Do not try updating to 4.2.1 using tiny umbrella on iphone 4 yet

[Simon]

Just fyi for anyone wanting to try the preserve baseband trick on iPhone 4 for going to 4.2.1 this is an update from Semaphore, creator of tiny umbrella:

Twitter

In a nutshell, do not try it yet.



Edit: Could a mod please fix my title, supposed to be "iPhone 4" between on and yet

Edit : Fixed by iYeow

[Mes]

Patience ladies and gentlemen. Give our outstanding jb'ing team a few days to get everything working so you don't have problems

[Orby]

Just fyi for anyone wanting to try the preserve baseband trick on iPhone 4 for going to 4.2.1 this is an update from Semaphore, creator of tiny umbrella:

Twitter

In a nutshell, do not try it yet.



Edit: Could a mod please fix my title, supposed to be "iPhone 4" between on and yet

I think it's more than the iPhone 4.

From my understanding (and I haven't dug through iBoot yet) is that iBoot is checking the baseband's installed firmware and disallowing booting up if the baseband version doesn't match what iOS 4.2.1 states is the allowed BB version.

I also believe that the check occurs inside of the bootrom hard-coded sig-check area of iBoot on the 3GS and 4--therefore adding another layer of tamper-resistance.

This is getting ugly. Really ugly... Custom firmware to preserve baseband may have just been kicked in the nuts with incredible force.

[Simon]

So you are saying this could impact custom firmwares too then. Damn, Apple is starting to play a little hardball.

[Orby]

So you are saying this could impact custom firmwares too then. Damn, Apple is starting to play a little hardball.

I think it gets worse. What do y'all make of this?

Private Paste - Pastie

I'm afraid that doesn't mean wireless iTunes media syncs, but rather, wireless updates... (I need a drink).

[Simon]

Hmmm...interesting. Guess we will have to wait and see where this leads.

[Mes]

Yep .. Ugly . When Apple 1st included sig checks in iBoot, I doubted that was the end it. Their engineers are pretty smart too