Downgrading my kindle fire - Fire HD 6 and 7 Q&A, Help & Troubleshooting

I installed Fire OS 5 developer preview on my Kindle fire hd 7 4th gen
can anyone tell me how to downgrade it back to 4.5.5 ?

First unsubscribe from the developer updates in the amazon dev center, then in the root guides, when you do the ADB sodeload you are re-flashing 4.X.X
Sent from my KFASWI using Tapatalk

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Fire HDX 8.9" 4.5.5 (SATURN - 4rd Gen/2014) - HELP

Hello,
My Device:
Fire HDX 8.9" (4rd Gen/2014)
Codename: SATURN
Version: 4.5.5
1) Is it possible to root it on 4.5.5? How to proceed?
2) Is there a stable CyanogenMod and which version?
Sorry, but I don't get it as most threads refer to the 3rd Gen and older OS versions. Thank you very much.
WebDesZ said:
Hello,
My Device:
Kindle Fire HDX 8.9" (4rd Gen/2014)
Version: 4.5.5
1) Is it possible to root it on 4.5.5? How to proceed?
2) Is there a stable CyanogenMod and which version?
Sorry, but I don't get it as most threads refer to the 3rd Gen and older OS versions. Thank you very much.
Click to expand...
Click to collapse
At present there are no proven root/rollback/rom options for 4th Gen HDX models running FireOS 4.5.5. You'll find some vids around stating all versions of FireOS v4 can be rooted (only valid on 3rd gen devices through 4.5.3) but you will likely end up disappointed or owning an expensive brick. Given 4.5.5 has been out awhile with no known root I think the best hope lies FireOS v5 assuming it gets rolled out to 4th gen devices. That's were people will be looking for vulnerabilities and developing exploits.
If you absolutely need root and/or CM I would seriously consider returning your device and going with something else.
Davey126 said:
At present there are no proven root/rollback/rom options for 4th Gen HDX models running FireOS 4.5.5. You'll find some vids around stating all versions of FireOS v4 can be rooted (only valid on 3rd gen devices through 4.5.3) but you will likely end up disappointed or owning an expensive brick. Given 4.5.5 has been out awhile with no known root I think the best hope lies FireOS v5 assuming it gets rolled out to 4th gen devices. That's were people will be looking for vulnerabilities and developing exploits.
If you absolutely need root and/or CM I would seriously consider returning your device and going with something else.
Click to expand...
Click to collapse
Talking to Amazon Reps, the confirm it should be coming "soon"... V 5 that is
Thank you both very much for this information. Shouldn't have updated my Fire HDX 8.9 to 4.5.5 (KingRoot can be used on 4.5.3 and below)
But I am very happy, that the annoying ads have vanished.
Code:
>$ adb devices
>$ adb shell
>$ pm block com.amazon.kindle.kso
Package com.amazon.kindle.kso new blocked state: true
>$ reboot
Es tut mir leid, leider liegen mir zurzeit keine Informationen vor, wann der Fire HDX 8.9 das neue Software Update auf Fire OS 5 Bellini bekommen wird.
Gerne leite ich Ihre Anfrage an unsere zuständige Abteilung weiter. Ich bitte Sie ein wenig um Geduld.
- Amazon Support
Click to expand...
Click to collapse
Means: They still have no clue how how long it will take until Fire OS 5 is available fore the Fire HDX 8.9 (SATURN)
WebDesZ said:
Means: They still have no clue how how long it will take until Fire OS 5 is available fore the Fire HDX 8.9 (SATURN)
Click to expand...
Click to collapse
FYI - more banter on this topic (link).
Hey Guys,
I got my new HDX 8.9 from Amazon today (should be 2014 with SD805 and 64GB/Wifi) but my OS is 4.2 with an Update waiting to 4.5.3 (just those numbers in the settings, nothing like 14.4.....). Is it possible to unlock the bootloader and get a new Custom Rom with 4.2? I learned FireOS is utterly useless for me...
Thanks,
Hermelinmaster
BTW: First post, but i use XDA since Galaxy S2 root and Custom Rom-Tutorials came up. Great Forum!
Hermelinmaster said:
Hey Guys,
I got my new HDX 8.9 from Amazon today (should be 2014 with SD805 and 64GB/Wifi) but my OS is 4.2 with an Update waiting to 4.5.3 (just those numbers in the settings, nothing like 14.4.....). Is it possible to unlock the bootloader and get a new Custom Rom with 4.2? I learned FireOS is utterly useless for me...
Thanks,
Hermelinmaster
BTW: First post, but i use XDA since Galaxy S2 root and Custom Rom-Tutorials came up. Great Forum!
Click to expand...
Click to collapse
On your device (4th Gen HDX) you can not unlock the bootloader nor utilize Safestrap to host a custom rom (Safestrap v4 only works on 3rd gen HDX devices). Unfortunately, your only option is FireOS. Might as well let it upgrade as there is no benefit to staying on 4.2. It will eventually update to 4.5.5 which appears to be the terminal sub-release in the 4.x series.
If you are thinking there must be some other path there isn't (or at least one that has been widely published/noticed). No root option either.
If Amazon follows through and ports FireOS v5 to the HDX you will have an environment closer to native Android and potentially a new vulnerability that can be leveraged to install a different ROM . Until then you can soften the FireOS v4 experience by sideloading apps and/or utilizing a 3rd party marketplace like 1Mobile.
Davey126 said:
Until then you can soften the FireOS v4 experience by sideloading apps and/or utilizing a 3rd party marketplace like 1Mobile.
Click to expand...
Click to collapse
The Amazon Marketplace and some sideloaded Apps are for most of my app-needs enough but 1. I need Widgets and 2. I need some Google-Apps. And those seem to cause some trouble.
Think I just wait for End of January and send it back or sell it (got it quite cheap, now I know why) if there are no new methods for Custom Roms by then...
Thanks for your help.

noob question on kindlefire hd 7 & 8.9 (3rd generation)

I have read a number of posts and youtube video's and want to ask a Question Pertinant to me,
I have a Kindle fire HD 7 & 8.9 both running 4.5.5 I want to ultimately want to root both so I see the following steps,
first go to the newer Developer 5.0.x version,
2nd Down grade to 4.5.3 which I understand has the root vunerability
3rd then run some thing like Kingroot to root the device
4th install google playstore
lastly is there a boot loader that works with this version of the Kindle fire ?
as twrp's web site only list the 1st gen support
I realize there would be things in between
macphoneguy said:
...Down grade to 4.5.3...
lastly is there a boot loader that works with this version of the Kindle fire ?
Click to expand...
Click to collapse
No use [RECOVERY][STOCK][LOCKED] Safestrap v4.0.1 by ggow
and
[Index] Kindle Fire HDX 7" & 8.9" (3rd Gen/2013)
---------- Post added at 05:49 PM ---------- Previous post was at 05:37 PM ----------
You have?
Kindle Fire HDX 7": 7" screen, Power and volume buttons on the back. Front-facing High Definition camera
Model #:KFTHWA (WAN) / KFTHWI (Wi-Fi)
and
Kindle Fire HDX 8.9" - Power and volume buttons on the back - Front- and rear-facing HD cameras
Model # KFAPWA (WAN) / KFAPWI (Wi-Fi)

[Q] BFI Player not working on hd6 4th gen.

I'm trying to view content from https://player.bfi.org.uk (which employs the hook player) but it keeps throwing up an error code "2006"?
My hd6 is stock - unrooted fire os 4.55.
I'm using the same hook player app on my nexus7 without issue so I'm guessing its a fire OS problem. any advice or links to fixes welcome.
gascomm said:
I'm trying to view content from https://player.bfi.org.uk (which employs the hook player) but it keeps throwing up an error code "2006"?
My hd6 is stock - unrooted fire os 4.55.
I'm using the same hook player app on my nexus7 without issue so I'm guessing its a fire OS problem. any advice or links to fixes welcome.
Click to expand...
Click to collapse
gascomm,
Did you try to update your Fire HD 6 to lollipop(Fire OS 5)? More Android apps are supported on Fire OS 5. The latest version is 5.3.1.1
hammaad5 said:
gascomm,
Did you try to update your Fire HD 6 to lollipop(Fire OS 5)? More Android apps are supported on Fire OS 5. The latest version is 5.3.1.1
Click to expand...
Click to collapse
Indeed I did try a few os5 updates before giving in .. rooting and flashing cm12.1 to my hd6. I truly disliked the fire is. thanks for the reply tho

No Root GAaps on FireOS 5 - Saturn (4th gen)

Noticed the following post in the 2015 Kindle Fire forum. If confirmed serves as good news for Saturn owners once upgraded to FireOS 5:
Installing Google Framework/Playstore without Root 5th Gen Amazon Fire 7in 2015 ONLY
"Works flawlessly on HDX 8.9 4th gen saturn on FireOS 5.1.1. Ran the bat, restart device and voila all is well"​
Hopefully can leverage knowledge from the 2015 Fire to obtain root on HDX build of FireOS 5.x and open the potential for custom roms. That said, rootless Playstore access is a nice start.
Edit - related discussion in this thread:
http://forum.xda-developers.com/showthread.php?t=3204316

Revert Amazon Kindle Fire HDX 8.9 4 gen on fire os 4

Hello,
I have HDX 8.9 4gen with lastest versions of fire os (5.6.1).
It's so laggy and i want revert to previous version of fire os.
Is there any solution? I can't find here.
arshileus said:
Hello,
I have HDX 8.9 4gen with lastest versions of fire os (5.6.1).
It's so laggy and i want revert to previous version of fire os.
Is there any solution? I can't find here.
Click to expand...
Click to collapse
Nope. HDX devices do not support rollbacks w/o root. As you likely know root is not an option given your current FireOS build. Best option is to perform a factory reset (removes ALL personal content) which may or may not improve responsiveness. HDX has plenty of muscle to handle FireOS 5.6 and the various pre-installed apps that come with it. Likely a config or content interaction issue.

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