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Limera1n baseband question

K

Kerto

macrumors newbie
Original poster
Jul 6, 2010
8
0
Ok so last night I was checking what was the latest with the jailbreaking scene after taking a break from messing with my phone for a while. I saw Limera1n had been released and was eager to give it a go. I restored my iphone that was jailbroken on 4.0.1 with the jailbreakme.com exploit, to 4.1 using itunes. Here I hit a few problems as the restore failed after the "writing firmware" bar with this error

""The iphone "Iphone" could not be restored. An unknown error occured (1004).""

The phone then proceeded to boot into recovery mode. I tried again and got the same error. I then tried in DFU mode and the error occurred in the same place as before. Now getting rather concerned I did some googling. Someone suggested kicking the phone out of restore mode with TinyUmbrella. To my relief the kick worked and the phone rebooted now with a different screen asking to be plugged into itunes and the words "emergency call only" coming up in lots of different languages. When I plugged it into itunes I chose to set it up using my backed up settings and presto I had my phone back now on 4.1.

I then proceeded to do the Limera1n install. This went much smoother ironically and I soon had Cydia installed. It was now pretty late so I went to bed.

Today I read about the release of greenp0ison and cursing my impatience went to confirm that my baseband had indeed been updated by the restore. This is what I saw.



Now it is my understanding that what I have done shouldnt be possible using L1merain. Have I done something weird? I installed Ultrasn0w today to test and although I cannot confirm it is unlocked because I only have one SIM I have not encountered any issues and I can make calls as I usually would.

Does anyone have an explanation?

I apologise in advance if I am just not understanding something.
 
if you had tinyumbrella running the tss server when you did the upgrade the baseband doesn't get upgraded, which is why you have to kick it out of recovery (the phone won't boot the first time if the baseband is the incorrect version)
 
The exact same thing happened to me (same starting point, same steps, same error message, etc.) using limera1n. I ended up running 4.1 on my iPhone4, jailbroken with the 1.59.00 baseband.

I was not running TU during the upgrade process until I had to use it to get out of DFU mode. IOW, I got the 1004 before I was running TU.
 
I wasn't running TU either. Interesting I am not the only one. Has Geo snuck in an update or something I wonder.
 
Kerto said:
I wasn't running TU either. Interesting I am not the only one. Has Geo snuck in an update or something I wonder.
Click to expand...

I don't see where Geo or limera1n comes into play since they have nothing to so with upgrading to 4.1 in iTunes.
 
MikePA said:
The exact same thing happened to me (same starting point, same steps, same error message, etc.) using limera1n. I ended up running 4.1 on my iPhone4, jailbroken with the 1.59.00 baseband.

I was not running TU during the upgrade process until I had to use it to get out of DFU mode. IOW, I got the 1004 before I was running TU.
Click to expand...

Check your Host files and you will both probably find they are not pointing to Apple but to Saurik. Since baseband updates must also be signed by apple and Saurik is not capable of signing baseband "same as Tiny Umbrella" your Firmware updated but the baseband did not. This is also the reason for the 1004 error. I think it is very likely that you may have just demonstrated that you don't need tiny umbrella to preserve the baseband you can also do it with Saurik.
 
Ah yes you are correct. I have this line in my hosts file.

74.208.10.249 gs.apple.com

Mystery solved. :)
 
nebo1ss said:
Check your Host files and you will both probably find they are not pointing to Apple but to Saurik. Since baseband updates must also be signed by apple and Saurik is not capable of signing baseband "same as Tiny Umbrella" your Firmware updated but the baseband did not. This is also the reason for the 1004 error. I think it is very likely that you may have just demonstrated that you don't need tiny umbrella to preserve the baseband you can also do it with Saurik.
Click to expand...

I will check the host file when I get home. I know I have never changed it manually so TU must have although I can't find any documentation in the TU readme indicating it does this on a Windows PC.
 
MikePA said:
I will check the host file when I get home. I know I have never changed it manually so TU must have although I can't find any documentation in the TU readme indicating it does this on a Windows PC.
Click to expand...


I know TU does alter the hosts file but I do not know whether that is just temporary or not. I know this because my hosts file was read only and TU gave me an error and once I went and changed it the error went away.

ETA: I just checked my hosts file on my laptop and it had 74.208.10.249 gs.apple.com in it. I never added it but I have used TU to capture SHSHs on it.
 
The same thing happened to me last night. I restored from 4.0.1 to 4.1, but I got the "1004" error. I had ran Tinyumbrella previously to back up my SHSH, but had already turned it off by the time I restored. When I got that error, I opened up TinyUmbrella and used the "Kick out of recovery" feature and found, to my surprise, that I had 4.1 installed successfully, but I still had my 4.0.1 baseband (1.59.00). I didn't check my hosts file, but after reading this and other threads, that must be the explanation.
 
Looks like it's hard to mess up the BB upgrade! Many are keeping 1.59.00 automagically! That is pretty cool.

Can't wait to get back to my home pc later this week so I can play. I've been on the road since Wednesday while all this news has been coming out. Taking this as a benefit as several revisions will come out by the time I get home...perhaps saving me from my usual impatience!!
 
foxnews1 said:
what is file name? I am at work and can't check it.
Click to expand...

How can Downgrade WITHOUT Tiny Umbrella (Manually)

Credit for step by step by: kre62 and Sidewinder

1. Make sure your device has an iOS 4.0 or 4.0.1 SHSH saved on the Cydia server. You can do this by opening Cydia and looking at the top of the home screen just below where it says "Home - Cydia". If yes, then proceed to the next step.

2. Download the firmware for your device to your computer from here (or some other source):

http://ios.e-lite.org/

For example, if you have an iPhone 4 and an SHSH for iOS 4.0.1, click on the text "historical (click to expand)" at the bottom of the page and download the iPhone 4 "4.0.1 (8A306)" firmware.

3. Manually edit your hosts file to include this line:

74.208.10.249 gs.apple.com

Windows: Open Notepad as an administrator. The hosts file is in windows\system32\drivers\etc\ The file does not have an extension, so change option to All Files to find it.

OS X: go here - http://www.iclarified.com/entry/index.php?enid=7556

4. Open iTunes, select your iPhone in the device list, then hold shift (option for Mac) and click restore. Locate and "Choose" the firmware you download in step 2 and click on "Restore".

If you performed all the steps correctly, iTunes will now restore your iPhone to the version of firmware selected in step 2.
Click to expand...

Source: Jailbreaking FAQ and commonly use terminology, + Guides
 
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