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

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Skel40

Senior Member
Dec 27, 2019
286
137
Moto G 5G
@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?
That means you now blew the efuse if you flashed the stock image with the stock script. I checked the script from 6.2.8.1 and saw efuse scripts that end up blowing an efuse regardless if you removed ewriter and efuse files. My 4K's efuse is blown because of this so I highly recommend only flashing pre-rooted roms containing no efuse scripts and files. Try unlocking again and tell me if that works.
 
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nomobytes

Member
Aug 2, 2017
36
30
theManhattan
That means you now blew the efuse if you flashed the stock image with the stock script. I checked the script from 6.2.8.1 and saw efuse scripts that end up blowing an efuse regardless if you removed ewriter and efuse files. My 4K's efuse is blown because of this so I highly recommend only flashing pre-rooted roms containing no efuse scripts and files. Try unlocking again and tell me if that works.
Why would I need to unlock when I am already unlocked, rooted with Magisk, and have access to TWRP? I think you are mistaken about my efuse status. When and how do you believe that my efuse is blown, and why should I care since I am already unlocked? When would ewriter have blown the efuse if I removed it in TWRP recovery, immediately after flashing /system, before ewriter could execute? I'm not sure we are all in agreement with you on this. But that's why I asked. Also, ewriter has a read efuse function to test for blown efuses, presumably, as we can see from the efuse.sh script. Does this make any sense @Skel40 ?
 
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Skel40

Senior Member
Dec 27, 2019
286
137
Moto G 5G
Why would I need to unlock when I am already unlocked, rooted with Magisk, and have access to TWRP? I think you are mistaken about my efuse status. When and how do you believe that my efuse is blown, and why should I care since I am already unlocked? When would ewriter have blown the efuse if I removed it in TWRP recovery, immediately after flashing /system, before ewriter could execute? I'm not sure we are all in agreement with you on this. But that's why I asked. Also, ewriter has a read efuse function to test for blown efuses, presumably, as we can see from the efuse.sh script. Does this make any sense @Skel40 ?
I'm not taking this as a criticism as I forgot to mention this from my post. It burns after rebooting. You don't need to unlock if you don't want to. I'm not telling you that you need to unlock again which is my fault on my part. And yes it does make sense what you're saying.
 
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Sus_i

Senior Member
Apr 9, 2013
1,265
516
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.
Here is the stock one, flash magisk behind it and it is prerooted. ;)
There isn't any efuse-burner-stuff in the ota-file (only 6277 and up).
 
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puppinoo

Senior Member
Jun 14, 2008
167
31

nomobytes

Member
Aug 2, 2017
36
30
theManhattan
Currently, ewriter 0 0 1 returns with
Code:
mantis:/data/local/tmp # ./ewriter 0 0 1
efuse hex:
00
status code = 0, which means "eFuse is ok."
So I assume that I could invoke the exploit (mtk_phone mode) if I had to. Also I continue to block updates most of the time, unless I'm checking for system components/os updates.
 
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ilavu

Member
Mar 19, 2007
10
1
Hello Friends,
It's been a long time to XDA. I have one fire stick 4k with debloted rom (ftvs4kdebloated_6.2.7.3_V1.zip) installed and working good but not the prime video. Is this rom can be installed via TWRP to update? Any special step need before or after? I dont want to brick.
Thanks
 
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dennis148

Member
Aug 15, 2008
40
5
i disabled all amazon services that dont break any essential functions. now i have some blank rows in my homescreen where usually would be some ads. any recommendation for a nice permanent launcher replacement? google tv would be awesome ;)
 

Skel40

Senior Member
Dec 27, 2019
286
137
Moto G 5G
Hello Friends,
It's been a long time to XDA. I have one fire stick 4k with debloted rom (ftvs4kdebloated_6.2.7.3_V1.zip) installed and working good but not the prime video. Is this rom can be installed via TWRP to update? Any special step need before or after? I dont want to brick.
Thanks
Here's my downgraded roms with OTA patches to completely remove software updates from updating if you want to update which is found here:


Here's the Prime Video APK if yours is having issues:

 
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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!