id: fireos-amazon-aftomna003
title: "Amazon Ember 55 (Fire TV Omni Mini-LED), Fire OS 8.0"
contributors:
  - zaco-tm
platform: fireos
status: tested
tested_on: "RS8185.3885N"
models:
  - "AFTOMNA003 (Ember 55 / Fire TV Omni Mini-LED; codename grove)"
adb:
  port: 5555
  transport: wifi
developer_mode: >-
  Settings > My Fire TV > About > click the device name 7 times, then My Fire TV > Developer Options > ADB debugging: ON
ip_location: "Settings > Device & Software > About > Network"
prompts:
  - name: "USB debugging authorization"
    blocks_automation: true
    fix: "human presses Allow on the TV; tick Always allow from this computer"
data:
  packages: data/fireos/packages.txt
  protected: data/fireos/protected.txt
  never_disable: data/fireos/never-disable.txt
  user_apps: data/fireos/user-apps.txt
quirks:
  - "DNS filter on Fire OS 8: adb cannot write the app's own folder (Android 11 hides Android/data, the shell gets Permission denied), so dnsfilter.sh pushes the blocklist to /sdcard/Android/media/dnsfilter.android/ and personalDNSfilter has to be pointed at it on screen: Advanced settings > Configure filter update, one row with the file:// URL and Active ticked, the other rows unticked"
  - "The app saves its filter list to disk only when the activity is left (onBackPressed, or any click on the main screen). Editing the row, pressing OK and then rebooting loses the change, and the app goes on using the previous list"
  - "The filter service caches the filter URL at startup, so a list saved in the app is ignored until the service is restarted: tap RESTART on the main screen, then RELOAD FILTER. The proof in the app log is 'Building index for 394 entries!'"
  - "The file:// URL needs three slashes: the app does urlStr.substring(7), so file:///storage/... becomes /storage/... and is read correctly, while two slashes leave a broken relative path"
  - "Driving that screen over adb: the on-screen keyboard is a floating overlay over the right half of the dialog, so screen taps land on the keyboard. Use input keyevent 61 (TAB) to move focus between the fields and 62 (SPACE) for the Active checkbox; clear a field with small batches of input keyevent 67 and check the result with uiautomator dump"
  - "36 of the 40 Amazon packages in data/fireos/packages.txt were disabled; absent on this set: com.amazon.shoptv.firetv.client, com.amazon.tv.fw.metrics, com.amazon.tigris and com.android.nfc. Nothing came back PROTECTED and nothing came back SUSPECT"
  - "com.amazon.neo.minerva.logcat and com.amazon.tv.developer.dataservice keep running after their disable; the residual-process pass turns their ops off and blocks their data"
  - "This is a television: the four HDMI inputs, the tuner and the MediaTek input packages are all in never-disable.txt and were left untouched, and the launcher HOME takeover (accessibility service plus min_futurity=0) works as on Fire OS 7/8"
  - "The on-TV input row resolves to Amazon's Live TV app, which drops into a channel-scan screen when no channels are scanned; launcher 1.2 opens inputs on its own screen instead, via Options > Open inputs with"
  - "Fire OS 8 puts the TV to sleep after the screen-off timeout (300000 ms is five minutes) while an HDMI picture is up, because a passthrough input counts as no activity: the log says 'Going to sleep due to application (uid 1000)' and Ambient's 'Going to sleep because Ambient is disabled through settings' (ambient_experience_enabled was already 0 on this set before dumbtv). dumbtv home 1.3 and later keep the panel awake while an input shows a picture; 1.2 and earlier did not"
  - "The MediaTek input service reports the picture state at once: 'HdmiInputService: checkVideoAvaliable: no signal' or 'notifyVideoAvailable due to stable signal', and the launcher's own log line follows it ('dumbtv : input <id>: video' or 'No signal'). An input with a source still reads 'No signal' when the source is asleep: CEC 'power_status: 1' only says the device is on"
  - "On Fire OS 8 the launcher's settings live in /sdcard/Android/data/tv.dumbtv.home/files/home.conf, which adb cannot read: Android 11 hides Android/data from the shell. Uninstalling the launcher (needed to change the signing key) therefore resets its options to the defaults, and they have to be set again on screen"
  - "Plex for Fire TV 2026.20.0 reports 'Audio codec banned on device' and transcodes TrueHD down to EAC3 on this hardware. Fix inside Plex: Settings > Audio > Passthrough: HDMI with TrueHD and EAC3 enabled"
notes: "Fire OS 8.0 (Android 11) on an Ember 55 television: debloat, lockdown, the DNS filter and the dumbtv home takeover all work and verify.sh exits 0. The DNS filter needs the on-screen step in the quirks, because Android 11 hides the app's folder from adb."
verify:
  blocked: data/blocklists/verify-blocked.txt
  allowed: data/blocklists/verify-allowed.txt