After you completed the downgrade, you don't have to restore firmware 2.2. You're downgrading the BL only. So, just proceed to use yellowsn0w to unlock. Just follow the guide provided on first post and you'll be fine but really pay attention to what you're doing.

I think you're the first here to attempt the downgrade and all the best mate. Do feedback to us when you're done.

Cheers

lol ok

But u said earlier " You need to revert back to 2.2 and use yellowsn0w to unlock. "...

but the problem is...I think im using the official/original 2.2.1 fw from Itunes to use with the Rebel sim, Can i still unlock it with yellowsn0w?

So U think I should go for custom 2.2.1 then do the baseband downgrade then unlock it?
or
Using original 2.2.1 downgrade and restore back to 2.2? Can I just shift+restore using the custom 2.2 file from Page 1?
or
try original 2.2.1 downgrade and unlock with yellowsn0w?


Can you guide me alil via MSN?

If yes..please PM me your MSN THANK YOU

Sorry, my mistake for saying you need to use firmware 2.2. After reading the guide, it not necessary to revert to 2.2. Remain at Fw 2.2.1.

Now, all you need to do is to follow the guide on first post to find what BL you're on. What you're doing now is to downgrade the baseband only, not the firmware.

1) Find your BL version
2) Make sure your iPhone is 5.08 BL and install MobileTerminal via Cydia to your iPhone.
3) Follow the iClarified guide to downgrade baseband.
4) Use yellowsn0w to unlock. Done

hmm thanks

But I think mine is original firmware downloaded from iTunes? Can I still use yellowsn0w to unlock?

or I need to restore back to 2.2.1 custom ipsw from the Page 1 then do the downgrade baseband process?

AFAIK, all original firmware was from itunes, it's just a matter if you downoading it directly from itunes or download it from other link..

as for you iphone, you dont need to downgrade your firmware, just use the baseband downloader will do, just follow guide bro david told you and everything will be perfect then,

in order for yellowsn0w to work, it is a must to have baseband 2.28.00 and yellowsn0w will work, if you on 2.30.03 and use yellowsn0w it wont work eventhough you have install the yellowsn0w app into your iphone..hope your baseband is on 5.8 if not then you cant downgrade your baseband.


p/s: dont need to restore because you only downgrade the baseband only not the firmware. good luck and share the result with us ok..

cheers.

Taka.

OK i will give it a try now


*** sigh...mine is 05.09 LOL zzz wait for next update then

This post has been edited by tornad0: Apr 21 2009, 01:51 PM

lol, hehe, so it means that you cant downgrade your baseband "yet"...lets just hoping that geoHotz( the person who create the exploit) or his team do another miracles and who know maybe those on bootloader 6.02 also can downgrade their baseband.

cheers
Taka.

yeah ..too bad:P lol hope they can release fast fast:P lazy to use rebel sim.. ZZZ

Although I already saw a topic on this but I'm wondering that can iPhone 3g from Aus os 2.2.1 be unlock?
Thanks

unlock it from optus or telstra ler bro....
but need to pay around aud80 to aud120 for the unlock

Yup i second that. for optus aud120 needed to unlock the iphone and after pay the fee and called them to unlock it. need to wait around 10 days before it can be use with other sim card.

but the phone is already in msia now, can unlock by software like phone from other countries?

just upgrade to new firmware 2.2.1 after long time lost my internet connection... just my concern, if i iphone already unlocked version did i use correct firmware to upgrade (iPhone1,2_2.2.1_5H11_Restore.ipsw) blur after long time not browsing this thread... sorry all sifu if ask this noob question...

how about my baseband is 04.22.01??i up to 3.0beta then my baseband up to 04.22.01, anyone can unlock the sim?

upgrading to a beta firmware with that baseband is never recommended. Dev Team themselves stated that they will not have support for these (unlocking etc.) till the actual 3.0 is out. so for now you gotta just live with it.

That being the case, you can only hardware unlock your unit by using turbo/rebel/gevey SIM.

I read some review on hardware like turbo sim, seems like their not so good. Can I bring to sg for singtel to unlock or lowyat tat someone might me able to do?

Yep, it is not so good. Once you are on FW2.2.1, at this point in time, that's the only way to go unless you do what genocide suggested. At least you have that option. For sets from the States, there is no alternative at all. It's your call.

You can try using Gevey Sim unlockers as they are available for Fw 2.2.1. Seems to be better than Turbo sim.

For assistance, you can try asking Hanxz to help you.

Do look for him on this thread: http://forum.lowyat.net/index.php?showtopic=826183&hl

I bought a maxis iphone and decided to jailbreak it with quickpwn 2.25 and iPhone1,2_2.2.1_5H11_Restore was working well till after jailbreak i lost my maxis signal i on/off and did airport mode can;t seem to get the maxis signal back can anyone help?!