If you have older baseband, you can go straight to using ultrasn0w. You can update to iOS 4.2.1 from iTunes but this will update your baseband and require the use of the iPad firmware. Here are the steps to unlock, the process is basically the same with Pwnage or redsn0w:
[CRACKED] Iphone 3g Firmware 4.2.1 Custom Download
There is no unlock for you iphone, why? Like you pointed out: because of your firmware baseband. Why? Sorry, dont know the answer for that one. It seems it would have some special attribute which no one has been able to crack yet, so sorry.
I have a 3G iphone running 4.2.1 with 05.15.04 firmware that I have jailbroken and am trying to unlock. I tried the ultrasnow, to no avail, but just read here that it might be because of my firmware.
hello, i am new to jailbreak/unlock for iPhone. I have iPhone 3G and i am currently contract with AT&T but i want to jailbreak my iphone 3G only and unlock it later in the future for overseas use. my 3G is the latest firmware i updated from iTunes is 4.2.1 modem firmware is 05.15.04. can anyone help how do i jailbreak my 3G iphone but without upgrade to iPad firmware? and which software i need to download is it the redsnow, ultrasnow or pwnetool using windows? and once i download one of them do i need to download the firmware as well? thank you please help step by step the easy way and for dummies like me, thank you.
I have upgraded my iphone 3GS to 4.2.1 and baseband 06.15 and have successfully unlocked it. I want to know if its safe to sync my phone with iTunes. I just want to ensure that itunes will not undo my unlock.
i had the same problem. after 48 hours of research this is what worked for me. TESTED AND WORKINGDownload these:Snowbreeze 2.9.1Red SnowiOS 4.2.1 FWstep 1: Run Snowbreezebrowse for your iOS 4.2.1 FW locationChoose EXPERT MODEThen GENERALGo to general tick on HACKTIVATE (tap next til u reach home)***Finally create IPSW.(it will be saved on desktop)***step 2: Launch Red Snowbrowse again for your iOS 4.2.1 FW locationTick on PWNAGE DFU MODE (follow the instructions that follows)step 3: Launch iTunes (recovery message will appear. click OK)Hold SHIFT while clicking on RESTORE on iTunes. Locate the iOS firmware created by snowbreeze (usually saved on desktop) (see *** on step 1)
Hi all, i have iPhone 3G, 4.2.1 and baseband 06.15.04. I have jailbreak successfully using redsn0w 0.9.6.b4 and installed cydia also. Now, how can i unlock my iphone. Now working perfectly in vodafone but need to unlock. Anyone Help pls??
I have jailbreak my 3g iphone 4.2.1 firmware 05.15.04 and have tried to unlock but when I insert any SIM card it just continue to search. I did install ultrasn0w. What else do I need to do for the phone to unlock.
I am using a iphone 3g on 4.2.1 firmware and i am trying to upgrade the BB to 6.15 but everytime i do it it always gets stuck on the uploading ramdisk page. I am using redsn0w beta 6 and it is running on xp compatibility mode and as administrator on windows vista please somebody help me and thank you to anyone who replies
Redsn0w 0.9.6b5 jailbreaks iOS 4.2.1 but also provides the added ability to install baseband firmware that can be unlocked for the iPhone 3GS and iPhone 3G. For other iOS devices, redsn0w 0.9.6b5 will simply jailbreak the device but some models will be a tethered jailbreak.
1) Back up iphone to itunes2) update firmware to 4.2.1 from itunes.3) download redsn0w 0.9.6rc16 and ipsw firmware 4.2.14) unzip redsn0w and run as Administrator.5) browse for ipsw firmware 4.2.1 then click next.6) turn off iphone then connect to pc7) check install cydia and battery percentage first then run again redsn0w and check install ipad baseband. note:install cydia and ipad baseband separately8) click next the follow intructions on entering recovery mode.9) then finish
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
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 itunesinserted a sim card to unlockopened up redsnow (running as admin, im not sure if this helps)selected my downloaded file of iPhone1,2_4.2.1_8C148_RestoreI did not turn the phone off until redsnow told me tothen put it in ftu mode when redsnow told me towhen 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.
hello i have a iphone 3g on os 4.2.1 with the bb 5.15.i tried this an its good till the jailbreaking prossess were it attempts to get the ipad bb files then the entire applications shuts down. my system specs are win vista, 2.66 single core p4, 2 gig ram please help my wifi dont work an i want to jailbreak
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.
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!!
I tried the tips for re-jailbreaking iphone 3gs 4.2.1 with 6.15 base band, but its a no go for me. I keep getting a white screen when I try rebooting it with tethering, and it goes no where. I hard reboot it and try again. I tried re-doing the jailbreak, still no go, got the white screen when it tried starting up.
1. open Redsn0w use 4.2.1 original firmwareclick on just put into DFU mode wait till the process is over2. 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 have the same problem!i guess all what we can do now is to restore our iphones with a custom IPSWsince i couldnt find any custom 4.2.1 ipsw for iphone 3g, im downgrading to 4.0, and waiting :/
i have done the redsn0w 0.9.6b5 jailbreak, bb update to 6.15.00 and installed ultrasn0w 1.2 tooo on iphone3gs 4.1 and rebooted the phone.but it doesnt make much difference,but for the thing that my phone is jailbroken,i get a message saying restricted network : your selected cellular network is restricted.you can choose a different network in settings pls help (i tryed and it woks with other cellular company sims so its like half cracked)
Since various exploits, such as the limera1n Exploit, are fixed in the bootrom since version Bootrom 838.3 and because iOS versions 5.0 and above includes a nonce in their SHSH hashes, downgrading newer devices is not as simple. Blobs must be stitched into a custom firmware, and restored to in Pwned DFU Mode.
Yeah, it might sound obvious (especially if you have a 3G and not a 3GS), but if you have installed a custom firmware (hacktivation, desimlock...etc.) back in the days, you also must have activated multitask management and homescreen wallpaper by redsn0w, pwnagetool or some other way.But it is actually an insane idea on the old iPhone 3G...
I'm quite sure that most of apps you want to download and use are not available for the iOS 4.2.1 anyway.So, use the mobile websites, this works pretty well for Twitter for example (if you ever tried to launch Twitter's official app on an iPhone 3G, you know what I mean).
If these little tips do not work for you (or you want MOAR). I can suggest you to take a look at whited00r, which is a custom firmware (based on iOS 3.1.3) dedicated to bring the old Apple devices their original speed with new features and design directly coming from iOS 7.
Current version is ultrasn0w 1.2.3, download in Cydia (unlock for iPhone 4, iPhone 3GS, iPhone 3G, firmwares 3.0-4.3.3; it supports basebands 01.59.00, 04.26.08, 05.11.07, 05.12.01, 05.13.04, 06.15.00) 2ff7e9595c
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