[Guide] [ROM] (mantis) Fire TV Stick 4K Prerooted Android TV Rom (6.2.7.6)

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burcbuluklu

Member
Jun 6, 2018
31
19
After so many trial and error, I've finally saved the latest version of my system with TWRP backup. I want to share this personal setup with you guys since it required a lot of work to debloat, install add-ons, apps, kernels and tweaks. This is a single package that contains many modifications from other threads made for simple, one-time installation. I tried to keep it close to Android TV (Nougat) exprience. However, I kept some of the Amazon software that I use like Alexa and Amazon Appstore.

Guides I found and used for this rom:
!!Please read these threads before you begin!!
!!All credit goes to those developers!!
!!Do at your own risk!!

Some Info:
Android Version: 7.1.2​
Fire OS Version: 6.2.7.6​
Working TWRP Version: 3.3.1-0​
Installed Magisk Version: 20.4​
Installed launcher: Google Leanback Launcher​
Available Internal Storage after installition: 3.15 GB​

Screenshots:
top.pngbottom.pngrecomendations.png

Contains:
==========================================================================================

Working:
  • Alexa
  • Voice Input of Amazon keyboard. (need to enable FireTV IME Keyboard from settings) (long press menu button for quick switch)
  • Amazon Settings
  • Fire TV Remote App (I highly suggest this app. Works perfect for navigation and keyboard input)
  • Amazon Appstore (You can install your previous paid apps from here. Search function in amazon appstore only works with alexa)
  • Google Play Store and Services
  • Magisk
  • Xposed
  • Recommendations on launcher
  • Widevine DRM (Netflix, PrimeVideo etc. works fine)
  • Kodi Audio Passthrough
  • Android Screen Cast
Not working:
  • Google Assistant
  • Google Voice Search
==========================================================================================

Some useful apps that I installed (all can be uninstalled):
  • FX (file manager with root access)
  • Link2SD (app manager with root access. It lets you uninstall, freeze system apps or convert them to user apps and vice versa)
  • Xposed Edge (simple alternative to tasker or key mapper with root access. I've mapped long-press of back button to kill foreground app)
  • LeanKey Keyboard Pro (came with tsynik's magisk module and I loved it)
  • Smart Youtube TV (modded youtube app that enables dozens of options. I'm using it to increase the playback speed of videos)
  • MX and VLC Player (to play local or online streams)
  • Aerial Dream TV (really nice screensaver that uses Apple TV visuals)
  • Prime Video, Netflix, Spotify (not to make the launcher look empty)
Installed magisk modules:
  • Xposed Framework (rovo89)
  • Google TV Apps for FireOS 6 (tsynik)
  • FireTV4k Selinux Fix (Pretoriano80)
Installed xposed modules:
  • Xposed Edge
  • AFTV-XM (tsynik)
  • AFTV-GAPPS-XM (tsynik)
==========================================================================================

Requirements:
  • OTG Adapter
  • USB Keyboard/Mouse
  • USB Stick Formatted Fat32
  • TV or Monitor
  • Firestick 4K
How to install:
  1. Be aware that your warranty will be void.
  2. Backup your files.
  3. Unlock bootloader and install twrp using this guide.
  4. Download and extract Firestick 4K Android TV TWRP Backup.rar to TWRP backups path on USB stick; TWRP > BACKUPS > G070VM0984752N1Q
  5. Do a factory reset via TWRP (use otg adapter and keyboard/mouse to navigate)
  6. Restore from TWRP backup that you prepared.
  7. Reboot to system.
  8. Connect to wifi and log in to your amazon account. (still using keyboard or mouse to navigate)
  9. Go to Settings > Fire OS > Controllers and Bluetooth Devices and pair your Fire TV remote. (now you can ditch the keyboard)
  10. Enjoy.
Mirror:
Additional Notes:
  • Developer options and USB debugging enabled.
  • OTA updates disabled.
  • Disable "Stay Awake" option in developer settings if you want the screensaver to start.
  • Long-press to back button kills the foreground app. It makes quitting activities easier.
  • Long-press to menu button opens fast keyboard switching window. It helps to switch to amazon keyboard when I use voice input.
  • You can change the launcher to whatever you want. I'm happy with Leanback Launcher. I didn't try but there's this.
  • Important: Never install magisk updates from magisk. Use TWRP.
  • If you want to create TWRP backup, select "System Image" and "Vendor Image" insted of system and vendor.
  • Suggestion: FX Web Access makes it easier to tranfer files.
  • Suggestion: I think keyboard from FireTV remote app and alexa's speech to text input are the most efficient input methods if you don't have physical keyboard.
  • Important:
    Play Store downloads not fully compatible with Amazon download manager. In case apps won't install from Play Store - uninstall Play Sore updates from ATV Settings.
    NOTE:
    You need to remove and readd Google account after module update.
  • Installed Netflix and Spotify apps are compatible with alexa.
  • I couldn't make my dualshock 4 controller work with this device. Even with the stock system. Help would be appreciated.
Reddit Posts Of This Guide: Here and Here
==========================================================================================

Big thanks to:
  • @k4y0z and @xyz` for unlocking the bootloader.
  • @tsynik for building those life-saving magisk modules which is basicly the key of this build.
  • @Pretoriano80 for creating a kernel which supports SDCARDFS, exFAT, F2FS, Wireguard, Advanced TCP options, CIFS and NFS, Insecure ADB.
  • @bnevets27 for debloating script.
  • @Skel40 for build.prop tweaks to increase performance.
  • @Bertonumber1 for testing the rom.
 

Attachments

  • Firestick 4K Android TV TWRP Backup.rar
    1.5 GB · Views: 3,070
Last edited:

Bertonumber1

Senior Member
May 17, 2020
703
184
Glasgow UK
Excellent work , a lot of time and effort paid off m8 .
Well done👍

just a small question.... another member had mac issues after restore , I imagine this is same case scenario to his case given it is a restore from another 4k via twrp ?
Has this been tested on other 4K sometimes it csn be problem different devices but should be okay
 
Last edited:
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burcbuluklu

Member
Jun 6, 2018
31
19
Excellent work , a lot of time and effort paid off m8 .
Well done👍

just a small question i saw another member do a restore from one 4k stick to another just a few weeks ago , the result wasnt too good.

I imagine this is same case scenario to his case given it is a restore from another 4k via twrp .
Has this been tested cross-device ?
As i have a spare stick there i can do testing if need be in respect of Wifi Mac,Serial info remaining intact ?
No I didn't tried with another device, unfortunately I have only one :(. I would be appreciated if you test it. Thank you very much. Also can you please share the thread that you mentioned?
 

Bertonumber1

Senior Member
May 17, 2020
703
184
Glasgow UK
Yeah sure heres some information here , not sure if this is different from your technique but sounds similar .....

 
Last edited:

story

Senior Member
Mar 27, 2006
447
24
I got this working on 2 FireTV 4k.

I used the YouTube but I could never get the Amazon voice search to work with it. Do you know how to set it up correclty?
 
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Bertonumber1

Senior Member
May 17, 2020
703
184
Glasgow UK
Just a word to the wise as of recent events it is strongly advised members disable OTA updates on Mantis should they wish to continue modifications such as #root, launchers , adb pm commands etc etc . Update bin 6.2.7.7 has a 2nd "system updates" part to it that contains the boogeyman and is breaking things like adb commands etcetera .
 
Last edited:

burcbuluklu

Member
Jun 6, 2018
31
19
Just a word to the wise as of recent events it is strongly advised members disable OTA updates on Mantis should they wish to continue modifications such as #root, launchers , adb pm commands etc etc . Update bin 6.2.7.7 has a 2nd "system updates" part to it that contains the boogeyman and is breaking things like adb commands etcetera .
It is possible to downgrade anytime with twrp backup right? I might try to build the same setup for the new versions later.
 

Bertonumber1

Senior Member
May 17, 2020
703
184
Glasgow UK
It is possible to downgrade anytime with twrp backup right? I might try to build the same setup for the new versions later.
Yeah ofc , should be able to do this tgrough
It is possible to downgrade anytime with twrp backup right? I might try to build the same setup for the new versions later.
Should be , should be enough to :
Disable addons (xposed )
boot to twrp and wipe /system , dalvik, cache
Leave data alone
Then after previous firmware has been flashed from twrp
Reboot and enable xposed , addons again , maybe another reboot ? IDK
 

burcbuluklu

Member
Jun 6, 2018
31
19
Yeah ofc , should be able to do this tgrough

Should be , should be enough to :
Disable addons (xposed )
boot to twrp and wipe /system , dalvik, cache
Leave data alone
Then after previous firmware has been flashed from twrp
Reboot and enable xposed , addons again , maybe another reboot ? IDK
Ok thanks
 

Velcro31

Member
Oct 9, 2019
10
1
Just wanted to say thanks! My Fire Stick became a mess and this was a breeze to install. Not sure if the following behaviour is intended, but one thing I found annoying was that when you stream something via a streaming service, the video continues to play in the background when you press the home button (you can still hear the audio). I solved this by changing the home button behaviour to "kill current foreground app".
 
Last edited:

Bertonumber1

Senior Member
May 17, 2020
703
184
Glasgow UK
Just wanted to say thanks! My Fire Stick became a mess and this was a breeze to install. Not sure if the following behaviour is intended, but one thing I found annoying was that when you stream something via a streaming service, the video continues to play in the background when you press the home button (you can still hear the audio). I solved this by changing the home button behaviour to "kill current foreground app".

Hi try this app , should kill all background processes and free up some memory also


Thanks to tduk
 
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story

Senior Member
Mar 27, 2006
447
24
I use YouTube a lot so that's the only perspective I can give. I am using the same YouTube apk.
The boot time is significantly longer than FireOS. I hook mine up to the TV USB so it cold boot every time. I would say it's double the amount of time to boot your rom.

1. The remote works beautifully on FireOS. It allows skipping without that shadow thing coming and interrupting and dedicated buttons for play/pause is essential.
2. FireOS using the same APK doesn't support backward on LIVE stream.

I will be switching back it was fun hacking this. It's been a while.
 

Bertonumber1

Senior Member
May 17, 2020
703
184
Glasgow UK
Anybody experiencing not being able to delete anything from priv-app folder on 6.2.7
6 and above ? Trying to delete manually in file explorer . When i try to mount system rw it returns a device/resource busy /dev/block/soc/11230000/by-name 》sytem - system Error .
Ive disabled most of the junk but theres a lot that can be removed permanently .
 
Last edited:

Bertonumber1

Senior Member
May 17, 2020
703
184
Glasgow UK
Try in twrp. I allways use twrp for that.

Boot twrp

adb shell "mount -o rw /system"

Still the same in Twrp mate , same error.
adb shell "mount -o rw /system"
Error : mounting /dev/block/mmcblk0p11 on /system failed : device or resource busy.....WTF?

Is this a new thing with newer os ? Ive never had this before
 

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  • 11
    After so many trial and error, I've finally saved the latest version of my system with TWRP backup. I want to share this personal setup with you guys since it required a lot of work to debloat, install add-ons, apps, kernels and tweaks. This is a single package that contains many modifications from other threads made for simple, one-time installation. I tried to keep it close to Android TV (Nougat) exprience. However, I kept some of the Amazon software that I use like Alexa and Amazon Appstore.

    Guides I found and used for this rom:
    !!Please read these threads before you begin!!
    !!All credit goes to those developers!!
    !!Do at your own risk!!

    Some Info:
    Android Version: 7.1.2​
    Fire OS Version: 6.2.7.6​
    Working TWRP Version: 3.3.1-0​
    Installed Magisk Version: 20.4​
    Installed launcher: Google Leanback Launcher​
    Available Internal Storage after installition: 3.15 GB​

    Screenshots:
    top.pngbottom.pngrecomendations.png

    Contains:
    ==========================================================================================

    Working:
    • Alexa
    • Voice Input of Amazon keyboard. (need to enable FireTV IME Keyboard from settings) (long press menu button for quick switch)
    • Amazon Settings
    • Fire TV Remote App (I highly suggest this app. Works perfect for navigation and keyboard input)
    • Amazon Appstore (You can install your previous paid apps from here. Search function in amazon appstore only works with alexa)
    • Google Play Store and Services
    • Magisk
    • Xposed
    • Recommendations on launcher
    • Widevine DRM (Netflix, PrimeVideo etc. works fine)
    • Kodi Audio Passthrough
    • Android Screen Cast
    Not working:
    • Google Assistant
    • Google Voice Search
    ==========================================================================================

    Some useful apps that I installed (all can be uninstalled):
    • FX (file manager with root access)
    • Link2SD (app manager with root access. It lets you uninstall, freeze system apps or convert them to user apps and vice versa)
    • Xposed Edge (simple alternative to tasker or key mapper with root access. I've mapped long-press of back button to kill foreground app)
    • LeanKey Keyboard Pro (came with tsynik's magisk module and I loved it)
    • Smart Youtube TV (modded youtube app that enables dozens of options. I'm using it to increase the playback speed of videos)
    • MX and VLC Player (to play local or online streams)
    • Aerial Dream TV (really nice screensaver that uses Apple TV visuals)
    • Prime Video, Netflix, Spotify (not to make the launcher look empty)
    Installed magisk modules:
    • Xposed Framework (rovo89)
    • Google TV Apps for FireOS 6 (tsynik)
    • FireTV4k Selinux Fix (Pretoriano80)
    Installed xposed modules:
    • Xposed Edge
    • AFTV-XM (tsynik)
    • AFTV-GAPPS-XM (tsynik)
    ==========================================================================================

    Requirements:
    • OTG Adapter
    • USB Keyboard/Mouse
    • USB Stick Formatted Fat32
    • TV or Monitor
    • Firestick 4K
    How to install:
    1. Be aware that your warranty will be void.
    2. Backup your files.
    3. Unlock bootloader and install twrp using this guide.
    4. Download and extract Firestick 4K Android TV TWRP Backup.rar to TWRP backups path on USB stick; TWRP > BACKUPS > G070VM0984752N1Q
    5. Do a factory reset via TWRP (use otg adapter and keyboard/mouse to navigate)
    6. Restore from TWRP backup that you prepared.
    7. Reboot to system.
    8. Connect to wifi and log in to your amazon account. (still using keyboard or mouse to navigate)
    9. Go to Settings > Fire OS > Controllers and Bluetooth Devices and pair your Fire TV remote. (now you can ditch the keyboard)
    10. Enjoy.
    Mirror:
    Additional Notes:
    • Developer options and USB debugging enabled.
    • OTA updates disabled.
    • Disable "Stay Awake" option in developer settings if you want the screensaver to start.
    • Long-press to back button kills the foreground app. It makes quitting activities easier.
    • Long-press to menu button opens fast keyboard switching window. It helps to switch to amazon keyboard when I use voice input.
    • You can change the launcher to whatever you want. I'm happy with Leanback Launcher. I didn't try but there's this.
    • Important: Never install magisk updates from magisk. Use TWRP.
    • If you want to create TWRP backup, select "System Image" and "Vendor Image" insted of system and vendor.
    • Suggestion: FX Web Access makes it easier to tranfer files.
    • Suggestion: I think keyboard from FireTV remote app and alexa's speech to text input are the most efficient input methods if you don't have physical keyboard.
    • Important:
      Play Store downloads not fully compatible with Amazon download manager. In case apps won't install from Play Store - uninstall Play Sore updates from ATV Settings.
      NOTE:
      You need to remove and readd Google account after module update.
    • Installed Netflix and Spotify apps are compatible with alexa.
    • I couldn't make my dualshock 4 controller work with this device. Even with the stock system. Help would be appreciated.
    Reddit Posts Of This Guide: Here and Here
    ==========================================================================================

    Big thanks to:
    • @k4y0z and @xyz` for unlocking the bootloader.
    • @tsynik for building those life-saving magisk modules which is basicly the key of this build.
    • @Pretoriano80 for creating a kernel which supports SDCARDFS, exFAT, F2FS, Wireguard, Advanced TCP options, CIFS and NFS, Insecure ADB.
    • @bnevets27 for debloating script.
    • @Skel40 for build.prop tweaks to increase performance.
    • @Bertonumber1 for testing the rom.
    6
    It's possible to interact with this ROM on first boot without a keyboard. You must use adb shell over USB. The USB cable connected to your laptop, and the FireTV Stick plugged into HDMI on your monitor.

    1. First make sure the device is booted and you see the FireTV stick over USB with adb with adb devices.
    2. Open a new shell with adb shell. You should see a prompt showing mantis:/ $ (may differ if you're not using a 4K stick.)
    3. You have multiple options now to interact with the UI.
      • input keyevent <number> which allows you to send keypresses to the device as if you were working with a keyboard.
      • input mouse tap <x> <y> which allows you to click things on screen using a grid of coordinates. The top left of your screen is x=0 and y=0. The bottom right of your screen is x=1920 and y=1080. Figuring out the exact coordinate of where you want to click will take some trial and error. Don't be afraid to try. Add more x to make the mouse click something right. Add more y to make the mouse click something in the direction of the bottom of the screen.
    4. The easiest option is to use the keyevent input.
      • Use the following guide to map your keypresses to numbers: https://stackoverflow.com/a/8483797/6252246
      • Examples:
      • input keyevent 19 - Up arrow on keyboard
      • input keyevent 20 - Down arrow on keyboard
      • input keyevent 21 - Left arrow on keyboard
      • input keyevent 22 - Right arrow on keyboard
      • input keyevent 66 - ENTER key on keyboard
      • input keyevent 29 - 'A' key on keyboard
    Your goal is to get the FireTV Stick on your home network by entering in the wifi password. Once it's on your network, you can then use the FireTV app on your phone to interact with the device. You can also navigate to the FireOS settings for Remotes and Controllers and unpair the non-existent remote ID which ships with this ROM. To do that start the pair process. When it asks you to press "select" on the 'old' remote (which you don't have) just press select (tap the pad) on your FireTV app and it will proceed with the pairing.

    Hope this helps someone without a OTG or keyboard like me.
    4
    i'm doing experiment on this rom and google assistant seems to work (except voice search) , if you try to type it works. I bet it needs to be tweaked out , maybe removing/blocking alexa and reassigning the voice button on the remote to trigger google assistant

    EDIT:
    i was right, google assistant works. I've been able to use voice search and use it to control my smart home.
    to make it work:
    -enable google assistant in atv voice settings
    -go home and agree microphone usage trying to make a search
    -go in xposed edge pro
    -choose a button ( i used volume down for test) and set google assistant on a key ( it is under activity > google > searchactivitytrampoline (don't forget to enable button)
    -done

    how to use it:
    press the chosen button
    and press alexa micrphone button and it will work
    2
    Ok my friend i can confirm we are good to go .
    Everything intact remote paired , wifi /ethernet bluetooth all good (y)smooth operation
    Thank you , again excellent work
    2
    Just a word to the wise as of recent events it is strongly advised members disable OTA updates on Mantis should they wish to continue modifications such as #root, launchers , adb pm commands etc etc . Update bin 6.2.7.7 has a 2nd "system updates" part to it that contains the boogeyman and is breaking things like adb commands etcetera .
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