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10-16-2010, 01:34 PM #1
Can a 3G with 4.1 & BB05.14.02 be unlocked?
I was just given a used 3G 8GB iPhone already on 4.1 firmware. The Base Band reads: 05.14.02 from a Canadian Fido network. Model # MB633C
I get the impression from searches that it can be jailbroken with greenpois0n, BUt not unlocked. Is that correct?
Can this be downgraded, then unlocked? Or is the baseband immovable?
10-16-2010, 01:55 PM #2
Your 3g cannot be jailbroken by GreenPoison and cannot be unlocked.
However, you can jailbreak with Redsn0w 0.9.6b1 at 4.1 and use it as an ipod touch.
Last edited by iYeow; 10-16-2010 at 01:55 PM. Reason: Automerged Doublepost
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10-16-2010, 02:12 PM #3
Is it possible to downgrade the firmware/baseband?
10-16-2010, 02:26 PM #4
You can downgrade your 3g to 3.xx without the need for shsh blogs. All you have to do is put your iphone into DFU mode and do the Shift + Restore to 3.xx and then use kick out of recovery from TU when error 1015 pops up.
But you cannot downgrade the baseband.
Last edited by iYeow; 10-16-2010 at 02:26 PM. Reason: Automerged Doublepost
10-16-2010, 02:59 PM #5
Jb the phone and then go to Cydia and download Fuzzyband. It will check to see if your phone has the 5.8 bootloader to downgrade the baseband. If it shows you have any other bootloader, you cannot downgrade the baseband.
Make sure you download the Fuzzyband that supports 5.14.02, there's another one that's old so you'll want the new one.
10-16-2010, 07:41 PM #6
I followed some instructions to downgrade from 4.1 to 3.1.3 or 3.1.2. I then tried to make the custom firmware with pwnage 3.1.5 to jailbreak and install cydia. However, when in DFU mode I tried installing the custom firmware (I tried both 3.1.3 and 3.1.2, iTunes says that the firmware files are incompatible. I also tried Redsn0w 0.9.4 with the 3.1.3 firmware, but it did not recognize the FW (downloaded from MMI website). When I tried with 3.1.2 FW it's talking about booting up tethered only. I don't know if that is the right method.
Essentially I am trying to get it JB so I can try out the fuzzyband that Anniex423 has suggested to see if I can downgrade the base band from 05.14.02. But I'm not there yet. ANy other suggestions welcome
10-16-2010, 10:18 PM #7
When you have downgraded to 3.1.2 or 3.1.3, you have to jailbreak first with Redsn0w 0.9.4, put your iphone into recovery mode and restore to custom firmware.
10-16-2010, 11:17 PM #8
I used jailbreakme.com and got Cydia, installed Fuzzyband and downgraded BB to 05.13.04 and ran Ultrasn0w.
So now it is working on 3.1.3
I Guess I can now upgrade to 4.0.1?
10-16-2010, 11:42 PM #9
You sure can. Just make sure you're using a custom firmware or you're just gonna update your baseband again.
Sorry, I thought you said 4.1. You said 4.0.1
You'll wanna go to 4.1. 4.0.1 is super laggy on a 3G phone.
Last edited by i.Annie; 10-16-2010 at 11:42 PM. Reason: Automerged Doublepost
10-16-2010, 11:52 PM #10
Did you make your own custom 4.1 or did you download it from somewhere?
10-16-2010, 11:56 PM #11
I prefer to make my own. I've had faulty custom fw's downloaded from the net. Use Sn0wbreeze 2.0.2.
I assume you have an AT&T SIM since you were able to use jailbreakme. Just be sure in Sn0wbreeze expert mode to deselect activate. You wanna activate your phone with your SIM to avoid problems like push and YouTube not working. If you run into errors during your restore to the custom fw, run iReb to bypass and you'll be fine.
10-17-2010, 11:57 AM #12
Well I downloaded Sn0wbreeze 2.0.2 and installed the dotnexfx on my PC side of my mac, downloaded the 4.1 FW for the 3G. When I run SB it begins to extract then I get a "Failed" message as follows:
sn0wbreeze has faile to creat your custom IPSW. Try again. An erroe occured creating the form. See Exception. InnerException for details. The error is: The tye initializer for 'Manzana.MobileDevice' threw an exception.
I've tried several times with no luck.
Any suggestions welcome.
10-17-2010, 02:20 PM #13
:/ I can't tell what the problem is, Sn0wbreeze never gave me any errors before. All I can say is try another 4.1 ipsw and make sure it is for your device and in the right format. The fw should start with iPhone1,2 and end in .ipsw. If you did do that and sn0wbreeze isn't responding, I'd say try again on another computer.
Or try this:
HOW TO: Jailbreak iOS 4.1 On iPhone 3Gs With PwnageTool [ Mac - Unofficial ] | FSMdotCOM
10-17-2010, 04:28 PM #14
Kick it out again into Home screen, run iReb 4.1, first, until you are ask to restore with snowbreeze firmware. Make sure you have iTunes 10