[Fire Q&A, Help & Troubleshooting] ScottIsMyName:
Yes, I did.

I can even show you like this:

mustang:/system/priv-app # ls -1 *
AdvertisingIdSettings:
AdvertisingIdSettings.apk
oat

AmazonKKWebViewLib:
AmazonKKWebViewLib.apk
oat

AmazonPlatform-release:
AmazonPlatform-release.apk
oat

AmazonTabletSettings:
AmazonTabletSettings.apk

ArcusListener:
ArcusListener.apk
oat

BackupRestoreConfirmation:
BackupRestoreConfirmation.apk
oat

CarrierConfig:
CarrierConfig.apk
oat

ConnectivityDiag:
ConnectivityDiag.apk
oat

ContentSupportProvider:
ContentSupportProvider.apk
oat

CrashManager:
CrashManager.apk
oat

CredentialLockerAndroid-tablet-release:
CredentialLockerAndroid-tablet-release.apk
oat

CtsShimPrivPrebuilt:
CtsShimPrivPrebuilt.apk

DefaultContainerService:
DefaultContainerService.apk
lib
oat

DeviceBackupAndRestore-release:
DeviceBackupAndRestore-release.apk
oat

DeviceBackupAndRestoreInternalSDK-release:
DeviceBackupAndRestoreInternalSDK-release.apk
oat

DeviceClientPlatformContractsFramework:
DeviceClientPlatformContractsFramework.apk
oat

DeviceMessagingAndroid:
DeviceMessagingAndroid.apk
oat

DeviceMessagingAndroidInternalSDK:
DeviceMessagingAndroidInternalSDK.apk
oat

DeviceMessagingAndroidSDK:
DeviceMessagingAndroidSDK.apk
oat

ExtServices:
ExtServices.apk
oat

ExternalStorageProvider:
ExternalStorageProvider.apk
oat

FireApplicationCompatibilityEnforcer:
FireApplicationCompatibilityEnforcer.apk
oat

FireApplicationCompatibilityEnforcerSDK:
FireApplicationCompatibilityEnforcerSDK.apk
oat

FireOSDownloadProvider:
FireOSDownloadProvider.apk
oat

FireOSDownloadProviderUi:
FireOSDownloadProviderUi.apk
oat

FireOsMiddlewareDebugApp:
FireOsMiddlewareDebugApp.apk
oat

FireRecessProxy:
FireRecessProxy.apk
oat

FireStorageManager:
FireStorageManager.apk

FireTvSaleService:
FireTvSaleService.apk
oat

FusedLocation:
FusedLocation.apk
oat

IvonaTTS:
IvonaTTS.apk
lib
oat

IvonaTtsOrchestrator:
IvonaTtsOrchestrator.apk
oat

LogManager-logd:
LogManager-logd.apk
oat

ManagedProvisioning:
ManagedProvisioning.apk
oat

MapsAPIClientServices-release-signed:
MapsAPIClientServices-release-signed.apk
oat

MapsAPISupportLibrary-release-signed:
MapsAPISupportLibrary-release-signed.apk
oat

MediaProvider:
MediaProvider.apk
oat

MetricsApi:
MetricsApi.apk
oat

MetricsService:
MetricsService.apk
oat

MtpDocumentsProvider:
MtpDocumentsProvider.apk
lib
oat

OneTimeInitializer:
OneTimeInitializer.apk
oat

ProxyHandler:
ProxyHandler.apk
oat

ReadyNowCore-release:
ReadyNowCore-release.apk
oat

RemoteSettingsAndroid:
RemoteSettingsAndroid.apk
oat

RemoteSettingsInternalSDK:
RemoteSettingsInternalSDK.apk
oat

SettingsProvider:
SettingsProvider.apk
oat

SharedStorageBackup:
SharedStorageBackup.apk
oat

Shell:
Shell.apk
oat

SpeechInteractionManager:
SpeechInteractionManager.apk
oat

SpeechUi:
SpeechUi.apk
oat

StatementService:
StatementService.apk
oat

StorageManager:
StorageManager.apk
oat

SystemUpdatesUI:
SystemUpdatesUI.apk
oat

TabletCamera2:
TabletCamera2.apk
lib
oat

TabletContacts:
TabletContacts.apk

TabletContactsProvider:
TabletContactsProvider.apk

TabletDeskClock:
TabletDeskClock.apk
oat

TabletDocumentsUI:
TabletDocumentsUI.apk
oat

TabletPackageInstaller:
TabletPackageInstaller.apk
oat

TabletSettings:
TabletSettings.apk
oat

TabletSystemUI:
TabletSystemUI.apk
oat

UnifiedShareActivityChooser:
UnifiedShareActivityChooser.apk
oat

VpnDialogs:
VpnDialogs.apk
oat

WallpaperCropper:
WallpaperCropper.apk
oat

WhisperlinkSdk:
WhisperlinkSdk.apk
oat

WhisperplayActivityView:
WhisperplayActivityView.apk
oat

WhisperplayCore:
WhisperplayCore.apk
oat

amazon.alexa.tablet:
amazon.alexa.tablet.apk

amazon.jackson-19:
amazon.jackson-19.apk
oat

com.amazon.aca:
com.amazon.aca.apk
oat

com.amazon.accessorynotifier:
com.amazon.accessorynotifier.apk
oat

com.amazon.ags.app:
com.amazon.ags.app.apk
oat

com.amazon.alexa.externalmediaplayer.fireos:
com.amazon.alexa.externalmediaplayer.fireos.apk

com.amazon.assetsync.service:
com.amazon.assetsync.service.apk
oat

com.amazon.avod:
com.amazon.avod.apk

com.amazon.cardinal:
com.amazon.cardinal.apk

com.amazon.cloud9:
com.amazon.cloud9.apk
oat

com.amazon.cloud9.contentservice:
com.amazon.cloud9.contentservice.apk
oat

com.amazon.cloud9.kids:
com.amazon.cloud9.kids.apk
oat

com.amazon.cloud9.systembrowserprovider:
com.amazon.cloud9.systembrowserprovider.apk
oat

com.amazon.communication:
com.amazon.communication.apk
oat

com.amazon.communication.discovery:
com.amazon.communication.discovery.apk
oat

com.amazon.csapp:
com.amazon.csapp.apk
oat

com.amazon.dee.app:
com.amazon.dee.app.apk
oat

com.amazon.device.sync:
com.amazon.device.sync.apk
oat

com.amazon.device.sync.sdk.internal:
com.amazon.device.sync.sdk.internal.apk
oat

com.amazon.digital.asset.ownership.app:
com.amazon.digital.asset.ownership.app.apk
oat

com.amazon.dp.contacts:
com.amazon.dp.contacts.apk
oat

com.amazon.dp.fbcontacts:
com.amazon.dp.fbcontacts.apk
oat

com.amazon.dp.logger:
com.amazon.dp.logger.apk
oat

com.amazon.dpcclient:
com.amazon.dpcclient.apk
oat

com.amazon.edu.dialog:
com.amazon.edu.dialog.apk
oat

com.amazon.fireinputdevices:
com.amazon.fireinputdevices.apk
oat

com.amazon.firelauncher:
com.amazon.firelauncher.apk
oat

com.amazon.firepowersettings:
com.amazon.firepowersettings.apk
oat

com.amazon.frameworksettings:
com.amazon.frameworksettings.apk
oat

com.amazon.geo.client.maps:
com.amazon.geo.client.maps.apk
lib
oat

com.amazon.glorialist:
com.amazon.glorialist.apk

com.amazon.h2clientservice:
com.amazon.h2clientservice.apk
oat

com.amazon.h2settingsfortablet:
com.amazon.h2settingsfortablet.apk
oat

com.amazon.identity.auth.device.authorization:
com.amazon.identity.auth.device.authorization.apk
oat

com.amazon.imp:
com.amazon.imp.apk
oat

com.amazon.kcp.tutorial:
com.amazon.kcp.tutorial.apk
oat

com.amazon.kindle:
com.amazon.kindle.apk
oat

com.amazon.kindle.cms-service:
com.amazon.kindle.cms-service.apk
oat

com.amazon.kindle.kso:
com.amazon.kindle.kso.apk
oat

com.amazon.kindle.otter.oobe:
com.amazon.kindle.otter.oobe.apk
oat

com.amazon.kindle.personal_video:
com.amazon.kindle.personal_video.apk
oat

com.amazon.kindle.rdmdeviceadmin:
com.amazon.kindle.rdmdeviceadmin.apk
oat

com.amazon.kindle.unifiedSearch:
com.amazon.kindle.unifiedSearch.apk
oat

com.amazon.kindleautomatictimezone:
com.amazon.kindleautomatictimezone.apk
oat

com.amazon.kor.demo:
com.amazon.kor.demo.apk
oat

com.amazon.legalsettings:
com.amazon.legalsettings.apk
oat

com.amazon.media.session.monitor:
com.amazon.media.session.monitor.apk
oat

com.amazon.mp3:
com.amazon.mp3.apk
oat

com.amazon.nimh:
com.amazon.nimh.apk
oat

com.amazon.ods.kindleconnect:
com.amazon.ods.kindleconnect.apk
oat

com.amazon.parentalcontrols:
com.amazon.parentalcontrols.apk
oat

com.amazon.photos:
com.amazon.photos.apk
oat

com.amazon.photos.importer:
com.amazon.photos.importer.apk
oat

com.amazon.pm:
com.amazon.pm.apk
oat

com.amazon.redstone:
com.amazon.redstone.apk
oat

com.amazon.securitysyncclient:
com.amazon.securitysyncclient.apk
oat

com.amazon.sharingservice.android.client.proxy.release:
com.amazon.sharingservice.android.client.proxy.release.apk
oat

com.amazon.socialplatform:
com.amazon.socialplatform.apk
oat

com.amazon.tabletsubscriptions:
com.amazon.tabletsubscriptions.apk
oat

com.amazon.tahoe:
com.amazon.tahoe.apk
lib
oat

com.amazon.tcomm:
com.amazon.tcomm.apk
oat

com.amazon.tv.ottssocompanionapp:
com.amazon.tv.ottssocompanionapp.apk
oat

com.amazon.unifiedsharegoodreads:
com.amazon.unifiedsharegoodreads.apk
oat

com.amazon.unifiedsharesinaweibo:
com.amazon.unifiedsharesinaweibo.apk
oat

com.amazon.unifiedsharetwitter:
com.amazon.unifiedsharetwitter.apk
oat

com.amazon.venezia:
com.amazon.venezia.apk
oat

com.amazon.weather:
com.amazon.weather.apk
oat

com.amazon.webapp:
com.amazon.webapp.apk
oat

com.amazon.windowshop:
com.amazon.windowshop.apk
lib

com.amazon.zico:
com.amazon.zico.apk
oat

com.android.calendar:
com.android.calendar.apk
oat

com.android.email:
com.android.email.apk
oat

com.android.providers.calendar:
com.android.providers.calendar.apk
oat

com.audible.application.kindle:
com.audible.application.kindle.apk
oat

com.goodreads.kindle:
com.goodreads.kindle.apk
oat

com.nokia.odnp.service:
com.nokia.odnp.service.apk
lib
oat

davsclientservice:
davsclientservice.apk
oat

logan:
logan.apk
oat

marketplace_service_receiver:
marketplace_service_receiver.apk
oat

shipmode:
oat
shipmode.apk

sync-provider_ipc-tablet-release:
oat
sync-provider_ipc-tablet-release.apk

sync-service-fireos-tablet-release:
oat
sync-service-fireos-tablet-release.apk

wakewordserver:
lib
oat
wakewordserver.apk

And further:

130|mustang:/ # whoami
root
mustang:/ # pwd
/
mustang:/ # find . 2>/dev/null | grep -i ota.apk