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iPhone iPhone 3g, 4.2.1, 05.15.04 jailbreak/unlock
- Thread starter zedder17
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CDMA does not use a sim card. So, it must be a GSM. Can you call your provider and find out.
Also, check to make sure your sim works.
I am not sure if it makes any different, in US if we use it with T-Mobile, we have to disable 3G in the setting. I am not sure if it applies to Virgin.
Do you have a friend who is with Rogers you can borrow a sim for 2 minutes to test the phone?
good job. If you find 4.2.1 is too slow on your 3g phone, you can always go back down to 3.1.3.
Hi Crystal-RX
Just out of curiosity. I have the BB 05.15.04 with 4.2.1 on boot loader 05.08. I noticed you asks the first poster this question but they did not have this boot loader. Am I able to downgrade...if so how?
So far I have jailbroken the phone using redsn0w and installed cydia. I tried using Fuzzyband to downgrade but it isn't working. I am lost.
Can I restore the phone without losing 05.08 as my boot loader?
thank you in advance.
Just out of curiosity. I have the BB 05.15.04 with 4.2.1 on boot loader 05.08. I noticed you asks the first poster this question but they did not have this boot loader. Am I able to downgrade...if so how?
So far I have jailbroken the phone using redsn0w and installed cydia. I tried using Fuzzyband to downgrade but it isn't working. I am lost.
Can I restore the phone without losing 05.08 as my boot loader?
thank you in advance.
Here is what you need to do;
1. Jailbreak your phone with redsn0w 0.9.6rc16
2. install fuzzyband from Cydia.
3. Run Fuzzyband, and it will downgrade your phone baseband to lower version.
4. install ultrasn0w 1.2.5 to unlock it.
5. Your phone is unlocked.... enjoy your unlock phone.
redsn0w version has nothing to do with fuzzy band. You download/install fuzzyband from Cydia. So, if your phone bootloader is 05.08, then fuzzyband will downgrade your phone baseband to lower version.
So, did you jailbreak your phone and it has Cydia icon on your phone?
I have Cydia installed and I just ran Fuzzyband and it says:
Bootloader Version: 05.08 [G2M3S2]
Baseband Version: ICE2-05-15.04
Phone OS Version: 4.2.1
then it says "Not Supported"
I have Cydia installed and I just ran Fuzzyband and it says:
Bootloader Version: 05.08 [G2M3S2]
Baseband Version: ICE2-05-15.04
Phone OS Version: 4.2.1
then it says "Not Supported"
Weird...It works when I had 4.1 firmware on my phone. Only explanation I can see is that fuzzyband downgrader has not been upgrade to work on 4.2.1 (in my opinion).
Can you run your phone to tiny umbrella and see if you have blob for 4.1? if yes, then downgrade it to 4.1, then use fuzzyband to downgrade the baseband. If you don't have blob, then downgrade it to 3.1.3, then use fuzzy band to downgrade its baseband.
once you've done so, use custom firmware to upgrade it back to 4.2.1.
Shoot I was thinking the same that is not available for 4.2.1. I don't have a blob for 4.1. To be honest this phone was just given to me and the person "accidentally" upgraded. how do I downgrade it to 3.1.3?
1. Download 3g 3.1.3 to your computer.
2. Put your phone into DFU mode, hit shift + restore (if you have PC) or Option + restore (if you have mac), and then point it to 3.1.3 firmware.
3. Itunes will restore the firmware for you. At the end, it will give you a 1015 error.
4. Open tiny umbrella, click on your device, then hit exit recovery.
5. your phone will boot up normally to activation screen (USB , Itunes and emergency bar at the bottom)
K...got Cydia back on. I will try the steps outlined by you and I will give you an update tomorrow. I'm tired now!
Thank you so much for your help. Really appreciate it.
No problem. I just look at Fuzzyband from Cydia. It only supports to 4.1.
Hi Zedder17. Can you let me know if you lost your GPS functionality? If so, I guess that means that apps like Maps won't work?
Just did a re-install of 4.1 on my iPhone and it says the same. Not supported for ICE2-05.15.04
Were you able to open fuzzyband in Cydia? it clearly states it support 4.1. I did it previously and I know it works.
Hi, davidcom,
I just checked...I opened Maps and it found our location quickly and accurately! So, it looks like the GPS functions were not affected on this phone...hope this helps!
Once thing I did notice is that the battery life is still showing a full green bar at 100%....my wife charged it yesterday afternoon and was using it for a bit yesterday as well as today...I thought it was kinda weird that it was at 100% still, so this morning I downloaded a battery app, and it showed the same 100% charge! I'm gonna have to keep an eye on this....hopefully it is reading correctly and I won't find it powered off at some point cause the battery drained completely!
Has anyone ever run into this before??
I just checked...I opened Maps and it found our location quickly and accurately! So, it looks like the GPS functions were not affected on this phone...hope this helps!
Once thing I did notice is that the battery life is still showing a full green bar at 100%....my wife charged it yesterday afternoon and was using it for a bit yesterday as well as today...I thought it was kinda weird that it was at 100% still, so this morning I downloaded a battery app, and it showed the same 100% charge! I'm gonna have to keep an eye on this....hopefully it is reading correctly and I won't find it powered off at some point cause the battery drained completely!
Has anyone ever run into this before??
Were you able to open fuzzyband in Cydia? it clearly states it support 4.1. I did it previously and I know it works.
I finally got it to work! Took me a bunch of tries to get the right order I suppose but its now downgraded and unlocked.
Thanks for you help/guidance!