Problems jb iPhone 4 on 4.2.1

[narsytojas]

Hi everyone! Had iPhone 4 for 2 months, jb on 4.1 with limera1n easy peasy, no problems, but when upgraded to 4.2.1cannot jb. redsnow loads kernel, and when reboots iPhone loads software for few seconds and stops, tried about 10 times now and still no luck, hopefully updated jb will come out shortly

[iYeow]

You should downgrade back to 4.1 and jailbreak again & wait for a tethered jailbreak for 4.2.

It will be awhile b4 a new jailbreak is out

[narsytojas]

don't think I can, allready upgraded baseband, so I think it's to late now? I wish I've stayed on 4.1 next time i will be careful with updates

[iYeow]

You can downgrade your firmware to 4.1 , I think apple is still signing 4.1 firmware, try it now. You have to download the 4.1 ipsw from another source like here : iPod, iPhone and iPad Firmware Download
And then Do the Shift + restore to 4.1 ipsw.

[narsytojas]

I got all of them, give a go tomorrow, hope it works, thanks for that

yes, iv'e done it!!!!
can confirm to everyone, if you saved your .shsh blobs you can restore to 4.1

thanks for support

[xChRoMaTiCx]

You can downgrade your firmware to 4.1 , I think apple is still signing 4.1 firmware, try it now. You have to download the 4.1 ipsw from another source like here : iPod, iPhone and iPad Firmware Download
And then Do the Shift + restore to 4.1 ipsw.

Dont Apple immediately stop signing old firmwares when they release a new one?

[narsytojas]

Dont Apple immediately stop signing old firmwares when they release a new one?

i dont think is anything to do with apple in this case, is your saved .shsh blobs with tiny umbrella, Downgrade iOS 4.2.1 to 4.1 / 4.0.2 / 4.0.1 on iPhone 4, 3GS, 3G, iPod touch and iPad | Redmond Pie
thats a complete guide if anyone interested

[harker85]

And if we don't have the .shsh blobs stored? then what? I wish I would have heard about those before I updated.

[iYeow]

If you don't have shsh blogs, then you cannot downgrade your firmware.

[eboosted]

Hey Narsito, I'm getting ready to upgrade to 4.2.1, but after reading your post I got afraid to loose the JB possibility.

On the dev team blog they said the tethered JB will work just fine, you just need P C to boot into JB state.

[narsytojas]

If I was you don't bother with 4.2.1 nothing special about it, just good new SMS ringtones, and I had loads of problems with jb, like I said before try to do it about 10 times - no luck , so I'm back with 4.1 and pleased with it

[iYeow]

If I was you don't bother with 4.2.1 nothing special about it, just good new SMS ringtones, and I had loads of problems with jb, like I said before try to do it about 10 times - no luck , so I'm back with 4.1 and pleased with it

That's the way, stay at 4.1 and be happy because most of Cydia stuffs have been ported for IOS 4.1 only.
Why bother going to 4.2.1 and have tons of problems , worst as it is a tethered jailbreak for most devices