Download iOS 4.3.1 Firmware for iPhone, iPad, iPod Touch [IPSW] - iPhoneHeat

Download iOS 4.3.1 Firmware for iPhone, iPad, iPod Touch [IPSW]

iOS 4.3.1 firmware for iPhone 4, iPhone 3GS, iPad 2, iPad, and iPod touch 4G, 3G is now available for download. You can download iOS 4.3.1 firmware IPSW build 8G4 from the links below. iOS 4.3.1 is comes with patches for security loop holes, fixes for minor bugs and battery life n all iOS devices.

How to Install iOS 4.3.1

*** iOS 4.3.1 requires iTunes 10.2.1

To install iOS 4.3.1 on your device, connect your iPhone/iPod Touch/iPad to iTunes 10.2.1, new firmware availability message will appear then hit the “Download and Install” button. (Not recommended for jailbreakers and unlockers)

You can also download iOS 4.3 firmware from the links below. Hold down the Shit (Windows) or Alt/Option (Mac) key and hit the restore button on iTunes and select the downloaded IPSW file.

WARNING: Jailbreakers/Unlockers MUST stay away from iOS 4.3.1 until further notice.

Download iOS 4.3.1 Firmware

You can download iOS 4.3.1 firmware (IPSW files) for iPhone 4, iPhone 3GS, iPad 2, 1 and iPod Touch 4G and 3G from the links below.

Download iOS 4.3.1 For IPhone 4

Download IOS 4.3.1 For IPhone 3GS

Download IOS 4.3.1 For IPod Touch 4G

Download IOS 4.3.1 For IPod Touch 3G

Download IOS 4.3 For IPad 2

Download IOS 4.3.1 For IPad

iTunes 10.2.1

You can download the latest iTunes 10.2.1 from the link below:

We’ll keep you updated as soon as iOS 4.3.1 jailbreak tools are available for download along with detailed step by step instructions.

Jailbreak iOS 4.3.1

Unlock iOS 4.3.1

Unlock iOS 4.3.1 with UltraSn0w 1.2.1

Also checkout:
How to: Downgrade iOS 4.3 to iOS 4.2.1
How to: Save SHSH blobs for iOS 4.3.1

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68 comments… add one
georges March 26, 2011, 2:23 pm

Can someone help me plz? I want to know if i restore my iphone 3gs (current firmware 4.3 BB 05.16.01) to factory setting or reset default setting will this downgrade my bb yes or no? Thx

John March 26, 2011, 5:32 pm

i think once the baseband has been updated it cannot be downgraded…!

BoomCan90 March 27, 2011, 4:18 pm

NO, once the baseband has been upgraded, then it cannot be downgraded.

iHackApple69 April 5, 2011, 8:58 am

yes you can change it. You can use pwnage tool 4.3.1 off of the dev team blog to make the baseband 06.15.00

zaghloul April 3, 2011, 10:41 am

during to installed new virgin IOS 4.3.1 we have error 1603

mskhs April 4, 2011, 8:14 pm

just need to know, did the jailbreak via redsnow. how long does it take for the “downloading jailbreak data” process is going to take? mine stuck at this process each time for more than half hour.


iPhoneHeat April 4, 2011, 11:28 pm


anonymus April 5, 2011, 12:46 am

hahahahaha hold down the shit (windows) key 😛

mandomando April 5, 2011, 1:21 am

Ive tried jailbreak my iphone 4. Upgraded to ios 4.3.1, but when i try to jailbreak it gets stuck at Uploading Ramdisk… Someone help please….

erobin1962 April 5, 2011, 9:59 pm

open redsnow …just before u browse hold control alt delete to start task manger. Right click on redsnow to change afinity to CPU one then continue on with the process

Mando Mando April 6, 2011, 9:59 am

Awesome!! It worked perfectly! Thank You Very Much eRobin

chris April 13, 2011, 11:48 pm

THank you – this solved the same problem for me too!

tvandang April 14, 2011, 10:59 am

once jailbreak the iphone 3gs using redsnow latest version, am i able to make phone calls? i have att carrier. what does it mean to UNLOCK an iphone? thanks!

crr1986 April 5, 2011, 9:17 pm

My iPhone 3gs on Windows is stuck at “Installing Activation Bundles”…it just hangs for several minutes and then the phone turns off, turns back on and the “plug into itunes” icons show up….Itunes wants me to restore the phone, but it always returns with an error…I’m stuck, please help!

kat April 7, 2011, 1:41 am

i downloaaded the firmware for the ipod touch 3g and then when you have to browse for the firmware before you click next to install cydia, i go to the file and there is nothing in the file?:/

kakiplay August 19, 2011, 6:19 pm

hola saludos a todos presnto el mismo problema que algunos descargo el firmware pero al darle a buscar con el itunes no essta , esta es un archivo rar o zip, y al descomprimir dos carpetas , he leido algunas soluciones pero no las se hacer, deben tratar de ser mas especificos en las explicaciones por favor alhgunos no somos tan tecnicos y metodicos como uds en este conocimiento, gracias espero una respuesta clara y precisa

D April 8, 2011, 10:39 am

Hold down the shit lmao, what a Nub misspell error

babilonia April 9, 2011, 11:11 am

nw estou conseguindo fazer o JP o firmware nw aparece como na imagem que temos no exemplo acima ,, alguem sabe me dizer como fasso meu sistema é win7 64b..
meu ios iphone 4 4.3.1 obrigado…

dish4700 April 10, 2011, 9:23 am

I have a iphone 3gs did the upgrade to 4.3.1 i download the restore for 3gs when i open the file the ipsw 4.3.1 file is missing why is that i am running windows 7 home premium trying to run it with snowbreeze but no luck can someone help me

munna April 12, 2011, 11:14 am

Need Help..pls.. i am currently running a jailbroken ipad 3.2.2. I want to upgrade to firmware 4.3.1.. and continue to jailbreak it…

am using windows 7 (Genuine) and i have downloaded the RedsnOw 0.9.6rc12 and the snowbreeze 2.5 along with the custom ipsw file ios 4.3.1 for ipad.

when i run the redsnow and/or the snowbreeze and search for the ipsw file under the given search options , the ipsw file is not detected so i cant proceed to upgrade…any help here please…

merapple April 13, 2011, 1:17 pm

i Have a 3rd gen ipod touch and so i have downloaded the ipsw for 4.3.1 from above but when it saves it is in zip format. I have tried unzipping it but that just extracts the file that are inside the zip. how do i convert it to .ipsw format?

The pearl April 19, 2011, 3:16 am

I had the same problem, where the redsnow could not find the firmware. I’ve solved this problem by changing the file extension from .zip to .ipsw. you will find that the icon of the file will change and then the jailbreak will go smoothly. hope this will help

carasco April 14, 2011, 5:00 am

I download redsn0w and 4.3.1 firmware from this site.
I already have install to my iphone 4 the latest firmware 4.3.1
when i start redsnow and I hit browse it’s not finding my firmware, not even on the file that I download from here.
what can I do?

siyah April 17, 2011, 1:04 am

I’m having the same problem I download redsn0w and 4.3.1 firmware from this site when i start redsnow and try to browse to find the file it’s not finding it plss help

FreakyIPhone July 31, 2011, 1:40 pm

Change Your File at last like : Iphone2,1_4.3.1_8G4_Restore.ipsw

And don’t keep it like .zip or .rar etc.

The pearl April 19, 2011, 3:16 am

I had the same problem, where the redsnow could not find the firmware. I’ve solved this problem by changing the file extension from .zip to .ipsw. you will find that the icon of the file will change and then the jailbreak will go smoothly. hope this will help

andy April 21, 2011, 11:43 pm

how the hell do you change the extension from .zip to .ipsw???? i just can’t get it done

DanLuc April 25, 2011, 8:06 pm

To change the extension you right click on the file and choose rename, highlight the extension and change it from zip to will be asked if you are sure say yes and that’s it (this is for Win.-never open the zip)

TheKris43 July 1, 2011, 10:30 pm

i have the same problem but it shows the C:\Users\TheKris\Documents\iPhone2, when i click browse it takes inside the folder

shahrukh April 16, 2011, 1:24 pm

i have iphone 4 running ios 4.0 not factory unlocked and model firmware 1.59.00 and i want to upgrade to ios 4.3.1 if i upgrade it will i be able to unlock my iphone from the above method i just dont wanna b hanged plz help and answer me

DanLuc April 25, 2011, 8:22 pm

i believe its always wise to do some home work on any subject as major as having an unlock on your iphone 4. google the subject(ex.iphone 4 ios 4.3.2 unlock) -you will get a lot of info- also try -they have compiled a table with all idevices and what application can be used.if there is no unlock yet it will say so- good luck

jada10009 April 16, 2011, 4:30 pm

i been tryin to jailbreak my iphone 3 gs 4.3.1 but when i download the proper firmware for the phone i cant see it when i browse with redsnow. i see the folder but not the firmware.i am using vista and i ran redsnow under xp compatabilty any help plz

jen May 17, 2011, 5:11 am

For everyone who is downloading firmware and then not being able to find the file, I have the solution.
When you click on the link to download the firmware file, you will get a dialogue box asking if you want to save the file or open it. You want to save it. You might need to click a down arrow to pull up the ‘Save as’ option. Click “Save as”. Another box will appear for you to save the file. Change the file type from ‘.zip’ to ‘all files’. Now when it downloads it will automatically save the file as ‘Apple Device Software Update File’. There should be no problem finding the file now. Hope this helps!! Tooks me hours to figure it out! I don’t want anyone else to suffer like I did.

chuck May 16, 2011, 8:17 pm

i thought apple stopped making updates for 3g and and stopped at 4.2.1 ???? above there is 3g upadte 4.3.1

whats the story?? need to know rapid. since i updated mine to 4.2.1 the wireless works when it feels like it. driving me mad so i may downgrade or use the update above ?

pls mail me. [email protected]

thanks 😉

maryfesh May 23, 2011, 2:23 am

Is it normal that the firmware ipsw is taking like an hour to download???

Niranjan June 8, 2011, 1:23 pm

I Have Downloaded d firmware from here, for my i phone 3gs: ios 4.3.1.

now, d extention is .ipsw, i cross checked, also, the icon is the apple firmware upgrade icon..

redsnow says it does not recognize d file!
downloaded d same file twice, d same error..

someone please help me with dis.. i’ve been waiting for using this phone, and now that it finally is in my hands, d jailbreak is causing d problem..

shay21 July 5, 2011, 1:07 am

i have the itouch 4G i did wat was said i have everything downloaded and got cydia but wen i click on the cydia app it wont open

pops July 18, 2011, 3:17 pm

you need to restart your device if it still doesnt open you need to re-jailbreak

riste September 18, 2011, 1:13 pm

how the hell do you change the extension from .zip to .ipsw?

cwats124 November 2, 2011, 1:39 pm

Do I really want to touch the “Shit” key?

Downloade November 14, 2011, 1:45 am

I’ve been looking for this for so long!
Downloaded all the firmwares.

shanky February 17, 2012, 11:50 pm

i have an 4.3.3 firmware ios and facing so much problem of signal. My iphone signal get continusly changing like fr a sec they cum n thn jus disppear its gng on loop.. someone please help…

dreadhead April 13, 2012, 11:58 pm

hello. is there something wrong with downloading the restore software for iphone4 1_4.3.1_8G4_Restore?? trying to download on cpu and its not working??? is there any other ways? going crazy right now!! please help!

dmans622 November 23, 2012, 11:54 pm

every time i try to downgrade it it has an error. HELP

Ricky January 22, 2013, 8:04 am

Have a iphone3 ios 4.2. would like to upgrade to 4.3 in order to download software from itune store.

I’m new to this.

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