@hanae0711
Actually you're in deep s**t. When you upgrade the phone to 2.2.1, the baseband already change. Yellowsn0w only work with 2.2 baseband (02.28.00). You can check the baseband in Settings --> General --> About --> Modem Firmware. If it state 02.30.03 then yellowSnow won't work.

If you want to upgrade from 2.2 to 2.2.1, the correct way was using Pwnagetool and create a custom IPSW (firmware file). In Pwnagetool, there's an option to disable baseband update, means you can upgrade the phone firmware to 2.2.1 but keeping the 2.2 baseband.

And I forgot one thing, downgrading the firmware from 2.2.1 to 2.2 WILL NOT downgrade the baseband. It's a one way street as in baseband version can only go up and not down. I'm afraid you're stuck with an iPod Touch for the moment.

@chrisl_57
Stop giving false info/hope to the TS.

I've read the link that you gave over and over again and not a single line said you can downgrade the baseband back to 02.28.00. All they were discussing was downgrading the FIRMWARE and not the BASEBAND. Get the fact straight first before giving hope to people. If it was possible, won't the dev team already given the solution to it?

FIRMWARE and BASEBAND are different. From my understanding, most of them in that site want to JAILBREAK their phone and not to UNLOCK. Thats why they want to downgrade the firmware from 2.2.1 to 2.2 since dev team has not release Pwnagetool or Quickpwn for 2.2.1 at that time.


The bolded sentence shows the reader downgrade the firmware to jailbreak it and not to unlock it. I assume most of them are using AT&T hence there no need for an unlock, they were just concerned about jailbreaking. But our TS is trying to UNLOCK his phone which is not possible with 2.2.1 baseband (02.30.03) at this moment.

WOHOOO Thats great. I've never jailbreak or unlock any iphones before, heck i don't even have or hold an iPhone before. Nice touch on CRACKING paid applications. We need more pirates in this world. Ahoy there matey.

I think you or those people in the article should join the Dev team since the dev team themselves can't downgrade the baseband (or so they said).

I'm no iPhone expert but I do read a lot about it and I know what I'm talking about.

READ AND READ AGAIN THE QUOTE ABOVE DIRECTLY FROM DEV TEAM BLOG!!!

Clearly you don't understand the situation. TS want to unlock his phone since its an US set (locked to AT&T) and yellowsn0w does not work with 02.30.03. From the article (that has been your source), it's said that they manage to downgrade the FIRMWARE ... for goodness sake ... FIRMWARE and not a single hint of BASEBAND uttered in there. FIRMWARE can be downgraded but not BASEBAND. Get that thru you thick skull.

Please show me in any of the article or youtube or whatever that they manage to downgrade the BASEBAND ... again I said BASEBAND. If you keep insisting that it can be done ... I would gladly pay you on behalf of TS to unlock his 02.30.03 BASEBAND for RM100 since you said you do it for free.


P/S - I'm also a developer and cracking Apple apps are easy when crackulous is around. Big deal.

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Added on February 6, 2009, 1:46 amTo add some more salt to the wound, I can even restore back the phone down to 1.0.2 but the baseband would still be 02.30.03 (but there's no firmware 1.0.2 for iPhone 3G ). The A17 testpoint is no use to clear the baseband since its using a different architecture from the 1st gen.

This post has been edited by frozzbyte: Feb 6 2009, 01:49 AM