yashsingh1/xdaforums huggingface dataset:
[Kindle Fire HDX 7" & 8.9" General] Samson Lau:
Hi Friend,

Is it possible to make it can roll back from 4.5.3 ~ 4.5.5 to 4.5.2 directly?
[Kindle Fire HDX 7" & 8.9" General] ONYXis:
Hi. No, its impossible.
[Kindle Fire HDX 7" & 8.9" General] loughrey101:
yeah, you can rollback from 4.5.5.1 as I did the other day with a new Fire HDX 7. Just when you do roll back to 4.5.2 just remember to block OTA updates to avoid having to do this all over again.
[Kindle Fire HDX 7" & 8.9" General] Zerocrazy83:
issue kindle

Hi yesterday i rolled back my kindle but i forgot to turn the wifi of and my kindle was updating and then the screen went totally off and i tried to charge it but nothing can someone help me i tried to press the button for 30 secs and 2 minutes while charging and nothing help please thanks
[Kindle Fire HDX 7" & 8.9" General] DB126:
Your device is permanently bricked with no possibility of recovery short of replacing the mother/daughter boards. Sorry for your loss.
[Kindle Fire HDX 7" & 8.9" General] Zerocrazy83:
Oh gosh, thanks but i have one more question 30 mins ago i plugged into the pc and it sounds like if i connect something and i plugged again and it sounds the same, thats its a part of the brick? Thanks a lot
[Kindle Fire HDX 7" & 8.9" General] DB126:
It will still make a sound when you tether it (connect HDX to computer via USB cable) and the battery may charge - but you will not be able to communicate with it.
[Kindle Fire HDX 7" & 8.9" General] Bowhunter3:
Minimal ADB and Recognition

So I am rolled back to 4.5.2 successfully from 4.5.5.1 (It does work on Kindle Fire HDX 7" Thor ) (Yay!) .. I am now in the process of installing ES file explorer, but the minimal adb thing can't find my kindle. I keep reading that I need drivers? Where can I find these, and what to do with them so my computer can communicate with my kindle over usb?
[Kindle Fire HDX 7" & 8.9" General] EncryptedCurse:
Have you actually enabled ADB access in the device settings?

https://developer.amazon.com/public...ing-up-the-ADB-Driver-for-Kindle-Fire-Devices
[Kindle Fire HDX 7" & 8.9" General] Bowhunter3:
Yes. I am ADB Debugging Enabled on my kindle. All of the computer stuff I have not done though. I could not find any information on it, and the source you gave me uses the Android SDK which I don't have. I am using the Minimal ADB client.

**EDIT** I just side loaded it over wifi..Kingroot, Check. Safestrap, Check. CM11, Check....WOOT. Thanks everyone on these forums. This is awesome!!.....Once again, this worked coming from 4.5.5.1 on Thor.
[Kindle Fire HDX 7" & 8.9" General] rb11701:
I have a strange issue. I have done this whole process a few times with no problems. Now, I have a HDX 7" with 4.5.5.1 on it. When I try to roll back to 3.2.8, it gets halfway through the update and says "Error!". Once I reboot it, it goes back to 4.5.5.1 and erases the .bin file. I was received with 4.5.2 and updated to 4.5.5.1. Had issue all the way up at every update point. Reaches halfway and gives the error.

It's not the end of the world as it will be mainly a media consumption device for my son but I would love to know why I can't do this.

Thanks in advance!
[Kindle Fire HDX 7" & 8.9" General] DB126:
Thoughts:

- From 4.5.5.1 try doing a 'factory reset' from the native device recovery menu. This is one of the few cases where a native factory reset is actually useful. Note you will loose personal apps/data with this procedure. Then try the rollback again.

- Validate the integrity (MD5) of the 3.2.8 bin using ES File Explorer or a similar tool.

- Another user reported sucessful rollback from 4.5.5.1 to 3.2.8. However, 4.5.5.1 is a relatively new release that may present some difficulties with the existing rollback files. Also possible experiences will differ depending on device type; I believe the other user had an Apollo (HDX 8.9")
[Kindle Fire HDX 7" & 8.9" General] rb11701:
I couldn't get the rollback to finish updating at 4.5.3, 4.5.5 or 4.5.5.1. Same "Error!" message,

What should the MD5 number be? I used the same file I had always used before and also tried to re-download. Really strange. Thanks for the quick reply!
[Kindle Fire HDX 7" & 8.9" General] AnyAndroidOSWins:
I wondered if 4.5.5.1 was an ant-rollback update, I guess I was right. :(
[Kindle Fire HDX 7" & 8.9" General] rb11701:
That's the thing. This "Error!" Message greeted me on all the versions i tried. Stock 4.5.2, 4.5.3, 4.5.5, 4.5.5.1. On every version of the os this happened. Nothing to do with 4.5.5.1.

I checked md5, that's correct. I did z factory reset from recovering menu on 4.5.5.1, same result. Really strange. Update gets halfway done and craps out. Same spot everytime. Every version.

It's been a while since I did one but I can't imagine I've forgotten but is there any prep work outside of getting the correct files?

If we flash to 4.5.2 image in op without being on 3.2.8 will that brick the device?
[Kindle Fire HDX 7" & 8.9" General] IVIatthew:
Will this work on kindle fire hd 6 4th gen? I have version 4.5.5.1

Will this work on kindle fire hd 6 4th gen? I have version 4.5.5.1
[Kindle Fire HDX 7" & 8.9" General] DB126:
Only applicable to 3rd gen HDX devices (different rollback files for 7' and 8.9" models). Nothing for HD line.

---------- Post added 02-04-2016 at 12:09 AM ---------- Previous post was 02-03-2016 at 11:54 PM ----------

FireOS prohibits rollbacks unless it is a specially crafted image. I would not expect the 4.5.2-4.5.5 rollback attempts to work since those are standard image files. Given the same error appears for the 3.2.8 file:

- verify you are using a rollback file (linked in OP) and not a standard image

- and the right file for your device (thor=7"; apollo=8.9"); 3rd gen only (no saturn)

- it's possible 4.5.5.1 introduced anti-rollback protection; I think that unlikely

- most likely explanation is corruption in the 4.5.5.1 build that can not be remedied by a factory reset

- was the device previously rooted before being updated to 4.5.5.1?
[Kindle Fire HDX 7" & 8.9" General] rb11701:
As far as I know, it has not been rooted. I got the kindle with 4.5.2. Since its been a good amount of time since I did this, I attempted to roll back to 3.2.8 and begin my process. That's when I first encountered this error. I was using the rollback file in OP as I always do. The update gets verified and halfway through the installation, it gives the error. I then started the update process. I went to 4.5.3 and tried the 3.2.8 file. Then went up to 4.5.5 etc etc. At each update step I tried the 3.2.8 file and received the error. Yet the OTA's worked fine.

I have done nothing different except using a different kindle. It is a HDX 7. I am using the Thor file. Tried Factory reset. Always gets the error. It is LTE model but the others (this is my third) were as well.

The only other difference, is that I do not keep a SIM card in it. I tried using LTE one from my phone but still got errors. Really strange.

Thanks for all the help!
[Kindle Fire HDX 7" & 8.9" General] DB126:
Curious why you tried to rollback from 4.5.2 (initial starting point) as ultimately you would have ended up at the same place - 4.5.2.

There is likely a corruption in your build that is causing the 3.2.8 installer to error out. The incremental OTA updates layered on to 4.5.2 do not replace the entire OS...only components that changed.

By upgrading to 4.5.3 (and beyond) you lost the ability to reinstall a clean version of 4.5.2 via Safestrap. That likely would have solved the problem.

Can't immediately think of a solution. Appears you are stuck on unrooted 4.5.5.x with no upgrade/rollback path other than those delivered through incremental OTAs.
[Kindle Fire HDX 7" & 8.9" General] rb11701:
Yeah, that is the million dollar question. Not really sure to be honest. I think I was under the impression I need the 4.5.2 update from here in order to root. Thus my need to go to 3.2.8, But even at that point (on 4.5.2) I got the error rolling back. Something is wrong somewhere. Like I said, not the end of the world but still, kinda sucks. Thanks!
[Kindle Fire HDX 7" & 8.9" General] rb11701:
So I ran kingroot on the 4.5.5.1. It said root access unavailable. Then it said root solution available, just try it. So I did. And what do you know, root on 4.5.5.1. I was able to rename the Ota apk via es file explorer. I was able to install safe strap and run it. When I get hone I going to try to install the recovery and load the nexus Rom.

Very strange. Only thing I can think of is that it was already rooted? I assumed the ota would break the root but..... Anyways, 4.5.5.1 rooted via kingroot. I'm not involved enough in this stuff to explain the how's. Lol.
[Kindle Fire HDX 7" & 8.9" General] DB126:
Whoa! That's huge. Can anyone else confirm Kingroot works on 4.5.5.1? I have yet to hear of root surviving OTA past 4.5.4. More importantly, if 4.5.5.1 can be directly rooted it opens a whole new suite of options for those with 3rd gen devices that will not be receiving FireOS v5.

Not surprised you were able to install the Safestrap v4 apk. Be cautious installing the recovery and custom roms; if something goes wrong you may not be able to recover. Previous attempts to use Safestrap v4 on rooted 4.5.3 proved unsuccessful.
[Kindle Fire HDX 7" & 8.9" General] rb11701:
Hmm. Did that fail attempt result in a brick? I would have to check the version of kingroot I used. Wasn't the must recent I know that.

Can a backup be made in safesttrap in case it doesn't work?
[Kindle Fire HDX 7" & 8.9" General] DB126:
I would encourage you not to install Safestrap v4 recovery or (if successful) flash custom roms until more is known. A safestrap backup is useless if your device won't boot or you can't gain access to Safestrap recovery. It is not a self-contained recovery like twrp.
[Kindle Fire HDX 7" & 8.9" General] rb11701:
Him. I wonder if I undo root if I can step back without getting the error. Most likely not I would imagine.

Thanks
[Kindle Fire HDX 7" & 8.9" General] DB126:
Why would you want to do that? Patience - let's see what unfolds. It takes time for the tortoise to climb over all the dead hares but eventually he crosses the finish line :)
[Kindle Fire HDX 7" & 8.9" General] claywd:
Confirmed root access via kingroot on fire os 4.5.5.1. Thinking about trying out twrp before safestrap.
[Kindle Fire HDX 7" & 8.9" General] EncryptedCurse:
It likely won't work. Make sure to backup the stock recovery beforehand.
[Kindle Fire HDX 7" & 8.9" General] XxD34THxX:
Nice. I'll probably root now, block OTA, and see how the new Update comes out.. Thanks for the heads up.
[Kindle Fire HDX 7" & 8.9" General] DBCAB:
Confirmed just did this on my kindle fire hdx 7inch 4.5.5.1 stock machine worked perfect am rooted
[Kindle Fire HDX 7" & 8.9" General] DB126:
Won't work; bootloader remains locked. Signature forging allowed twrp to be flashed on early v3 devices. Amazon closed the bootloader loophole in FireOS v3.2.4.

As previously noted I would approach Safestrap with caution. The apk will likely install fine but recovery is another matter. Search through the Safestrap v4 thread to learn the outcome of others who tried this on 4.5.3. Don't recall if it resulted in a brick or just didn't take.

More interesting...but down the road:

- does it work for both Thor and Apollo. Possibly even Saturn (although I'm told 5.1.1 can also be rooted)?

- will amazon attempt to close the vulnerability with a quick successor to 4.5.5.1. Or did they quietly hand a 'gift' to owners of an orphaned device.

- can Safestrap v4 be adapted/certified for use with FireOS v4.5.5.1?

- will development/exploit efforts get rekindled now the entire universe of 3rd gen devices can potentially take advantage of the capability? The 3.2.8/4.5.2 dance was a high barrier for many; dozens of devices bit the dust in the process.
[Kindle Fire HDX 7" & 8.9" General] XxD34THxX:
before I start up kingroot, whomever confirmed it, were you on saturn? I don't want to brick again. That said, I let it go to 20%(said it had a way to root) before I stopped it...
[Kindle Fire HDX 7" & 8.9" General] ggow:
- Thanks [MENTION=1434990]dave12[/MENTION]6 for the heads up

- Will check out Safestrap on this version
[Kindle Fire HDX 7" & 8.9" General] DB126:
No indication (yet) this works on Saturn. Risk should be low but not zero. Or just wait for FireOS v5 (likely 5.1.1) to arrive which can be rooted but no Safestrap or custom roms (yet).

---------- Post added at 08:53 AM ---------- Previous post was at 08:45 AM ----------

It now appears FireOS v4.5.5.1 can be rooted (here) on 3rd gen devices; no need to undertake a risky manual rollback. Testing is underway; watch for further updates in the HDX forums.
[Kindle Fire HDX 7" & 8.9" General] XxD34THxX:
Kingroot worked even though I canceled it lmao
[Kindle Fire HDX 7" & 8.9" General] DB126:
Might have contributed to your current soft-brick. These types of operations should never be aborted mid-flight.
[Kindle Fire HDX 7" & 8.9" General] cjac2879:
First off I want to thank all the devs here.. I have been a lurker for a long time, always find my answers and fix my problem.. Kudos

Recently i dove into my first root/rom I managed to root my hdx 7 (3rd gen) and get it running CM11.. Love it, works great! my HDX was running 4.5.5.2, so I did the rollback procedure I found on these forums using the captured 3.2.8 and then manually upgraded to 4.5.2. I then managed to flash cm11 and it works great.. I want to go to cm12 or cm13, but am not sure if I can given the rollback/upgrade procedure I went through.. Is it possible? I rushed a flash of cm12 but it didnt work and im not sure if its just not possible or if i did it wrong since it was late and I had read alot at that point.. Any help obviously is hugely appreciated!
[Kindle Fire HDX 7" & 8.9" General] DB126:
Congrats on your successes to date. Lot of places things could have gone wrong; you managed to avoid those. :)

At present you can only use Nexus v4 or CM11 with Safestrap v4. No Lollipop or Marshmallow roms so no CM12/13. Might change in the future but that's the story today.
[Kindle Fire HDX 7" & 8.9" General] cjac2879:
Thanks, was it because I went back up to 4.5.2 as opposed to staying on the rollbacked 3.2.8?
[Kindle Fire HDX 7" & 8.9" General] DB126:
With Safestrap for HDX you can only use roms that 'align' with the underlying version of FireOS. 3.2.8 (final release of v3) is based on Jelly Bean so you are limited to JB roms (Nexus v2). FireOS v4 has KitKat roots as does Nexus v4 and CM11. It's a little more involved that (kernel is what matters) but hopefully explanation makes sense.
[Kindle Fire HDX 7" & 8.9" General] cjac2879:
Cool, makes sense. Thanks for the info..I'm loving cm11, so I'm happy!
[Kindle Fire HDX 7" & 8.9" General] vangyi:
Could I place it anywhere in the internal storage?

---------- Post added at 03:11 AM ---------- Previous post was at 03:05 AM ----------

Can I place it anywhere in the device or is there a specific folder? Thank you
[Kindle Fire HDX 7" & 8.9" General] DB126:
If viewing storage from a host (eg: Windows, Mac) just place in 'internal storage'; not inside a folder. If positioning from device (eg: via ES File Explorer) should go in the root of sdcard folder.

You should also download the 4.5.2 update file and place it in a temporary folder within internal storage (or a temporary folder created in the root of sdcard)

Once on 3.2.8 don't forget to keep wifi disabled and airplane/flight mode engaged. Don't register the device on first boot or enable wifi. Just move the 4.5.2 file previously downloaded to the root of sdcard and check for updates. If your device doesn't "see" the 4.5.2 file reboot and try again.
[Kindle Fire HDX 7" & 8.9" General] claywd:
Safestrap worked great... Got Google now, play store, play services etc working just like I have it on the fire phone. The only thing I don't have is wallpaper. Lol
[Kindle Fire HDX 7" & 8.9" General] DB126:
To put this in context, I believe you are running FireOS v4.5.5.1 with GAaps flashed via Safestrap v4. Interesting approach. Most use Safestrap v4 to flash a custom rom. Flashing GAaps over FireOS v4 is a nice extension for those who prefer stock. Be interesting if it remains stable as historically FireOS v4 and GAaps (specifically Play Services) have not been good bedfellows.

Be sure to block OTA! Although your 3rd gen shouldn't be receiving FireOS v5 there have been recent rumors that suggest it may yet be an outside possibility. Really any OTA with Safestrap v4 could be problematic, even if only a service tweak to v4.
[Kindle Fire HDX 7" & 8.9" General] vangyi:
It says permission denied when I try to move the update to the root folder.
[Kindle Fire HDX 7" & 8.9" General] claywd:
Yup, you are correct on all accounts but one. Now I can switch back forth between the Amazon launcher and Google now launcher since some people in the house prefer the simple Amazon interface.

I used safestrap to make a backup and then flashed known working version of Gapps and literally everything is working after the Gapps updated.

Kingroot retains root after updates, which I've performed once so far since rooting, so safestrap is easily reinstalled. In the case that fire OS 5 is released, everything gets over written and I start from scratch.

This is basic rooting 101. Lol pretty safe for anyone who wants to try.
[Kindle Fire HDX 7" & 8.9" General] DB126:
Make sure you are targeting the proper folder; /sdcard is not normally protected.

---------- Post added at 12:23 AM ---------- Previous post was at 12:17 AM ----------

Quick notes:

- Safestrap v4 emulates TWRP recovery but is not the same beast (less powerful from a recovery perspective)

- OTA caution remains; as long as you are controlling the dials/knobs (and understand them) all should be well

- assume no secondary slots were created; stay away from those on Safestrap v4. Will only bring heartache :)
[Kindle Fire HDX 7" & 8.9" General] Cl4ncy:
Seems you didn't understand what's meant here. It just means \sdcard - that's it. That's the folder you get e.g. in Explorer by accessing the HDX via USB, i.e. don't open any other directory.
[Kindle Fire HDX 7" & 8.9" General] sandman512:
Ok, so just tried to do this from 4.5.5.1 and got an error message that the file is not valid. Any thoughts?

Thanks!

PS: Tried with WiFi on and off.
[Kindle Fire HDX 7" & 8.9" General] ONYXis:
Only HDX 7
[Kindle Fire HDX 7" & 8.9" General] roadshow1997:
What a pity!

I really want root my HDX 8.9 LTE!

Do you have image of HDX 8.9 for downgrading?
[Kindle Fire HDX 7" & 8.9" General] ONYXis:
http://xdaforums.com/kindle-fire-hdx/general/apollo-extract-rollback-downgrade-image-t3049539
[Kindle Fire HDX 7" & 8.9" General] santiga:
I have KF HDX v4.5.2.

What I have to do exactly ? Please.

---------- Post added at 06:31 PM ---------- Previous post was at 06:29 PM ----------

What root app do you mean, can you send me, please ?
[Kindle Fire HDX 7" & 8.9" General] ONYXis:
What are you want exactly? your firmware is rootable! just root, prevent ota, install gapps if you wish.

All you need at this thread - http://xdaforums.com/kindle-fire-hdx/general/tut-disable-ota-4-5-2-install-gapps-t3043550 .

root - http://xdaforums.com/showpost.php?p=59156161&postcount=56
[Kindle Fire HDX 7" & 8.9" General] santiga:
Ah yes, sorry, I haven't seen the apk file. :)

---------- Post added at 06:58 PM ---------- Previous post was at 06:39 PM ----------

I had 4.5.3, down to 13.3.2.8 and later installed 4.5.2

Now, I have used cve20147911.apk but seems to not work. Example ES File Explorer cannot obtain root acces.
[Kindle Fire HDX 7" & 8.9" General] dazza7111:
took a few attemps click twice and check dev options also star SuperSU
[Kindle Fire HDX 7" & 8.9" General] santiga:
Yeah, a lot of times. Now SuperSU works, but any file manager, I don't understand.
[Kindle Fire HDX 7" & 8.9" General] dazza7111:
use es explorer check settings make sure root is on and show hidden files
[Kindle Fire HDX 7" & 8.9" General] santiga:
I hace told you, any file manager works...
[Kindle Fire HDX 7" & 8.9" General] dazza7111:
as long as it has root access like root explorer
[Kindle Fire HDX 7" & 8.9" General] santiga:
Some reboot more, and now file manager works.
[Kindle Fire HDX 7" & 8.9" General] Silver_Wire:
i cant seem to downgrade i keep getting invalid update error, Any other steps?
[Kindle Fire HDX 7" & 8.9" General] dazza7111:
Download on laptop then copy across?
[Kindle Fire HDX 7" & 8.9" General] ONYXis:
did you turn off wifi? and check that fully file downloaded.
[Kindle Fire HDX 7" & 8.9" General] vince25949:
Seem like my device brick :(

I do every step one by one,4.5.3-->3.2.8-->4.5.2-->root,and every step worked.

But after all this,"Setting"fiction can't work,I think maybe restart can help,so i do it.

And now,my device(HDX7) is stuck on the "Kindle fire" opening word.:crying:

Can anybody help?Thx so much.:mad:
[Kindle Fire HDX 7" & 8.9" General] ONYXis:
Grey logo or colored?

what exactly you did before this?
[Kindle Fire HDX 7" & 8.9" General] vince25949:
"Kindle"is grey,and "fire"is gold with shining.

Before this,I Delete cve20147911.apk after root.

and I change [/system/priv-app/DeviceSoftwareOTA.apk]and[/system/priv-app/DeviceSoftwareOTAcontract.apk](I'm not sure this is right name,But I remember it's name clude contract)this two file's name to "bbb.ddd" something like this.

Then I found"Setting "fiction is not work,so I restard,and it stuck on the opening word like what i said on the first.

do you think it's because of I change name of "DeviceSoftwareOTAcontract.apk" ,I think now,my device is not a real brick,because when i connect it to my computer,there is a warning tone,and my assistant software on pc can found HDX7 and r/w data.

Sorry for my english is not very good,If need any detail else,Pls tell me.

and Thx ONYXis so much for reply and what you do for HDX7 user.
[Kindle Fire HDX 7" & 8.9" General] FotixChiang:
factory resetted, correct md5, and failed again and again.

every time, the progress bar stopped about half position of total.
[Kindle Fire HDX 7" & 8.9" General] ONYXis:
yes its because renaming DeviceSoftwareOTAcontract.apk

do you familar with adb?

easiest way install apex launcher through adb and block kindle home launcher

adb install path-to-apex/apex.apk
adb shell
pm block com.amazon.kindle.otter

because you cannot su before hard reset (not recommended)

you will boot into os , return name to DeviceOTAContracts.apk

and return kindle launcher

adb shell
pm unblock com.amazon.kindle.otter
reboot

do you have stock recovery? what version of your firmware? did you wifi off?
[Kindle Fire HDX 7" & 8.9" General] DB126:
You are playing with fire (no pun intended). Had this worked and WiFi was enabled the device would brick on the next reboot. To my knowledge an OTA from 4.5.5.1 has not been attempted so it's possible the 3.2.8 rollback file will not work.

Thoughts:

- make sure you have the right file (different files for Apollo and Thor)

- perform a factory reset from stock recovery (<power>+<vol-up>) and then try again

- be sure to keep WiFi off

Since your ultimate goal is to install Safestrap v4 you may want to see if SS recovery works after doing a factory reset before attempting a rollback. Also make sure you can communicate with the device via tether as you can not enable WiFi while on 3.2.8. You will need some mechanism for moving files onto the device for the 4.5.2 upgrade (or preload them in advance).

Warning: there is a small risk of catching a brick after performing a factory reset. Doesn't happen often and is most common with devices that already have issues. You will loose most apps and all personal data. Go in with eyes open.
[Kindle Fire HDX 7" & 8.9" General] sandman512:
Davey,

Sorry to keep you going on both forums. I will try this again. I greatly appreciate help... THANKS!

PS: Tried again, error message, update failed because file is not valid.

Tried a factory reset, install SS, no luck. I'm close to throwing in the towel. LOL!