is here