can I update to 4.2.1 ?

[Tex-Twil]

Hello,
I read several times the dev-team's article but it's rather confusing. I'm not able to determine if there is a way for me to update to 4.2.1.

My config is:
iPhone 3GS
iOS 4.0
Baseband: 04.26.08
Boot Loader version: ICE2_BOOT_06.04_G2M3S2
SHSH from 3.1.3 till 4.1 on Cydia

I would like to update to 4.2.1 only if I can unlock and have an untethered JB.

Is that possible ?

I found this iClarified guides to add a firmware bundle and this one to install 4.2.1 but I'm not sure if this will work for me and preserve my firmware.

Thanks for your help.

PS: I have a mac

Tex

[Cowboy]

You need a custom ipsw to save your baseband

[Tex-Twil]

You need a custom ipsw to save your baseband

where can I get it ?

[Cowboy]

pm iyeow or x98car

[Tex-Twil]

pm iyeow or x98car

ok I will but isn't there a more official way to get it ? I supposed I'm not the only one with this configuration.

cheers

[Cowboy]

Are you on mac or pc

[Tex-Twil]

mac

[Cowboy]

Pwnagetool will create a custom Ipsw file

[Tex-Twil]

So you say that I can simply use PwnageTool 4.1.3 to JB my iPhone ? It will preserve my current baseband and will be untethered and unlockable

[ihappy]

So you say that I can simply use PwnageTool 4.1.3 to JB my iPhone ? It will preserve my current baseband and will be untethered and unlockable

Use Pwnage Tool to create your cfw to preserve your baseband. If your 3GS is the old boot then you should have no problems getting an untethered jailbreak at 4.2.1. If its the new boot then I would recommend staying at a lower firmware to stay untethered.

[Tex-Twil]

Use Pwnage Tool to create your cfw to preserve your baseband. If your 3GS is the old boot then you should have no problems getting an untethered jailbreak at 4.2.1. If its the new boot then I would recommend staying at a lower firmware to stay untethered.

I posted my boot loader version earlier:

Boot Loader version: ICE2_BOOT_06.04_G2M3S2

Is it "old" or "new" ?

[lillstar12]

iPhones produced after week 40 2009 have the new bootrom. I could be slightly out but thats from memory

to find out look at serial number under settings/general/about and if the 4th and 5th number are lower than 40 you have the old boot.

[Tex-Twil]

the serial number is
XXX23XXXXXX. I also checked and my IBOOT version is 359.3 (old one)

So I should be able to JB simply as usual:
- get pwnagle tool
- get official 4.2.1
- run pwnagetool on the firmware to create a custom fw
- "option" restore in using iTunes

But what means the dev-team's blog entry :

If you have an old-bootrom 3GS and are already unlockable but want to get to 4.2.1, please wait til we release an “unofficial” bundle for you. Read no further.

[iHeartMyiPhone]

But what means the dev-team's blog entry :

They released the bundle. Scroll down and look at Update #3.

[Tex-Twil]

ok so I should follow first this tutorial to patch pwnagetool. Can I then simply use it to Jailbreak ?

[Tex-Twil]

ok so I should follow first this tutorial to patch pwnagetool. Can I then simply use it to Jailbreak ?

is it all I have to do ?