unlocking iphone 3gs 4.3.5

[jaswanthkoppu]

hi i'm new to this forum....

i have iphone 3Gs 4.0 with 5.13.04 baseband..

i want to upgrade to 4.3.5 and unlock it ..tell the best way to unlock it ..

thx in advance ..

[ihappy]

hi i'm new to this forum....

i have iphone 3Gs 4.0 with 5.13.04 baseband..

i want to upgrade to 4.3.5 and unlock it ..tell the best way to unlock it ..

thx in advance ..

Stay where you are would be my recommendation.

4.3.5 has a tethered jailbreak and doesn't work nearly as good as an untethered jb. If anything the highest you should go would be 4.3.3 as the jb is the last good untethered one but this is only possible if you saved your shsh blobs. As far as I know Apple seems to still be signing 4.1 for the 3G/3GS.

As far as the unlock goes, since you are on the 05.13.04 bb I would preserve that baseband by creating a custom fw if you plan on upgrading or simply jb your device and install cydia and then ultrasn0w.

[jaswanthkoppu]

what is shsh blobs..how do i save it ?

[ihappy]

what is shsh blobs..how do i save it ?

shsh blobs are signatures from Apple needed for verification purposes. They are used to downgrade your fw to an earlier version in case you don't like the fw you are on or accidently upgraded by mistake.

They are usually saved using Tiny Umbrella. This thread will tell you everything you need to know about using TU and downgrading/upgrading your fw:

[How-To] Using tiny umbrella to update/downgrade/restore

[jaswanthkoppu]

thx for the reply ...

I heard that by using sn0wbreeze we can preserve the baseband and install the fw on the phone ..it automatically jailbreaks the phone and add cydia next by adding ultrasnow snow we can unlock it ...

is it right ..do i need to save the shsh for this procedure also ?

how can i use this shsh saved file(4.0) while upgrading to 4.3.3?

my phone crashes all the time ..so i want to upgrade and avoid all the crashes...

[iYeow]

Yes, restoring to custom fw of 4.3.3 will preserve ur bb but you still need 4.3.3 blob.

[ihappy]

Yes, restoring to custom fw of 4.3.3 will preserve ur bb but you still need 4.3.3 blob.

+1. Any fw besides the 4.1 will require the use of shsh blobs.