1) Download DiskAid.exe to access your iphones root settings and Ultrasn0w 1.2.7 for firmware 4.1,4.2.1
then unzip ultrasn0w 1.2.7 on your desktop.
2) Run DiskAid and put the two files that you unzip from ultrasn0w 1.2.7 to var/root/Media/Cydia/AutoInstall
3) Close DiskAid and reboot your iphone twice and be patient to wait up to 5 minutes to see the network carrier
of your iphone appearing.
4) restore your iphone from the back-up on your itunes.
I downloaded the redsn0w 0.9.6b5 and also the IPSW and then when i was doing the Jailback and unlock My Iphone 3g (Version 4.2.1(8c148) firmware 05.15.04)
I browsed th ipsw and then did the all steps.
i think u restore it to 4.2.1!
if u do so then u should again restore it to firmware 4.1 because now iphone 3g is not restoring on 4.2.1 so restore it 4.1 then jailbreak it!
hope this will help!
restored & updated via itunes
inserted a sim card to unlock
opened up redsnow (running as admin, im not sure if this helps)
selected my downloaded file of iPhone1,2_4.2.1_8C148_Restore
I did not turn the phone off until redsnow told me to
then put it in ftu mode when redsnow told me to
when redsnow accepted the Iphone the process took about 2 minutes before redsnow let the phone do the rest. The iphone rebooted about 3 minutes after that.
hi all i followed this guide step to step last week and confirms that it works, unfortunately there is a downside, my iphone 3g on 4.2.1 8c148 now has developed a gps fault due to the unlock phase it barely works and when it does it places me 100 miles out.
BY ALL MEANS YOU GET A FREE UNLOCK BUT BE AWARE THAT THIS HAS AFFECTED MOST USERS WHO HAVE CARRIED OUT THE ULTRASNOW 1.3
hi,
i updated my iphone 3g to ios 4.2.1 and jailbroken it using redsnow 0.9.6b6.now i erased my iphone content and settings from settings menyu.now i try restore the same version using itunes and restored but i unable jailbreak it.during jailbreaking process everything going fine but jailbroken.help me.
Hey
I have iPhone 3g, 8GB (Jail broke & Unlocked) version 4.1 and baseband 6.15.00 and Windows 7 and now i want to update it to version 4.2 so can anyone tell me whether i first have to update it from itunes or not?
from where i can get custom ipsw 4.2?
Hello, please could you help me?
I have an iPhone 3GS in the firmware 4.2.1. It was in the 5.12.01 baseband.
I tried to jailbreak and unlock it using redsn0w. After ir I entered in Cydia and installed ultrasn0w. After rebooting the system, my iphone keeps locked in apple logo and then after a few seconds it turns to recovery mode!
I am using Tinyumbrella but it is not working! Every time my iphone goes back to recovery mode!
I have read through all the questions and responses and have tried everything including renaming the apple firmware file with a ipsw extention, but I have no luck. When running the redsnow program, it does not recognize any apple firmware. I am trying to jailbreak an Ipad with a 4.2.1 IOS system. Please help.
Thanks!
hello im really stuck and would appreciate any help!, i just got this iphone 4 for christmas and its was running firmware 4.2.1 i needed to unlock it so i searched on google and found this, i jailbreaked and unlocked it and was installing something on cydia that required a reboot, i rebooted once and then on redsn0w selected right option ( boot to something) and it worked, then i did this again, but now my iphone is stuck in an apple logo/recovery mode loop, is not recognised by itunes and ive tried 1 million ways im desperate for help!! (i think my baseband is the 6.15.00) thanks!!
1. open Redsn0w use 4.2.1 original firmware
click on just put into DFU mode wait till the process is over
2. Launch Itunes, shift/option restore choose the 4.2.1 custom firmware (you can make it using pwnage tool or i can send it to you), the phone should restore without a problem from there!
I jailbroken and unlock my 3G iphone and it was working fine. I reset my iphone with erase all content and i am unable to use my iphone now. It does not restore using itune now. Please suggest how can i make my iphone usable. Itune gives restore error with error code 1015,
i have the same problem!
i guess all what we can do now is to restore our iphones with a custom IPSW
since i couldnt find any custom 4.2.1 ipsw for iphone 3g, im downgrading to 4.0, and waiting :/
hi i have problem in my iphone 3g i have this error1015 when im trying to restore my iphone using itunes, almost done in restoring suddenly this error occurs i did it twice same thing goes can anyone help me??
As i done what u said, the apple loge came to the screen and the it remains for a long time,
When i open the Itunes, it doesnt detect the phone,
Please reply me.
Torrentz is not allowed in saudiarabia, so please give me an other link to download the custom version.
can i make my phone work without custom firmware?
Please reply
Advance Thanks
@jocelyn go find snowbreeze for custom firmware for IOS 4(google it) and then just follow the instructions in how to pwned dfu mode so that itunes will accept your custom IOS and after that you can jailbreak it
pls hlep. why my iphone 3g could not activated? activation server could temporary unavailable..but my connection is working, i experience this after i connect on itunes and they restored. after restored it could not be activated shown on my iphone. pls help
dam this really worked!!!! i tried EVERYTHING and this really worked, thanx man and kevin also for the download link which is _3G_Custom_Firmware_421_.html create a free account then download and thats for the custom firmware, feels good to b outa that dam thing!!
After I have restore my iphone 3g with the custom restore 4.2.1 file, all I get is connect itune with a small info button on the bottom right, if you slide the unlock bar I only got emergey call screnn. Any body help !!
pls guys follow the instruction of the video step by step and download the regular firmware from the link which is given on this website only u will get success and for customer firmware pls follow this link file:///C:/Users/sunil/Downloads/[kickass.to]iphone.3g.custom.restore.firmware.4.2.1.8c148.ipsw.torrent
pls guys follow the instruction of the video step by step and download the regular firmware from the link which is given on this website only u will get success and for customer firmware pls follow this link
-3g-custom-restore-firmware-4-2-1-8c148-ipsw-t4782029.html
Hey guys, thanks for your informative posts. Pls I do have a question. My iphone runs on version 3.0.1. (7A400), with modem firmware 04.05.04_G. Is my iphone 3g, 3gs or 4g ? Pls help me out so that i can update to 4.2.1. Thanks yah all.
Please help me how to fix my iphone 3G b/c it keep on say no service or searching. I get signal sometime but some it goes to no service/searching for hours or days. This iphone was jailbroken but it was restore back top factory with a 4.2.1(8C148).
Note: Because after iOS 5.1 release, Apple stopped signing all previous firmware versions, the owners of the iPhone 4S will not be able to roll back the OS. The operation is only possible on the iPhone 4, 3GS, iPad 1 and both models iPod touch to iOS 5.0.1 (with custom files) and iOS 4.x if SHSH blobs and APTicket. IPad 2 users can downgrade to only iOS 4.x. Save SHSH blobs digital certificates can be as long as Apple signs the firmware.
As we mentioned above, we need APTicket SHSH blobs for iOS 5.0.1 or 5.0, downgrade available to users through the creation of custom firmware. However, this is true only for the devices with A4 chip (iPhone 4, 3GS, iPad 1 and iPod touch).
Step 4: Now you need to make restore with the firmware downloaded from step 1. Click on the icon iOS-device side of the iTunes. Now press Alt (Option) for Mac users, and Left Shift for Windows users on your keyboard and click Restore (not Update or Check for updates) and release the button.
Step 5: Wait until iTunes will install the firmware on the device. Sometimes when you restore the firmware on iOS 4.3.5, iOS 4.3.4, iOS 4.3.3 and iOS 4.3 in iTunes, you may receive an error 1004, 1015 or 1013. All right, ignore it, because you have successfully installed the firmware on the device.
You can only restore your phone with custom firmware modified with Pwnage Tool but this software is only available for Mac. Sn0wbreeze for Windows does exactly what Pwnage Tool does and creates a custom IPSW file to restore your iOS.
ipswDownloader operates as a simple interface for Apple firmware updates, allowing users a greater degree of choice. As iPods and iPads are usually simply updated to the most current version automatically, the ability to choose can offer a number of practical advantages at the potential cost of stability and safety. Users may wish to avoid a particular update for compatibility issues, privacy concerns or simply to maintain a jailbreak. Apple does not support firmware changes in this way, so warranty and support may be affected. ipswDownloader is a stripped down single window, with available updates shown in a list format. Users simply click a version and the rest is down automatically. Additional information on firmware is available alongside Apple's official notes for most products, providing a more detailed analysis than usually available.
ipswDownloader is a useful way to gain a greater degree of choice with Apple products. Those concerned about firmware updates can browse each option and change at will with the user-friendly app. Services like these are generally not approved by Apple, however, so warranties should be checked.
If you have an iPhone 3G that you want to jailbreak and unlock, you may need to use a custom IPSW file to restore your device. A custom IPSW file is a modified version of the official Apple firmware that allows you to install third-party apps and tweaks on your iPhone. In this article, we will show you how to download and use a custom IPSW file for your iPhone 3G running iOS 4.2.1.
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