yashsingh1/xdaforums huggingface dataset:
[Kindle Fire HDX 7" & 8.9" General] DB126:
No (for multiple reasons). Unlock the bootloader instead for a far more robust solution including access to advanced/modern ROMs based on Android 7.1. See here for an outline of the procedure.

Please note: Unlock procedure is not for the faint of heart. You can easily soft (and possibly hard) brick device if instructions are not followed carefully. The ride will be easier if you have some familiarity with adb, fastboot and the Windows command line (or OSX/Linux equivalents). Reading is your friend; make good use of the copious material that has already been posted. Ask targeted questions as needed. Good luck.
[Kindle Fire HDX 7" & 8.9" General] bobcat131:
[MENTION=5488402]Davey126[/MENTION] Are there any Android 8-based custom roms available or in the making for the Thor and Apollo?
[Kindle Fire HDX 7" & 8.9" General] DB126:
I believe [MENTION=5749760]ggow[/MENTION] is working on lineage 15.x.
[Kindle Fire HDX 7" & 8.9" General] shadow16g:
Hi, for a very special reason I need this firmware. unfortunately i cant find it anywhere anymore. can someone please send it to me
[Kindle Fire HDX 7" & 8.9" General] DB126:
What firmware? FireOS 3.2.8 rollback-OTA? For which device? I probably have one or both archived in a backup somewhere but need further explanation to warrant the search/recovery effort.
[Kindle Fire HDX 7" & 8.9" General] shadow16g:
Yes, the 3.2.8 rollback for the HDX 7inch 3rd gen Thor.

Basically my kindle one day stopped being recognised by every computer possible.

Back then i used this firmware to try reinstall the firmware (since i was already using the last release) to see if it had something to do with the kindle firmware.

I did that by downloading the firmware directly to the device.

After the rollback I installed the firmware 4.5.2 but I believe I installed the wrong one because when booting looks different and just says kindle fire hd instead of hdx.

Since it didn't fix my problem I didn't give much thought and I bought a new tablet.

Now circumstances require me to use the kindle again and I want to try to install the original and most recent firmware.

The problem is that when I download the original firmware and put it in the root of the device, it is not recognised as an update.

That is the long reason why I need this firmware again

Thanks in advance
[Kindle Fire HDX 7" & 8.9" General] Yousucks2:
I found it on a Baidu Chinese page, if you still want it , give me a couple of hours to complete the download and reupload it to a decent host servers, im getting around 100kb/s speed for a 812mb Image

UPDATE:

done it here is the link

http://www.mediafire.com/file/hj7p7qu4rqcx8pj/mod-update-kindle-thor-13.3.2.8_user_713328020.bin

I cant check if its legit ,because i dont have a stock kindle to try a downgrade

Do it at your own risk, hard brick its always a possibilty doing this process, im not assume any consecuences or responsability
[Kindle Fire HDX 7" & 8.9" General] shadow16g:
Thank you so much :D

U are a legend
[Kindle Fire HDX 7" & 8.9" General] tramCS:
Hello.

I'm looking for a tutorial*** for Linux, not for Windows. Do they exist ?

THX

Christian

*** Kindle Fire HDX 7 Zoll ( Thor )
[Kindle Fire HDX 7" & 8.9" General] DB126:
Use the "1 click script" which is geared toward Linux hosts. You will need to PM the developer for a copy; it can not be downloaded from the thread. Do NOT under any circumstances roll your device back to FireOS 3.2.8. That method is now obsolete and highly susceptible to spontaneous bricks.

https://xdaforums.com/kindle-fire-hdx/general/multi-platform-1-click-bootloader-t3241014
[Kindle Fire HDX 7" & 8.9" General] tramCS:
Hello Davey126.

Thanks alot.

I use a LINUX VM, because only the fastboot-connect works here.

Is there perhaps a Step-by-step guide for Linux?

Best Regards

Christian
[Kindle Fire HDX 7" & 8.9" General] DB126:
Nope. Find a different host.
[Kindle Fire HDX 7" & 8.9" General] tramCS:
Hello Davey126.

Thanks a lot . 1-Click was my friend.

THX

Christian
[Kindle Fire HDX 7" & 8.9" General] booji43:
anyone got the download for the thor. link doesnt work anymore
[Kindle Fire HDX 7" & 8.9" General] DB126:
Obsolete; use one of the following:

https://xdaforums.com/kindle-fire-hdx/general/how-to-root-unlock-hdx-noobies-t3916167

https://xdaforums.com/kindle-fire-hdx/general/multi-platform-1-click-bootloader-t3241014
[Kindle Fire HDX 7" & 8.9" General] zchtoy:
anyone got the download for the thor. link doesnt work anymore

did somebody can share them
[Kindle Fire HDX 7" & 8.9" General] LittleGreenSony:
I'm not a DEV but i have a suggestion

See my Phone is a sony xperia sp with a non unlockable bootloader. no one over in XSP forums has figured how to change the unlocking status. But for my phone I have not one but three recoveries installed via a ramdisk hijack (philz touch, TWRP, CWM). i was wondering if the HDX users with bootloaders greater than 3.2.4 would still be able to have TWRP installed by this method or are the devices too secure for this.

essentially we have two types of HDX owners those who are able to unlock and those who CURRENTLY are not able to unlock.

Please have a look into the ramdisk hijack by KerianFTW and see if it is port-able. :confused:

Great Job so far cant wait for future developments ggow, Cpastjuste and all other Devs for the HDX's :good: :highfive:

Good Luck

btw loving hdx nexus safestrap, ggow
[Kindle Fire HDX 7" & 8.9" General] jeryll:
Thank you for information, AFAIK at least [MENTION=5749760]ggow[/MENTION] is/was aware about ramdisk hijacking (check this thread for more info), but maybe [MENTION=503571]Cpasjuste[/MENTION] or [MENTION=438903]dpeddi[/MENTION] will be interested too...

Again thanks for finding and pointing on this for us... :good:
[Kindle Fire HDX 7" & 8.9" General] ajlive85:
yeah.... found that out the hard way. tried to flas twrp on 3.2.8. didn't brick, but can't access the boot menu now, which means no factory reset, nothing, lol
[Kindle Fire HDX 7" & 8.9" General] ONYXis:
I sure U can flash stock recovery from 3.2.8 if someone will dump it.
[Kindle Fire HDX 7" & 8.9" General] ajlive85:
hope so
[Kindle Fire HDX 7" & 8.9" General] ajlive85:
Nevermind..

I just used safestrap and installed the nexus rom. im good
[Kindle Fire HDX 7" & 8.9" General] captain_xyz:
Is it possible to skip downgrading it to 13.3.2.8 and instead go straight to 13.4.5.2 ?
[Kindle Fire HDX 7" & 8.9" General] ONYXis:
Sure if your software version lower than 4.5.2

But you need flash 3.2.5 at least to flash 4.x.x
[Kindle Fire HDX 7" & 8.9" General] B3NJY:
So I did my 7" kindle - Thor....just got 8.9" but also has 4.5.3 is there a version of this downgrade available for 8.9" Apollo ? And also does bootloader version mean firmware or is this different ?
[Kindle Fire HDX 7" & 8.9" General] zxcv888:
I requested a downgrade to 3.2.8 from amazon and my fire hdx 7" is not able to find update with wifi off.

With wifi on, I get last update failed error..

.. Any help?

UPDATE: I did factory reset on 3.2.8 and it's updating now.
[Kindle Fire HDX 7" & 8.9" General] DB126:
At present no option to root or rollback Apollo/Saturn from 4.5.3. Keep watching the forums; stuff happens quickly. Bootloader and FW will generally be at the same level but can be different with rollbacks.
[Kindle Fire HDX 7" & 8.9" General] drb115:
I downgraded to 13.3.2.8. How to do I upgrade from here to a version that is capable to install a custom rom with / safestrap?

Thanks!:laugh:
[Kindle Fire HDX 7" & 8.9" General] ajac:
Bootloader locked so you cant right now it seems. To bad I hate fire os. Got a 3rd generation 8.9 from my mother who hated it to and looks like it updated it self to 4.5.3 ug to bad
[Kindle Fire HDX 7" & 8.9" General] drb115:
So is there anything I can do to get a custom ROM? Or at least add gapps?
[Kindle Fire HDX 7" & 8.9" General] ajac:
once you downgrade you can root and their is a thread on the main page on getting gapps installed. but no custom roms till they figure out how to unlock the bootloader and I hope they do asap.
[Kindle Fire HDX 7" & 8.9" General] jeryll:
Hi, on 13.3.2.8 after root you can install latest safestrap recovery, and with that working you can install custom rom nexus for safestrap 1.0.1. But that is your only option for 13.3.2.8, else you can use only stock FireOS + gapps.

But beware, safestrap works different than your average recovery, its located on /system partition, so whatever you do later - do not delete, or wipe system partition - your kindle will be most likely bricked. If you need to do factory reset do it in safestrap!!! Do not use advanced wipe in safestrap unless you REALLY KNOW what you are doing...

Before you do something you will regret later, if you not understand something - ask, rooted kindle is not your average android device, you can easily break things to the state of unrecoverable brick.
[Kindle Fire HDX 7" & 8.9" General] DB126:
You CAN install safestap and the (excellent) nexus rom on rooted 3.2.8. But no CM11/CM12 ... at least for now.
[Kindle Fire HDX 7" & 8.9" General] zxcv888:
recent apps

Looks like recent apps switcher is gone on 4.5.2. I used to be able to get recent apps out when i assign the pie controls using xposed framework on 3.2.8.
[Kindle Fire HDX 7" & 8.9" General] drb115:
Hi. First off, thank much! I appreciate it. I got safestrap installed. Now my question is how do I back up the stock ROM? I am assuming I just go into the backup menu in recovery, however, I want to be complete sure.

Also, going from there. How do I then install the nexus ROM. I have had a lot of experience flashing phones in the past, however, I want to be 100% sure to avoid bricking my device.

Thanks much for the information, I greatly appreciate it.
[Kindle Fire HDX 7" & 8.9" General] jeryll:
Well most action in safestrap are similar with twrp, because safestrap is twrp based, but works on different principles, like using slots for another ROMs than stock...

1. So for backup of stock ROM sure go into the backup menu and do a backup from there.

2. Make extra ROM slot

3. Switch to extra ROM slot

4. Install previously downloaded nexus for safestrap 1.0.1 into new ROM slot (not stock ROM slot!)

5. Install gapps and/or required addons as described in thread for nexus for safestrap

6. Reboot and enjoy
[Kindle Fire HDX 7" & 8.9" General] litan1106:
Worked for 4.1.1 to 3.2.8. Thanks
[Kindle Fire HDX 7" & 8.9" General] litan1106:
3.2.8 worked with towelroot
[Kindle Fire HDX 7" & 8.9" General] ONYXis:
Apollo link added
[Kindle Fire HDX 7" & 8.9" General] charvy123:
Update failed

Hi guys,

I have an apollo on 4.5.3 and im trying to downgrade to 3.2.8. After downloading the BIN file to my PC i copied it to fire/internal storage folder. Kindle recognizes the update but when I press update it says Unable to complete because update file is not valid. Then the bin file is automatically removed from my kindle. I have disabled wifi and downloaded 3.2.8 from both links.

Any idea what i'm doing wrong?

Thanks alot
[Kindle Fire HDX 7" & 8.9" General] dazza7111:
Try downloading again on pc also reset device first? Good luck.
[Kindle Fire HDX 7" & 8.9" General] charvy123:
Still not updating, tried downloading on device still fail.

Anyone else experiencing the same problem?

edit: restored to factory defaults, still update fail. Any apollo users rollbacked succesfully?
[Kindle Fire HDX 7" & 8.9" General] Oh_wow:
Same here...same error and then it deletes the file

I am sooo crossing my fingers that there is a solution to this...
[Kindle Fire HDX 7" & 8.9" General] CanadaDave77:
This is the process I followed. Worked wonderfully well for me.

A question: There's a Nexus ROM for the device, and there's a Safestrap version of the Nexus ROM. I obviously installed the Safestrap version, but I'm wondering: What's the difference between the two? What did he need to do to the ROM to make it usable on Safestrap?
[Kindle Fire HDX 7" & 8.9" General] charvy123:
is your device a 4th gen or 3rd gen?
[Kindle Fire HDX 7" & 8.9" General] Oh_wow:
4th
[Kindle Fire HDX 7" & 8.9" General] DB126:
The original adaptation of the nexus rom ran under Safestrap as there was not an exploit that would allow overlaying the stock rom. Once a bootloader exploit was discovered (signature bypass) a twrp adaption quickly followed which allowed the safe flashing of alternative roms. However, the signature bypass and subsequent bootloader unlock is only available if the stock firmware (Fire OS) never advanced beyond version 1x.3.2.6. Until further exploits are discovered the developer has opted to maintain two variations of the nexus rom: one for users able to install twrp (v2.0.5) and a second for those who still need to run Safestrap (v1.0.1). Hope this helps.
[Kindle Fire HDX 7" & 8.9" General] charvy123:
maybe thats why our devices won't work. The member who got his device rolledback was using a 3rd gen apollo :eek:
[Kindle Fire HDX 7" & 8.9" General] EncryptedCurse:
That's your problem. 3.2.8 never even existed for the saturn.
[Kindle Fire HDX 7" & 8.9" General] DB126:
Might explain why it was so easy for ajac to get a rollback from Amazon where so many others have failed. Amazon MAY be willing to rollback Apollo (gen 3) but not Saturn (gen 4) devices. If true a real dart in the ass for gen 4 owners.
[Kindle Fire HDX 7" & 8.9" General] ONYXis:
Omg. Somebody hoped about saturn rollback? This file doesn't exists and rollback is really impossible.
[Kindle Fire HDX 7" & 8.9" General] fabische:
APOLLO ?!

I've read through the whole thread but my question remains: can somebody please confirm 100 per cent that this rollback from 4.5.3 to 3.2.8 WORKS FOR APOLLO 8.9?
[Kindle Fire HDX 7" & 8.9" General] papajetta:
worked for me
[Kindle Fire HDX 7" & 8.9" General] B3NJY:
Apollo 3rd gen downgrade

Hi mate ... just to confirm for you I have just this second installed the apollo downgrade with the file supplied in the link...

1. switch off wifi

2. transfer file to device

3. go to settings/device and update (It takes a few minutes so dont intefere just leave it till it reboots)

It will restore system so back up anything you need from device...

4. Smile you just downgraded.

Good luck :good:
[Kindle Fire HDX 7" & 8.9" General] schwinn8:
Does this update prevent future updates from Amazon (as they declared when people talked to them on chat/phone)?

If not, what is the process to prevent future Amazon updates? I expect I'd have to root and then disable/freeze some app?
[Kindle Fire HDX 7" & 8.9" General] dimi5:
No,

the downgrade doesn't disable updates.

you have to root and additionally disable the updates. See the OP for details.
[Kindle Fire HDX 7" & 8.9" General] maccaberry:
Yes, the roll back to 4.2.8 will be terminal. Amazon have warned that after rollback OTA updates will not be possible anymore. I have confirmed this to be true.

If you want to update to another Amazon ROM it will have to be done manually as outlined in the OP. To date 4.5.2 is the last version you will want to manually update to because it has the root exploit available. Do not update manually to 4.5.3 or you will be back where you started from with no chance for root at this time.

So the steps are.

Roll back to 4.2.8

Download the 4.5.2 rom

Copy the 4.5.2 from computer to the Kindle via USB cable

Disable Wifi

Click on Settings-Device-Update and the kindle will detect the manually downloaded 4.5.2 update

Click update and the device will reboot to 4.5.2

You can then copy the root apk to the device. run the root apk to obtain root. you need to click gimme root twice. Reboot to get SU working properly.

Using root permissions in ES explorer, change the updating apk filename as shown in OP.

Cheers
[Kindle Fire HDX 7" & 8.9" General] RcketScientist:
To be clear the file has to be on the sdcard root. I put it in the download folder and it wouldn't detect the update.
[Kindle Fire HDX 7" & 8.9" General] papajetta:
Just to be clear.. Think u mean 3.2.8 instead of 4.2.8. Also, I am still unclear on something. When I get rolled back to 3.2.8, why would I want to go up to 4.5.2 and root? None of the safestrap threads or roms specify 4.5.2 as being compatible. I realized this after I went up to 4.5.2. Then I went through the entire process again to get to 3.2.8 and modify from that point.
[Kindle Fire HDX 7" & 8.9" General] DB126:
Unless someone has decisively determined that Amazon removed all OTA capability from 1x.3.2.8 code I would block on the device after rollback as outlined in various posts (there are several methods). Especially if you plan to remain at 3.2.8 for awhile vs upgrading to 4.5.2 or whatever. It is my understanding Amazon will not update 3.2.8 as a matter of policy which could change. I would rather the control remain in my hands. Just sayin' ...
[Kindle Fire HDX 7" & 8.9" General] schwinn8:
This is what I want to hear more about. What can be done on 3.2.8 that isn't possible on 4.5.2? Can you point me to the mods you have done from there... safestrap and such? Feel free to msg me offline if you don't want to post on this thread...
[Kindle Fire HDX 7" & 8.9" General] DB126:
- Fire OS 3.x.x (Mojito) is based on JellyBean; Fire OS 4.x.x (Sangria) is based on KitKat. Could be a factor for sideloaded apps.

- 3.2.8 is easy to root and supports the installation of Safestrap along with an adaptation of the Nexus rom (JB 4.2.2 AOSP). Nexus offers a pure Android experience with full access to the Google Play store. Native Amazon apps available in the Play Store provide full access to Kindle reader/content and prime video. Safestrap permits toggling between stock Fire OS and Nexus (reboot required). In short, best of both worlds with very few compromises.

- 4.5.2 can be rooted which offers the ability to disable some native services and install various Google services and apps (gaps) including the play store. A quick read through these forums suggests there are varying levels of success with getting gaps to work seamlessly on Fire OS. In short, rooted 4.x.x is still Fire OS with associated pros/cons.

- At present you can not:

--> load or run CM11 (KitKat) or CM12 (Lollipop) on 3.2.8 or any of the 4.x variants

--> unlock the bootloader on 3.2.8 or any of the 4.x variants

--> downgrade below 3.2.8 (Saturn users can not roll back to 3.2.8 at all)

--> install native twrp or install any other rom aside from Nexus v1.0.1 (3.2.8 only)

Read through the forums if you want to know about specific capabilities (GPS, LTE, casting, etc).

Above is not intended to be an authoritative or complete list; just some highlights. I'm sure there are other important differences. Feel free to amend/comment/correct/update.
[Kindle Fire HDX 7" & 8.9" General] papajetta:
So pretty much there is no benefit to 4.5.2 as u can do all and more on 3.2.8....the only thing I haven't been able to work on any configuration is hangouts video calling.
[Kindle Fire HDX 7" & 8.9" General] Beeko:
So, I just bought a Kindle Fire and want to know if I have this right. With this OTA I can downgrade to 3.2.8 from 4.5.2, then I can unlock the bootloader, root, install recovery, and then flash custom ROMs. Or do I need to downgrade further for that. If I can get this done, I'll try to bring PAC-man ROM to it.
[Kindle Fire HDX 7" & 8.9" General] EncryptedCurse:
You can't unlock the bootloader on x.3.2.8. Your can install Safestrap, which — although based on TWRP — is not a true recovery per se, as it's installed to the /system partition. Moreover, the only compatible ROM available at the moment is ggow's HDX Nexus, and any others you may want to port over will have to be based on 4.2.2 due to the irreplaceable kernel.
[Kindle Fire HDX 7" & 8.9" General] maccaberry:
Yes I agree with your sentiment. Amazon have been known to do similar things in the past. Since both 3.2.8 and 4.5.2 have root access now, I would also recommend taking alternative additional measures to ensure OTA does not occur.
[Kindle Fire HDX 7" & 8.9" General] roadshow1997:
my hdx is HDX 8.9 3rd gen (Apollo) with LTE. Could I use the image for downgrading?
[Kindle Fire HDX 7" & 8.9" General] maccaberry:
4.5.2 is definitely an upgrade from 3.2.8. It is kitkat based and so allows a better selection of workable apps (i am thinking Microsoft Office btw). But you are correct that 3.2.8 does allow for the option of using safestrap and the Nexus v1.0.1 ROM in a separate slot.

But if you are used to kitkat or LP on your phone, you might find JB ROMs somewhat limiting on the Kindle because of the older app versions available in the Play store.

You need to decide what you want, the ability to have a completely google (JB) ROM via a rom slot and Nexus v1.0.1 or a highly modified Google experience with 4.5.2 overlaid with Gapps. Personally I tried both options, and for me the 4.5.2 option with Gapps while not perfect (i.e. locations services dead) gives me access to better apps.

Your experience might lead to a different conclusion. That's the great thing of the hard work by xda that gives you an option. Otherwise Amazon will give you nothing but an iOS locked down world. try both and see what you like. Easy to go back and forth between both to see which you like.
[Kindle Fire HDX 7" & 8.9" General] DB126:
Excellent guidance! And yes, it is great to have choices. Kudos to the xda developers who give up so much of their time and ask so little in return.

Some additional thoughts:

- adding Xposed and and a few modules (start with GravityBox) yields a UI experience on par with KitKat and Lollipop

- many apps that claim to need KitKat can be run on JB with a few tweaks. Obviously this entails research/work on an app-by-app basis and a few apps (eg: MS Office) truly need KitKat or Lollipop due to some OS dependency that can't be duplicated earlier versions

- Rooted Fire OS 4.5.2 is pretty easy to live with provided you are happy with the stock launcher (not everyone's cup of tea), have no desire to change wall papers and use your root powers judiciously to 'freeze' a few Amazon services that really take a toll on resources. Greenify also comes in handy.

---------- Post added at 11:47 PM ---------- Previous post was at 11:43 PM ----------

Yes, see OP. You'll probably want to upgrade to 4.5.2 after rollback to retain full LTE support.
[Kindle Fire HDX 7" & 8.9" General] EncryptedCurse:
You can still change the default launcher on FireOS 4.

http://xdaforums.com/fire-hd/themes-apps/how-to-set-custom-launcher-default-home-t2932791
[Kindle Fire HDX 7" & 8.9" General] papajetta:
I could definitely now see the benefits of 4.5.2 over 328.... However I feel safer playing around with a rom slot rather than the main partition. My perfect configuration as of now has been stock 328 with a Thor gapps zip flashed over. It gives me a nexus launcher, gapps with fire OS. I like the feel of fire OS over aosp , which would make 4.5.2 with gapps very desirable. The only downside is there is no safestrap to experiment on and I have read about lots of problems trying to get the play store to work on KK.
[Kindle Fire HDX 7" & 8.9" General] B3NJY:
So I have both thor and apollo on 3.2.8 (both downgraded from 4.5.3) then used the safestrap nexus ... which is cool...but is it possible to start again and reflash 3.2.8 then ugrade to 4.5.2 and use the root apk ...then flash cynogen 11/12 ?
[Kindle Fire HDX 7" & 8.9" General] jeryll:
No, for CM11 or CM12 you need installed twrp 2.8.5.0 (req. fw 3.1.0 - 3.2.3.2) and/or unlocked BL.
[Kindle Fire HDX 7" & 8.9" General] DB126:
No Cyanogen on 3.2.8 or any 4.x.x variant due to locked bootloader and incompatible kernel. Only Fire OS and Nexus for now.
[Kindle Fire HDX 7" & 8.9" General] lekofraggle:
Just to clarify, once you sideload the update from 3.2.8 to 4.x.x, OTA capabilities return.
[Kindle Fire HDX 7" & 8.9" General] myotai:
I did the upgrade to 4.5.3 but it keeps forcing a downgrade to 3.2.8. No control over it either???

Any ideas? Thanks...
[Kindle Fire HDX 7" & 8.9" General] jeryll:
Did you at least TRY to read OP???

Your answer is at the end there!

Disable OTA on 4.5.2 + ...
[Kindle Fire HDX 7" & 8.9" General] myotai:
Well who rattled your cage! Did you even bother to read my post re 4.5.3....THREE!!!

---------- Post added at 12:03 PM ---------- Previous post was at 12:02 PM ----------

THREE.....not TWO......THREE!