[Q] Kindle fire HD runs slowly after root - 7" Kindle Fire HD Q&A, Help & Troubleshooting

Hey guys, i have a problem with my KIndle Fire HD. Honestly i am a noob ....
Yesterday, i bought a fire hd(Version 7.4.3). Then i followed a step by step describtion to root the tablet. I thought the root were successful but now the tablet runs very slow. I dont know what i´ve done or what happened.
What can i do? Can i maybe re-root the tablet?
Please i need help!

energetic1 said:
Hey guys, i have a problem with my KIndle Fire HD. Honestly i am a noob ....
Yesterday, i bought a fire hd(Version 7.4.3). Then i followed a step by step describtion to root the tablet. I thought the root were successful but now the tablet runs very slow. I dont know what i´ve done or what happened.
What can i do? Can i maybe re-root the tablet?
Please i need help!
Click to expand...
Click to collapse
How did u root? I used binary version only...don't use qemu version
you sneaky rat, abducted from Amazon's ex, CM10.1 kindle, by Tapatalk 4

I've rooted my Kindle just now with Root_with_Restore_by_Bin4ry_v31.zip, now it's so freaking slow... Some process is apparently running in the background and sucks processor's resources. The screen is blinking every two seconds, like graphical subsystem is overloaded.
There are some instructions for that case here: http://android.stackexchange.com/questions/36448/kindle-fire-hd-7-runs-very-slowly-after-rooting
Speicfically, they recommend to run this automated Qemu root: http://forum.xda-developers.com/showthread.php?t=1893838
I tried it and for me it worked.

Nickrus said:
I've rooted my Kindle just now with Root_with_Restore_by_Bin4ry_v31.zip, now it's so freaking slow... Some process is apparently running in the background and sucks processor's resources. The screen is blinking every two seconds, like graphical subsystem is overloaded.
There are some instructions for that case here: http://android.stackexchange.com/questions/36448/kindle-fire-hd-7-runs-very-slowly-after-rooting
Speicfically, they recommend to run this automated Qemu root: http://forum.xda-developers.com/showthread.php?t=1893838
I tried it and for me it worked.
Click to expand...
Click to collapse
The qemu was mainly for 7.2.3 tablets
Screaming idgaf with his windows down and his system up

You need to rerun the rooting method as instructed as mine that and couldn't work out why and read the instructions and it says do it again and everything will run as normal. So all you need to do is rerun the rooting method again and kaboom its rooted and running as normal I used method 2 to root my kindle. Hope this helps
Sent from my Amazon Kindle Fire HD using xda premium

Are you guys talking about the rooting methods in [REF] Installing Kindle Fire HD 7" 2nd-Bootloader + TWRP Complete Tutorial?
My KFHD arrives tomorrow and want to make sure I am ready.
-T

Yes and you need to run the rooting method twice or it will be very slow. I used method 2, coudnt get qemu to work properly coz of adb I may of missed something but method 2 was simple and easy also after rooting use firehd I think or fire somethink apk file its in the instructions anyway
Sent from my GT-I9300 using xda premium

Related

Is my Kindle Fire HD (7.2.1) unuseful now?

Hi all, I'm posting after weeks lurking here how to make my Kindle Fire HD 2 a real table. I followed many steps but now I can't even switch on the kindle so I ask you if I can solve my problem.
The kindle I have is the Kindle Fire HD (I guess 2) with Microphone and Webcam. The Version is 7.2.1
At first I rooted the device using the instruction on this page:
http://forum.xda-developers.com/showthread.php?t=1891939
Eveything worked and not without any effort. I had to install the Android SDK and test many times the adb tools.
Before that I tried the KUF 0.9.6 but didn't work.
After the rooting I wanted to install TWRP, my purpose is to have a tablet with Android.
I followed the instruction on this page: http://finditmore.info/2012/09/19/install-team-win-recovery-project-kindle-fire/
I guess here is the mistake. I downloaded the twrp 2.3 and firefirefire 1.2 and installed as wrote in that page, but now I can't switch on the kindle. Really is like death.
Could anyone explain me what I did wrong? Could I still recover the tablet?
Thanks in advance
arrabbiato said:
Hi all, I'm posting after weeks lurking here how to make my Kindle Fire HD 2 a real table. I followed many steps but now I can't even switch on the kindle so I ask you if I can solve my problem.
The kindle I have is the Kindle Fire HD (I guess 2) with Microphone and Webcam. The Version is 7.2.1
At first I rooted the device using the instruction on this page:
http://forum.xda-developers.com/showthread.php?t=1891939
Eveything worked and not without any effort. I had to install the Android SDK and test many times the adb tools.
Before that I tried the KUF 0.9.6 but didn't work.
After the rooting I wanted to install TWRP, my purpose is to have a tablet with Android.
I followed the instruction on this page: http://finditmore.info/2012/09/19/install-team-win-recovery-project-kindle-fire/
I guess here is the mistake. I downloaded the twrp 2.3 and firefirefire 1.2 and installed as wrote in that page, but now I can't switch on the kindle. Really is like death.
Could anyone explain me what I did wrong? Could I still recover the tablet?
Thanks in advance
Click to expand...
Click to collapse
The post you linked explains a method for KINDLE FIRE 1ST GENERATION, there's no possibility for now to get a recovery working in our devices regardless of whether the device is a Kindle Fire HD or a Kindle Fire 2. So, you probably bricked your device. From my point of view you only have 2 choices: You can retUrn it to Amazon and pray, or you can try with this method: http://forum.xda-developers.com/showthread.php?t=1951254.
But please, read everything before doing anything.
Hope it helps
tamoquera said:
The post you linked explains a method for KINDLE FIRE 1ST GENERATION, there's no possibility for now to get a recovery working in our devices regardless of whether the device is a Kindle Fire HD or a Kindle Fire 2. So, you probably bricked your device. From my point of view you only have 2 choices: You can retUrn it to Amazon and pray, or you can try with this method: http://forum.xda-developers.com/showthread.php?t=1951254.
But please, read everything before doing anything.
Hope it helps
Click to expand...
Click to collapse
Thanks. I'm downloading the system from the thread you pointed me out. But what make me very disappointed is the fact that the kindle isn't switching on anymore. This is really odd.
I'll try to fix it if I can't I'll send to amazon and I'll pray.
Anyway, where are the instruction to flash the Kindle HD 7.2.1?
Thanks!
There is no way you can get your device working now. As far as we know, only Amazon has the ability to fix a second generation device that has an unsigned bootloader or recovery installed.

Is rooting safe & easy?

I'm planning on buying a Kindle Fire HD. I'm very new to this rooting thing and makes me wonder 1. Is it safe and 2. is it easy?
I would like to know how can i root/unlock the KFHD so i can install Google Play store, sideload apps and be able install .apk files to it.
Please advice. Thanks.
gino_76ph said:
I'm planning on buying a Kindle Fire HD. I'm very new to this rooting thing and makes me wonder 1. Is it safe and 2. is it easy?
I would like to know how can i root/unlock the KFHD so i can install Google Play store, sideload apps and be able install .apk files to it.
Please advice. Thanks.
Click to expand...
Click to collapse
As far as I know, the "Unlocking" part of your statement is not currently possible. Also, yes, rooting is safe and extremely easy.
Please advice on how to root the Kindle Fore HD?
gino_76ph said:
Please advice on how to root the Kindle Fore HD?
Click to expand...
Click to collapse
Rooting is only safe and easy when you know what you're looking for. Visit the thread in my signature.
I got the kfhd7 for Xmas. I got on these forums and within days easily and safely rooted it. And there is a tool to unroot it as well in case you ever have to send it back to amazon. Good luck.
Sent from my Kindle Fire HD 7 using xda app-developers app
For me the Kindle Fire HD 7 has always been the biggest pain in the ass to root of any Android device I've ever owned. Despite getting the ADB drivers installed (the instructions never remind me to disable driver signing in Windows, wish they'd include that detail for us Windows 8 users), I still always hit a brick wall trying to get the Kindle to show up in ADB devices or getting the rootqemu.bat file to work. I usually have to mess around for 2 or 3 hours banging my head against a table and reading about everyone else's failures before I figure out what went wrong.
Also the rooting threads seem to indicate only two ZIP files are need (ADB drivers and the RootQemu files), and installing the SDK is not required. But seems like I always end up having to install the SDK anyway.
seokhun said:
Rooting is only safe and easy when you know what you're looking for. Visit the thread in my signature.
Click to expand...
Click to collapse
Rooting is pretty straightforward and safe nowadays as long as you take your time and follow the instructions. It's when you start trying to install custom ROMs that the risk occurs.
http://forum.xda-developers.com/showthread.php?p=42277275
This link is for the kindle first aid kit which is an all in one tool kit. It's great and should have you rooted in no time. Good luck!
Sent from my Amazon Kindle Fire HD using xda premium

[Q] Kindle Fire HD - Lost Root After 7.4.6 to 7.4.8 Update - Any Advice?

Ok, so I'm a noob when it comes to this stuff, but I have managed to root my Kindle Fire HD 7" and I installed the Google play store, so I was happy thus far. Yesterday I lost root and couldn't figure out why. Today I noticed that my Kindle had done an update from 7.4.6 to 7.4.8 and I'm wondering if this is why I lost root? If so, how can I fix this to get my Kindle back into root? Like I said, I'm a noob and don't want to screw up my Kindle messing around with stuff when I don't have a clue. Any advice would be of great help, thanks in advance.
Oh yeah, I should add this information: I get this pop up from Superuser, "There is no SU binary installed and Superuser can not install it. This is a problem"
Yea when it updates it clears the system partition where the su binary is stored, you need to reroot it. Never heard of a 7.4.8 update, but if it is a new one and you can reroot it then you can just downgrade it with kindle fire first aid by sticking it into fastboot with a simple "adb reboot bootloader", think kffa will do it for you though.
Sent from my Amazon Kindle Fire HD using Tapatalk
masterndentske
stunts513 said:
Yea when it updates it clears the system partition where the su binary is stored, you need to reroot it. Never heard of a 7.4.8 update, but if it is a new one and you can reroot it then you can just downgrade it with kindle fire first aid by sticking it into fastboot with a simple "adb reboot bootloader", think kffa will do it for you though.
Sent from my Amazon Kindle Fire HD using Tapatalk
Click to expand...
Click to collapse
" Never heard of a 7.4.8 update, but if it is a new one and you can reroot it " Hmmmm, the way you worded that makes me feel like I might be stepping into uncharted territory if I try to root it again and I don't like the thought of that. I'll think about it and maybe give it a try tomorrow after I get some sleep and my head is clear. Thanks for the advice, I really appreciate it.
cautiousone said:
" Never heard of a 7.4.8 update, but if it is a new one and you can reroot it " Hmmmm, the way you worded that makes me feel like I might be stepping into uncharted territory if I try to root it again and I don't like the thought of that. I'll think about it and maybe give it a try tomorrow after I get some sleep and my head is clear. Thanks for the advice, I really appreciate it.
Click to expand...
Click to collapse
I had the same problem starting yesterday. My Kindle upgraded to 7.4.8 and any app requiring root stopped working, namely Google Play Store, SuperUser, ... I used KFFirstAide to re-root the Kindle and all is working so far.
blackeyeX2 said:
I had the same problem starting yesterday. My Kindle upgraded to 7.4.8 and any app requiring root stopped working, namely Google Play Store, SuperUser, ... I used KFFirstAide to re-root the Kindle and all is working so far.
Click to expand...
Click to collapse
:good: Awesome, thanks for passing that on to me, I'm going to give it a go and see what happens. I'll post a status update later today after I've had a chance to thoroughly test it.
:victory: Well I got it to root again and reinstalled google play with no issues to report, all went well. So is there a way to stop Amazon from updating my Kindle in the future? Now, the next task is to get a second boot loader on it, although I don't have a fastboot cable, so I'm kinda chicken, hahaha. But I'm feeling confident now, so maybe I'll give it a shot tonight. Wish me luck... A big thanks for the help, I guess I just needed some reassurance on re-rooting the thing and I'm happy.
Just make sure you downgrade the bootloader first, if you don't use the fireflash method then I recommend making sure to check the md5sum of the bootloader before downgrading it so you don't end up with a paperweight.
Sent from my Amazon Kindle Fire HD using Tapatalk
I'm having this issue also. Same update, same loss of SU + Play store.
I can't get my kindle to root like before though. It says it was successful but my fire becomes extremely laggy, no icons appear, where the navigation swipe is there are slightly darker vertical lines and the only way I've fixed it is by factory restore.
How are you rerooting???
I can't remember how I rooted in the first place, I only remember that I had massive issues getting GP store on and used this KFFA which is what I'm now using to reroot.
http://forum.xda-developers.com/showthread.php?t=2069329
Any suggestions would be massively appreciated
kindle fire hd 7.4.8
same thing happen to me so I tried getting adb to work witch it didn't that well, so I downloaded the update .bin file from amazon and edited it useing winRAR just added SuperSU to /system/app then changed a few things in kindle first aid then used a fastboot cable to upload the custom update so my kindle is running v7.4.9 witch I changed it to because it didn't work any other way. i'll make a video
dEADwEIRD said:
I'm having this issue also. Same update, same loss of SU + Play store.
I can't get my kindle to root like before though. It says it was successful but my fire becomes extremely laggy, no icons appear, where the navigation swipe is there are slightly darker vertical lines and the only way I've fixed it is by factory restore.
How are you rerooting???
I can't remember how I rooted in the first place, I only remember that I had massive issues getting GP store on and used this KFFA which is what I'm now using to reroot.
http://forum.xda-developers.com/showthread.php?t=2069329
Any suggestions would be massively appreciated
Click to expand...
Click to collapse
I just followed the same steps as I did the first time I rooted it, I used KFFA. But this time around some of the actions described didn't happen, like Superuser didn't ask for permission as it did the first go around and a few other little things, but I just took it slow and easy and it came out working fine. Also I used KFFA to install GP, it also skipped a few actions, but I just have it a little extra time to do its thing and it works perfectly. I saw a fix for the laggy screen and icons issue somewhere, I think it's in KFFA? I would have to double check that when I get home to be certain.
stunts513 said:
Just make sure you downgrade the bootloader first, if you don't use the fireflash method then I recommend making sure to check the md5sum of the bootloader before downgrading it so you don't end up with a paperweight.
Sent from my Amazon Kindle Fire HD using Tapatalk
Click to expand...
Click to collapse
Thanks for the heads up on that, I've held off on doing it until I have more time to research it. I like to feel somewhat comfortable going into it and not totally freaked out. Thanks again, you guys are great around here.
Sorted.
I rooted using The Bin4ry Method and using KFFA to bring all the other systems back on line.
is anyone having problems with ADB and fastboot on 7.4.8?
Because I tried rooting using KFFA that didn't work I kept getting errors so I tried using fastboot to flash the recovery using this code
Code:
fastboot flash recovery recovery.img
I get "device not found" or when it dose work i get "failed to flash" (something like that) but i have the adb drivers installed would there be different ones for 7.4.8? When I type
Code:
fastboot device
it finds the device it just dosn't work when I want to flash
and only half the adb commands work
You have to have it with a special parameter telling it what the kindles vendor id is so it should look like this...:
Code:
fastboot -i 0x1949 flash recovery recovery.IMG
Try that.
Sent from my Amazon Kindle Fire HD using Tapatalk
"... I used KFFirstAide to re-root the Kindle and all is working so far."
I tried using bin4ry's root, which is how I originally rooted my kindle, but it did not work.
I am pleased to say that KFFirstAide was able to restore root.
Thank you xda for pointing me in the right direction!
stunts513 said:
You have to have it with a special parameter telling it what the kindles vendor id is so it should look like this...:
Code:
fastboot -i 0x1949 flash recovery recovery.IMG
Try that.
Sent from my Amazon Kindle Fire HD using Tapatalk
Click to expand...
Click to collapse
Thank you!!! i got root access by flashing with twrp recovery witch you can get more info at
http://forum.xda-developers.com/showthread.php?t=2128848
on my other kindle i used Bin4ry root witch work but i had to turn off adb/usb debugging and turn it back on during the process because it wouldn't find the device if i didn't
you can download Bin4ry here
http://forum.xda-developers.com/showthread.php?t=1886460
gregcavaretta said:
on my other kindle i used Bin4ry root witch work but i had to turn off adb/usb debugging and turn it back on during the process because it wouldn't find the device if i didn't
Click to expand...
Click to collapse
Thank's, KFFA not recovered and Bin4ry work only after turn off adb / usb debugging
Ciao dal Max
gregcavaretta said:
Thank you!!! i got root access by flashing with twrp recovery witch i downloaded at
http://teamw.in/project/twrp2/79
on my other kindle i used Bin4ry root witch work but i had to turn off adb/usb debugging and turn it back on during the process because it wouldn't find the device if i didn't
you can download Bin4ry here
http://forum.xda-developers.com/showthread.php?t=1886460
Click to expand...
Click to collapse
wtf????? that was a twrp image for the kf1, that should have broken more than it fixed on a kfhd.
Holy ****!!! Your kindle works after flashing the recovery IMG that was for the kf1???
Sent from my Kindle Fire HD 7 running PAC-man
wire55 said:
Holy ****!!! Your kindle works after flashing the recovery IMG that was for the kf1???
Sent from my Kindle Fire HD 7 running PAC-man
Click to expand...
Click to collapse
stunts513 said:
wtf????? that was a twrp image for the kf1, that should have broken more than it fixed on a kfhd.
Click to expand...
Click to collapse
I posted the Wrong link i'm truly sorry if you messed up your kindle fire

[Q] Any exploits identified yet to root 11.3.2?

Hi
I know the update just got pushed a couple of days back, but wanted to check if anyone had already identified how to root a Kindle Fire HD with 11.3.2?
I lost my root access after this update.
Thanks.
abhi.ko said:
Hi
I know the update just got pushed a couple of days back, but wanted to check if anyone had already identified how to root a Kindle Fire HD with 11.3.2?
I lost my root access after this update.
Thanks.
Click to expand...
Click to collapse
Use this: http://forum.xda-developers.com/showpost.php?p=50985251&postcount=347
Just worked fine for me couple of minutes ago.
Regards.
is there any exploit working which doesn't need a factory cable?
yomagin said:
is there any exploit working which doesn't need a factory cable?
Click to expand...
Click to collapse
i'm not an expert with the 2013 kindles, but you shouldn't need one if adb is enabled, you should be able to run "adb reboot bootloader", unless for some reason you have no adb access.
no there isnt as of yet. adb reboot fastboot does not function on this device so you need the fact cable to get it into that mode to run the exploit
O well that sucks least I know this now. Can't believe they disabled the easy way to get into it.
Sent from my Amazon Kindle Fire HD using Tapatalk
Hello
I've had the same issue. My kindle was rooted fine but then a recent update has caused it to become unrooted. Version is 11.3.2
Does anyone know if there is a way for me to root this again?
Much appreciated
Look up a few posts... The one by eLiTeFLO...
Sent from my Amazon Kindle Fire HD using Tapatalk
root 11.3.2
stunts513 said:
Look up a few posts... The one by eLiTeFLO...
Sent from my Amazon Kindle Fire HD using Tapatalk
Click to expand...
Click to collapse
So anybody know how to root the kindle fire 7" 2013 running 11.3.2 without factory cable? Otherwise is there a way to downgrade to 11.3.1?
11.3.2.3.2
Hi, rooting noob here-literally just starting!
Can't find anything on rooting my Kindle Fire HD 2nd Gen which is running the 11.3.2.3.2 version. It was installed today (so I'm not suprised that I can't find anything).
Anyway, tried using the files above by downloading and running the runme batch filebut it kept getting stuck on "Waiting for device." You mentioned fixing it somehow...How?
Please be thorough, I'm new.
Gotcha_Hotshot22 said:
Hi, rooting noob here-literally just starting!
Can't find anything on rooting my Kindle Fire HD 2nd Gen which is running the 11.3.2.3.2 version. It was installed today (so I'm not suprised that I can't find anything).
Anyway, tried using the files above by downloading and running the runme batch filebut it kept getting stuck on "Waiting for device." You mentioned fixing it somehow...How?
Please be thorough, I'm new.
Click to expand...
Click to collapse
Same here, been scouring the web and have found nothing, looks like we may be stuck for a while. The thing that drives me NUTS is that I got this warranty replaced by Amazon, and the day I turned it on it updated from 11.x...if ONLY I'd left it in airplane mode!!
unbwogable said:
Same here, been scouring the web and have found nothing, looks like we may be stuck for a while. The thing that drives me NUTS is that I got this warranty replaced by Amazon, and the day I turned it on it updated from 11.x...if ONLY I'd left it in airplane mode!!
Click to expand...
Click to collapse
^^ Same here.
Even contacted Amazon Support to see if there's any way to downgrade or reset to complete stock.... and was told that due to my Kindle Fire 7" 2nd Gen "lagging" and "freezing up" (wasnt sure exactly WHY I was trying to revert pre-update lol) all he could recommend was sending it in for repair/replacement. Dang it.
Off I go to (attempt) a fastboot cable.... <wish me luck!>
Send it in and then restart rooting it again.
Sent from my Amazon Tate using XDA Premium 4 mobile app
wire55 said:
Send it in and then restart rooting it again.
Sent from my Amazon Tate using XDA Premium 4 mobile app
Click to expand...
Click to collapse
This...
Sent from my Nexus 7 Flo running Paranoid Android 4.4.4 using XDA premium 4 mobile app

7.4.9 never been rooted ... how can I root it now?

I have a Kindle Fire HD that has never been rooted (although I tried like heck last night when it was 7.4.8) and today I see it is 7.4.9 and have been told this is unrootable? Is this correct?
If so, is there anyway to add the Google Play store without rooting. I bought this on eBay listed as unable to be registered but I didn't care because I didn't want the Fire OS, my plan was to make it a full fledged android tablet with a custom ROM.
What can I do now?
GameGuru41 said:
I have a Kindle Fire HD that has never been rooted (although I tried like heck last night when it was 7.4.8) and today I see it is 7.4.9 and have been told this is unrootable? Is this correct?
If so, is there anyway to add the Google Play store without rooting. I bought this on eBay listed as unable to be registered but I didn't care because I didn't want the Fire OS, my plan was to make it a full fledged android tablet with a custom ROM.
What can I do now?
Click to expand...
Click to collapse
Fastboot with a fastboot cable or maybe a "adb reboot bootloader" if you get lucky, then downgrade the os with kindle fire first aid, proceed with the usual procedure.
Sent from my Amazon Tate using Tapatalk
Ok I ordered a fast boot factory cable today. Do I have to downgrade or can I just use the cable install a custom ROM?
GameGuru41 said:
Ok I ordered a fast boot factory cable today. Do I have to downgrade or can I just use the cable install a custom ROM?
Click to expand...
Click to collapse
I just flashed my 7.4.9 KFHD 2012 with CM11 - I used the tutorial on the CM wiki...Worked perfectly.
medeman said:
I just flashed my 7.4.9 KFHD 2012 with CM11 - I used the tutorial on the CM wiki...Worked perfectly.
Click to expand...
Click to collapse
Did you first root your device? Did you use a fastbootcable?
Thx in common
Even though this says for the 2013 version of the Kindle Fire HD, it does work on the the HD 7 running 7.4.9. It is how I rooted mine. You will have to manually install SuperSu which you can get from Chainfire's site.
medeman said:
I just flashed my 7.4.9 KFHD 2012 with CM11 - I used the tutorial on the CM wiki...Worked perfectly.
Click to expand...
Click to collapse
Im trying that tonight on a kfhd 8.9 with the 8.4.9 Hoping i can get in to go to fastboot. If i can not get this going soon i may fix it permanently using the microwave technique (as in putting the kinlde fire in a 1000watt microwave oven for 10 minutes and cooking it...)
If it comes down to this maybe ill record it for all to see haha.
Stupid amazon and their forcing us in to the x.4.9 update. This should not be legal for any company to do period. Would be like a auto maker sneaking in to your driveway and removing your performance enhancing upgrades and using a welding torch to put their factory garbage back on. And yes it is the same idea. We all root or kindles and other android devices (and apple products) to give us a better performing and or more feture rich device. Those who do this understand this voids the warranty and are not worried about that at all. Heck many of us own tablets etc that are long out of warranty so amazon etc will not even need to worry about that side of thing.
Sorry for the venting but yeesh this is irritating
$yr0 said:
Did you first root your device? Did you use a fastbootcable?
Thx in common
Click to expand...
Click to collapse
No my device wasn't rooted and barely used at all at this point.
I did use a fastboot cable, yeah...
I also have 7.4.9 and rooted it with Root with Restore by Bin4ary, using Option 1, via ADB. Worked just as it did with previous OS.
KFFirstAide didn't root it.
What did you try to root it with?
Issue with rooting 7.4.9
I tried using the root with recovery binary to root my kindle fire hd, but it won't run fireflash, and busy box was not included when it rooted. Am I missing something here? It's a Kindle Fire HD 7", running 7.4.9.
Downgrade it with SRT or kffa, it will be pre-rooted. You may need a fastboot cable to do this though if "adb reboot bootloader" doesn't do the trick.

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