how to load 4.2.1 without upgrading baseband?

ansabakhan · Feb 3, 2011, 08:11 PM

i deleted every thing from my phone by doing ERASE ALL , not i am stuck on apple logo , by reading different threads i know i deleted my ios.

not i was on 4.0.2 with unlockable baseband , is there any way i can load 4.2.1on my phone without upgrading baseband?

Norcalchavo · Feb 3, 2011, 08:42 PM

wondering the same thing, is there a way to upgrade to 4.2.1 without upgrading the 01.59.00 baseband?

hackthatphone · Feb 3, 2011, 08:43 PM

You have to dfu restore to get out of that erase mode. Hope you have SHSHs on file for anything lower than 4.2.1. Restore to 4.1 or lower then come back up to 4.2.1 to save that baseband.

Gizmotoy · 09:12 PM

Quote:

Originally Posted by hackthatphone

then come back up to 4.2.1 to save that baseband.

That's the part he's asking for directions for. How to update to 4.2.1 without updating the baseband. Unfortunately OP, I don't have an answer for you.

I suspect this may still work, but I couldn't say for sure:
http://www.dkszone.net/update-ios-41...nd-15900-21004

eastercat · Feb 3, 2011, 09:35 PM

Using blobs to preserve bb only works for iphone4. Otherwise, you have to use custom firmware.

silverblack · Feb 3, 2011, 09:42 PM

Quote:

Originally Posted by Gimzotoy

That's the part he's asking for directions for. How to update to 4.2.1 without updating the baseband. Unfortunately OP, I don't have an answer for you.

Go to his site (his signature) for detailed instructions on how to do it - hackthatphone

hackthatphone · Feb 3, 2011, 10:43 PM

Appreciate that, but my newer jailbreak/unlock tutorials are members only, which is why I never post and link to those on forums. The great majority of my site is accessible to all however.

Shanewilliams · Feb 3, 2011, 10:58 PM

http://forums.macrumors.com/showthread.php?t=1086025

ansabakhan · Feb 4, 2011, 09:23 AM

Quote:

Originally Posted by Shanewilliams

http://forums.macrumors.com/showthread.php?t=1086025

I am not sure what SHSHs i have saved .. i installed cydia almost a month back , so i believe i might have 4.2.1 shsh saved altleast...but i didn't notice what SHSHs it showed me as saved so this is just a guess .... is it necessary for me to restore to 4.1 before jb 4.2.1 in order to have unlock baseband?

or should i wait for pwnage tool to release where they have the option of not upgrading the basband or it doesn't matter in my case ? as i have already deleted the ios and have to get in 4.1 or lower before any thing ?

bripab007 · Feb 4, 2011, 11:33 AM

First off, you should probably start following notcom on Twitter, as he's the creator of Tiny Umbrella: http://twitter.com/#!/notcom

He mentioned in a tweet earlier that he updated the instructions on his website on how to upgrade an iPhone 4 while preserving BB: http://thefirmwareumbrella.blogspot.com/

ansabakhan · Feb 4, 2011, 11:55 AM

Quote:

Originally Posted by bripab007

First off, you should probably start following notcom on Twitter, as he's the creator of Tiny Umbrella: http://twitter.com/#!/notcom

He mentioned in a tweet earlier that he updated the instructions on his website on how to upgrade an iPhone 4 while preserving BB: http://thefirmwareumbrella.blogspot.com/

on his instructions

http://thefirmwareumbrella.blogspot....nd-update.html

4. Plug in your device and save SHSH (make sure 4.2.1 SHSH were saved, if not don't bother continuing)

i m in DFU mode and i dont think i can save SHSH while its stuck in DFU due to 'erase all' i did on my phone

coasterswim · Feb 4, 2011, 02:56 PM

Quote:

Originally Posted by ansabakhan

on his instructions

http://thefirmwareumbrella.blogspot....nd-update.html

4. Plug in your device and save SHSH (make sure 4.2.1 SHSH were saved, if not don't bother continuing)

i m in DFU mode and i dont think i can save SHSH while its stuck in DFU due to 'erase all' i did on my phone

Do you know your ECID or have you used TinyUmbrella before? You can either create a manual device with your ECID or select you device under Recent Devices and save all SHSH's without having to connect your phone.

labman · Feb 4, 2011, 03:41 PM

Iclarified have some assume and free tutorials and YouTube has some great ones too if your the video type and again free.

ansabakhan · Feb 6, 2011, 10:20 PM

when i did ERASE ALL i was on 4.0.2 and now if i try restoring (with custom file) to get on 4.2.1 i get 1601 error ? cant i go to 4.2.1 ? as i dont have any iOS on my phone .. i am confused

Applejuiced · Feb 6, 2011, 10:28 PM

Give it a shot.
Follow this tutorials below:
Windows: http://www.iclarified.com/entry/comm...commentsanchor
Mac: http://www.iclarified.com/entry/index.php?enid=13789

ansabakhan · Feb 7, 2011, 08:28 AM

after i did earse all and stuck on apple logo , Umbrella is not detecting the type of device and its firmware, basically its not showing any device connected.

has any one else had any luck with reading SHSH after erase all ?

lapocompris · Feb 7, 2011, 09:17 AM

What is the current (latest) base-band associed with i OS 4.2.1?
My current base-band under iOS 4.1 is 02.10.04, do I need to preserve it?

Steven Jobson · Feb 7, 2011, 09:47 AM

Quote:

Originally Posted by lapocompris

What is the current (latest) base-band associed with i OS 4.2.1?
My current base-band under iOS 4.1 is 02.10.04, do I need to preserve it?

You can't unlock it so don't even bother continuing.

Feb 3, 2011, 08:11 PM	#1
ansabakhan macrumors Demi-God Join Date: Mar 2010	how to load 4.2.1 without upgrading baseband? i deleted every thing from my phone by doing ERASE ALL , not i am stuck on apple logo , by reading different threads i know i deleted my ios. not i was on 4.0.2 with unlockable baseband , is there any way i can load 4.2.1on my phone without upgrading baseband?
	0

Feb 3, 2011, 08:43 PM	#3
hackthatphone macrumors 65816 Join Date: Jul 2010	You have to dfu restore to get out of that erase mode. Hope you have SHSHs on file for anything lower than 4.2.1. Restore to 4.1 or lower then come back up to 4.2.1 to save that baseband. __________________ Writing Mac tutorials for the iPhone since June '07. http://hackthatphone.com I use the following networks/SIMs: AT&T GoPhone, H2O, SimpleMobile, T-Mobile.
	0

Feb 3, 2011, 09:35 PM	#5
eastercat macrumors 68040 Join Date: Mar 2008 Location: PDX	Using blobs to preserve bb only works for iphone4. Otherwise, you have to use custom firmware. __________________ 32 GB black iPhone 4 (iOS 6.1, carrier unlocked, AT&T); 16 GB, wifi iPad (vers. 1); 2008 MBP 17" 2.5 GHz Penryn, 4GB RAM, 250GB HD 5400 rpm, 1920x1200 matte LED
	0

Feb 3, 2011, 10:43 PM	#7
hackthatphone macrumors 65816 Join Date: Jul 2010	Appreciate that, but my newer jailbreak/unlock tutorials are members only, which is why I never post and link to those on forums. The great majority of my site is accessible to all however. __________________ Writing Mac tutorials for the iPhone since June '07. http://hackthatphone.com I use the following networks/SIMs: AT&T GoPhone, H2O, SimpleMobile, T-Mobile.
	0

Feb 3, 2011, 10:58 PM	#8
Shanewilliams macrumors 6502a Join Date: Apr 2010	http://forums.macrumors.com/showthread.php?t=1086025 __________________ 16GB iPhone 4S(made it!);16GB Black iPhone 4(gone to a new home) iBook G4 1.2 1.25gb ram 250gb; Mid 2011 Mac Mini i5
	0

Feb 3, 2011, 08:42 PM	#2
Norcalchavo macrumors regular Join Date: Sep 2007 Location: Santa Clara, California	wondering the same thing, is there a way to upgrade to 4.2.1 without upgrading the 01.59.00 baseband?
	0

Feb 4, 2011, 11:33 AM	#10
bripab007 macrumors 6502 Join Date: Oct 2009	First off, you should probably start following notcom on Twitter, as he's the creator of Tiny Umbrella: http://twitter.com/#!/notcom He mentioned in a tweet earlier that he updated the instructions on his website on how to upgrade an iPhone 4 while preserving BB: http://thefirmwareumbrella.blogspot.com/
	0

Feb 4, 2011, 03:41 PM	#13
labman macrumors 604 Join Date: Jun 2009 Location: Mich near Detroit	Iclarified have some assume and free tutorials and YouTube has some great ones too if your the video type and again free. __________________ IP4+Hackintosh Pro Joining AT&T PM me get $25 Dev-Teams Blog My Twitter Can I JB/UL my device Click here
	0

Feb 6, 2011, 10:20 PM	#14
ansabakhan Thread Starter macrumors Demi-God Join Date: Mar 2010	when i did ERASE ALL i was on 4.0.2 and now if i try restoring (with custom file) to get on 4.2.1 i get 1601 error ? cant i go to 4.2.1 ? as i dont have any iOS on my phone .. i am confused
	0

Feb 6, 2011, 10:28 PM	#15
Applejuiced macrumors Demi-God Join Date: Apr 2008 Location: At the iPhone hacks section.	Give it a shot. Follow this tutorials below: Windows: http://www.iclarified.com/entry/comm...commentsanchor Mac: http://www.iclarified.com/entry/index.php?enid=13789
	0

Feb 7, 2011, 08:28 AM	#16
ansabakhan Thread Starter macrumors Demi-God Join Date: Mar 2010	after i did earse all and stuck on apple logo , Umbrella is not detecting the type of device and its firmware, basically its not showing any device connected. has any one else had any luck with reading SHSH after erase all ?
	0

Feb 7, 2011, 09:17 AM	#17
lapocompris macrumors regular Join Date: Jun 2009	What is the current (latest) base-band associed with i OS 4.2.1? My current base-band under iOS 4.1 is 02.10.04, do I need to preserve it?
	0


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