NOTE: You will need to do a backup of your iPhone so you don’t lose any data. Also must jailbreak your iDevice first. If you are unsure please search jailbreak at the top of the 123myIT website, there are loads of vides to show you how to jailbreak your iDevice.
This video will show you how to install Viber on iPhone 3G 4.2.1 firmware.
Step 1. Backup your information on your device.
Step 2. Wipe your iOS device by doing a restore. This process will set you iPhone back to factory defaults and give you a clean platform to start the jailbreak.
Step 3. Fully charge your iDevice. Open up the brown Cydia icon. It should look something like this.
Step 4. In Cydia go into Manage then Sources. Next go to Edit and then Add enter the Cydia/APT url.
At this stage enter cydia.iphonecake.com then tap Add Source.
Step 5. Tap iPhoneCake, and scroll down to AppSync OS 4.2 or match whatever firmware you are currently using.
Step 6. Download iTools, the direct link can be found on the Downloads section of the 123myIT website here. Install iTools. I tools is the program that will allow us to install the Viber app onto out iDevice.
Step 7. Download Viber from the downloads section here. Click the lin that says Viber for iPhone.
Step 8. Once downloaded open up iTools and use iTools to transfer the Viber app to your iDevice.
Pretty straight forward. And that’s how easy it is to install Viber on an iPhone 3G 4.2.1 firmware. The benefits to installing Viber this way as opposed to installing Whited00r is that you can keep your existing idevice firmware 4.2.1.
For more information on Viber you can check out their website here.
For more information on iTools software click here.
AMAZING!!! Thank you lots for all your enormous work!
You really save a lot of people from all the madness of trying to make some applications work on phones which are still working.
With your help I managed to install both Viber and FB on my Iphone 3G after looking one whole night the internet on solutions for this.
Real professional work! Thumbs up!
Quick Q: are you looking also at a solution for whatsapp for Iphone 3G IOS4.2.1?
Glad I could help out. Don’t forget to share my site 🙂
With Whatsapp I have not been able to get it working. I believe the Whatsapp servers are blocked.
hi matt this was awesome now i have viber on my iphone 3g but can find a way to whatsapp on i tried every thing i got whatsapp for the internet the older version and installed it through ifunbox but it says app to old can please help me with
ur awesome ,thanx alot
kindly help me how to install whattsapp on iphone 3g(4.2.1
As far as I know the whatsapp doesn’t work on iPhone 3G.
can u plz provide me a link
Link for which ?
A link for which?
How about version 4.1?
No 4.1 but i have Version : 2.2.0.
this is an excellent tutorial but i have one problem – when I try to add iphonecake as a source the verification times out repeatedly. is this just my internet connection?
Most probably, the iphonecake is downloaded from the internet.
thanks, I used a faster internet connection and it worked fine. but encountered another problem – cannot run itools or ifunbox on mac os 10.5.8, apparently not compatible. I got hold of a trial version of diskaid which did the job for viber
Glad to hear it worked out for you. Let me know if you find a nice free app that will put the apps on your phone whilst using a mac.
Thank you soooooooo much,
you are amazing ! 🙂
Thanks for your kind words I am glad it helped you out. Don’t forget to leave a thumbs up and subscribe.
My iphone 3G was corrupted, all my files has gone. Just followed your tutorial, “How to install viber on iphone 3G”. The only remaining word is iphone then the screen turns black. What would i do?
Hi dindo estoesta
Lets be clear does the phone power on ?
What comes up on the phone when you do this?
Yup,it s hooked up on usb. I forgot to mention, after backing up i also click the update and follows everything. When i open the itunes it says “windows has stop working”.
Did you need help with something ?
How can i restore my iphone 3G back from factory setting? Even w/out installing viber anymore. TY!
i could not find appsync ios 4.2 , there is only 4.0+! please help
Did you get this working ?
no it doesnt work! i tried * ios 4.2 and lower* also.
i could not find appsync ios 4.2 , there is only 4.0+! please help
Thank you for your work.
I’ve been struggling for a few days to install viber on my iphone 3G 4.2.1.
So, I backed up my phone, jailbroke it and followed the steps of your videos but… :
– I downloaded viber for iphone from another site (I can only get a .txt file on your site)
– Ifunbox tells me “error 800007e” when I try to install viber
– I found an old version of viber online, I installed it successfully through ifunbox, it apperas on my phone but doesn’t open itself…
Could you help me with that?
Make sure you have App Sync installed. Its important because the files wont start if you don’t have that downloaded to your phone.
You can use iFunbox or itools to put the app on your phone.
I started using itools then iFunbox, but ifun box started adding to much advertising so I moved back to itools.
Here is the link for the viber.
Make sure you have the .ipa extention on the end of the file. If you don’t then the file may look like a txt file because its will be an unknown file type.
Let me know how you get on and good luck.
this was a great tutorial. i just installed viber on my iphone 3g 4.2.1 ,just a few seconds ago.
works charm. thank you.
Great glad it worked out for you the Facebook messenger app should work well also if you use Facebook.
Hi, i have a problem with ur video, in cydia i can’t fine iPhoneCake, where can i indie.
thank you so much
Hi carlos de la garza
Make sure you have wifi access or 3G access.
Im here again, thank you so much for explain how make that, i made a mistake in the process, now is called AppCake, and works great.
Thanks again, now i have viber in my iPhone 3g
hi i jailbreak my iphone 3g and after jailbrek i cant get service it say no service can anyone help me?
Do you have any more info? What version did you jailbreak and which service not working phone calls or wifi?
Hey! Nice tutorial but I have a problem when I add the source
It says “sub -process:/bin/bzip returned an error code” and “some index files failed to download,they have been ignored, or old ones used instead.”
Please help I think this might be the reason why I can’t find AppSync for my version 4.2.1
No idea about that one. Is this when you are trying to add app sync?
Should be ok just use the older files and then test it ?
Thanks a lot for all your hard work.
I am having difficulties at the AppCake stage unfortunately. The options I have are:
– AppCake for iOS6
And both do not allow me to install as I need the AppCake for 4.2.1 just like you mentioned in your video.
I also tried the AppSync Unified that didn’t let me either.
Please help if you find the time,
Thanks for your feedback. Since the new iOS 8 release it seems that the app sync 4.2.1 has been removed. Can you try the App Sync 5?
And let me know if that works ?
Thanks for your reply Matt.
I tried both the AppCakes I have available and the Appsync Unified. Neither worked unfortunately. Any other ideas would be gratefully received.
In this case you might be out of luck. I havent heard from anyone if there is a workaround for this.
If you find anyway to fix please let me know.
Maybe google appsync 4.2.1 no longer working?
i am having same problem there are 3 options available but none of them can be installed. What to do plz help..
Hi Saugat dhakal, Is you phone jailbroken?
today I ve installed Viber on my iPhone 3G following instruction in your tutorial, but I cant get authentication code in SMS. I have working internet access on my iPhone and I entered valid phone number, but SMS simply dont come.
Not sure what you can do in this stage. Can you send the sms to another number that is working?
when I open iTools it says that iOS5 or later is required. How can I fix it?
Not sure you can. Since ios 8 was released the app sync was upgraded to ios 5. This means that the 4.2.1 app sync no longer works.
Thank you very much for your guiding step by step.
I have a problem still.
At the end, when I try to install ipa file from itools. it tells me that because of unauthorized the work will fail. after doing only 15% of job.
Please help me,
I am not sure this video works any more after the release of IOS 8. It seems the app sync 4.2.1 was scrapped.
Hi mate. I have problem with my viber. I have Iphone3G 3.1.3, 6.15.00, Carrier 5.1, whited00r7.1. When i put it viber2.2.0 everything is work. But when i leaved viber i can’t receive messages. I have a code for push notification and fixed. Still can’t receive messages. Can you help me pls. Thank you a lot.
Yes, I am not to sure about this. I haven’t used it in along time. I get the feeling some support for this was finished when Apple released ios 8.
i dun know whats happening. after installation it says
Install fail: Verification failed as the authority is invalid.
I jailbroke my iphone 3g v4.2.1,and I installed Viber.When I try to enter it(by typing my number for getting an SMS authentication code),it says YOU NEED TO UPGRADE YOUR VIBER VERSION…so,I cannot enter it nor use it,at all.Anyone got the solution?
You should be able to install a jailbreak version of Viber?
Same problem here. Found a appsync, installed a viber, and now it’s saying that I need to upgrade viber. Where to find jailbreak version of viber? Thank you