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Fire TV Stick 4K (mantis) Prerooted Stock Images [6.2.8.1_r3]

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SweenWolf

Senior Member
Mar 18, 2016
569
428
Paradise
Amazon Fire TV
I installed mantis-6.2.8.1-rooted_r2.zip using twrp and now I'm unable to boot into recovery. It displays 'no command'. Can anyone tell me what I need to do so that I reboot into recovery/TWRP ?
Seems like you no longer have TWRP, if your screen shows no command with a green android then thats stock recovery.
I don't know how it happened but if thats the case you might have to unlock the stick again.
 

fourlans

Senior Member
Oct 10, 2011
99
16
Redmi Note 8 Pro
Xiaomi Poco F3
Thank you for your prompt response and advice.
I've attached a photograph of the screen after I attempt an 'adb reboot recover'. No green Android!
No response to any of the buttons on the Controller except the on/off button which causes a normal reboot of the stick.
 

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  • No Command.jpg
    No Command.jpg
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SweenWolf

Senior Member
Mar 18, 2016
569
428
Paradise
Amazon Fire TV
Thank you for your prompt response and advice.
I've attached a photograph of the screen after I attempt an 'adb reboot recover'. No green Android!
No response to any of the buttons on the Controller except the on/off button which causes a normal reboot of the stick.
That is the stock amazon recovery, you have lost your TWRP, and i think your efuse is blown too.

You WILL have to unlock the stick again by shorting it. (If you are lucky and have your efuse intact)
 

Skel40

Senior Member
Dec 27, 2019
286
137
Moto G 5G
Another system update is on the way - (NS6281/4054)
update-mantis-diff-NS6281_3385_0005604456836-to-NS6281_user_4054_0005940172420.bin
I wouldn't get too excited for this system update. Once you update to that version before the full ota image is released, you blow an efuse
 

dennis148

Member
Aug 15, 2008
40
5
works fine for me!

is there any way to debloat and still use prime video and replace launcher with leanback launcher?
 

Skel40

Senior Member
Dec 27, 2019
286
137
Moto G 5G
Here's the new pre-rooted image for 6.2.8.1_4054 with patches to completely remove ota updates and the accessibility mods are working! This is safe to flash in TWRP:
 

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  • 6.2.8.1_r3_4054_patched.zip
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nomobytes

Member
Aug 2, 2017
36
30
theManhattan
Warning: Don't flash this stock image! It's just for reference for @rbox and other stakeholders. See the op for the full warning.
@rbox , Despite the warning, I installed this stock image as is from TWRP, then mounted /system, removed efuse.sh and ewriter from /system/bin, reinstalled Magisk, then rebooted. Is this procedure safe from blowing the efuse? Is there an easy way to test using ewriter? I was coming from the @rbox -prepared most current prerooted image. @Skel40, @Sus_i @SweenWolf, @Pretoriano80 @k4y0z what do you think?
 
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SweenWolf

Senior Member
Mar 18, 2016
569
428
Paradise
Amazon Fire TV
@rbox , Despite the warning, I installed this stock image as is from TWRP, then mounted /system, removed efuse.sh and ewriter from /system/bin, reinstalled Magisk, then rebooted. Is this procedure safe from blowing the efuse? Is there an easy way to test using ewriter? I was coming from the @rbox -prepared most current prerooted image. @Skel40, @Sus_i @SweenWolf, @Pretoriano80 @k4y0z what do you think?
If you removed ewiter then you should be good to go. That is the file responsible for blowing efuses. But you should know amazon can add some other files to do the same thing. So keep an eye on these folders and check for any added files also.
 

puppinoo

Senior Member
Jun 14, 2008
167
31
Can anyone provide the mantis pre-rooted for OS version 6.2.7.6? I got a new OLED tv and I heard Amazon broke audio codecs since the 6.2.7.7 (which is the one I got on my stick) and since then the audio is transcoded and not correctly passthrough.

Thanks.
 

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  • 1
    Are there any special stpes to take before downgrading? factory reset eg.?
    The special step before testing updates is to take a TWRP backup ;)
    Without a backup you may need to wipe data after the OS downgrade.
    1
    Is updating worth it? Any new functionality? Fixed bugs? Rooted about a year or two ago, still on old version. Never use any Amazon stuff just Wolflauncher and mainly Kodi.

    Is the backup size any smaller? (TWRP backup)
    Not worth at all, a lot more bugs, size grows too. ;)
  • 23
    As usual, this WILL void your warranty and I am NOT responsible for anything you do with this. Installing it properly won't brick your Fire TV, but doing stupid things with it might.

    First, you must be unlocked. You can follow the instructions here for making that happen.

    If you are first starting, you should first unlock, then install this ROM, and THEN install Magisk for root or any other addons. This rom uses addon.d to preserve Magisk and any other addons, but any system modifications like Magisk, gapps, etc, that you have installed prior to this ROM will NOT be preserved.

    If you've already unlocked and installed Magisk, then after installing this ROM you need to reinstall Magisk in TWRP.


    Starting with 6.2.6.6, Magisk is always installed.

    Beyond that, Magisk and any other addons will be preserved as you flash newer roms. Consequently, if you would like to remove root, you will need to wipe /system in TWRP prior to installing this ROM. That will prevent it from being restored when installing the ROM.

    Thanks to @k4y0z and @xyz` for the unlock.

    NEVER FLASH A STOCK ROM >= 6.2.8.0 AFTER FLASHING 6.2.8.1_r2 OR LATER! THIS WILL BLOW AN EFUSE.

    Changelog and Downloads:
    8
    I have updated the OP with 6.2.7.7_r1.
    8
    I updated the OP with 6.2.8.0_r1.
    6
    @rbox
    can you add new prerooted image for https://forum.xda-developers.com/t/...stock-images-6-2-8-1_r2.3983091/post-85725921 ?
    P.S. Last post from rbox was Jul 18, 2021 :( Last seen Sep 27, 2021
    Is something happened?

    I updated the OP with 6.2.8.1_r3
    5
    Hi guys, apologies for the noob question as I'm v new to android, i've followed the guide and successfully unlocked my firestick 4k, just wondering exactly how I go about flashing this image.
    If someone could point me in the direction of an idiots guide that would be great.
    Cheers.

    Hi,
    Can't assume responsibility if this breaks your system but this is how I've done (with essential help from community).
    Good luck:
    EDIT: This is done in Ubuntu!
    *** enable adb debugging in Fire TV settings ***
    *** connect stick to pc via usb to connect the stick to adb server ***
    *** check if stick is seen by adb server***
    sudo adb devices
    you should see something like:

    List of devices attached:
    xxxxxxxxxxxxxxxx device

    **reboot to recovery:
    adb reboot recovery
    **push rom zip and magisk:
    adb push ./Magisk-v20.0.zip /sdcard/
    adb push ./mantis-6.2.6.6-rooted_r1.zip /sdcard/
    **go to shell from adb:
    adb shell
    **install rom:
    twrp install /sdcard/mantis-6.2.6.6-rooted_r1.zip
    **install magisk
    twrp install /sdcard/Magisk-v20.0.zip
    **wipe cache (maybe not needed but helps)
    twrp wipe cache
    **reboot
    reboot -p

    ** install Magisk Manager (run command from PC in the folder where you put MagiskManager-v7.3.5.apk)**
    adb install ./MagiskManager-v7.3.5.apk
    * ** open it and check magisk is installed!! ***

    ** disable update
    adb shell
    (ATTENTION! after executing "su" command go to the fire tv screen and wait for magisk manager to accept the root and click to accept!!)
    su

    ** if su worked prompt changed from
    mantis:/ $
    to
    mantis:/ #


    **disable these 2 apps
    pm disable com.amazon.device.software.ota
    pm disable com.amazon.device.software.ota.override

    **clear a pending update and delete the last searched thing from settings. **
    pm clear com.amazon.device.software.ota

    *** I hope I didn't forget anything but can't be sure ***

    thanks A LOT TO @Sus_i for fundamental advices and corrections!