HI, all expert here. I face a trouble regarding the firmware update for my iPad.

First of all, may i know that iOS 4.2 and iOS 4.2.1, it's the same?
This is because i try to jailbreak with greenpois0n, but the Loader cannot be turn on.

Therefore i try to update my firmware from iOS 4.2 to iOS 4.2.1
I can't update directly from my iTunes.

So, i read from the internet get a solution.
i download the firmware from internet "iPad1,1_4.2.1_8C148_Restore.ipsw"
On iTunes, press "Shift" and browse the ipsw file. Retore it.

After few minutes, an error msg prompt



I study the error from the internet again, i download the "tinyumbrella" and start the TTS server

Unfortunately, i get another error msg error 1600
I study the error from the internet again, i download the iREB.
It's work.



I think that all was solve.....But.........
At the end.....



The iTunes still cannot detect my iPAD and the iPAD seem like empty no OS at all.
I has try few times and study from the internet.

No solution.....i need HELP................

Keyword : DFU MODE ?

Ya, it's always in DFU mode. makaveli
What you means?

You need to be in PWN DFU mode, not just simple DFU mode. Download iREB RC4 and it will inject the necessary Limera1n exploit to put your iDevice in PWN DFU mode. This should solve your 1600 error.

So run iREB, it will put the iPad in the PWN DFU mode, run TinyUmbrella and start the TSS server and Shift+Restore in iTunes and you should be good to go.

azraeil, i can restored it. But the problem is, after restored....You can see my second error photo.

It's show i has restored my iPad successfully. But, the itunes still show the iPad need to restore.

You know what i means?

Hmm, I have not encountered this problem. Try connecting the iPad to TU again and see if you kick it out of recovery.

The TU show no devices connected and the devices just a question mark with some code. I need HELP...really have no idea...

try using tinyumbrella and kick it out of recovery mode. i think the os is loaded oredy, just need to use tinyumbrella kick it out of it. ur ipad show connect to itunes logo right?

I'm sure the iPad on PWNED DFU state



I'm sure the iPad was restored in by iTunes



and in iPad



and iTunes show restored success will restart in short period



But the iTunes still show no devices and need to restore no matter how many time
i try and try in different computer. re-install iTunes, try differemt version iOS.

The result still the same



TinyUmbrella show the iPAD with series of no and question mark



I try exit recovery in TinyUmbrella



But the result still the same, in DFU mode, no iOS cannot do anything.
Want died