Jak obniżyć wersję Baseband 2.30 (2.2.1) w iPhonie 3G

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Posted April 16, 2009 at 1:52pm by iClarified

Opis procedury zmiany oprogramowania Basebandu modemu w iPhonie 3G z wersji 2.30 do wersji 2.28 przy Bootloaderze 5.8. Zmiana ta pozwoli Ci na ominięcie simlocka w iPhonie 3G przy użyciu YellowSn0w. Podobne rozwiązanie dla wyższych wersji Bootloadera jest przygotowywane...

WAŻNE: Zanim przystąpisz do zmiany wersji Basebandu upewnij się, że Twój iPhone korzysta z wersji Bootloadera 5.8. Opis procedury określenia wersji Bootloadera znajdziesz tutaj:

Windows, Mac. Upewnij się, czy posiadasz wersję Basebandu 2.30 używając tego opisu. Aby skorzystać z tej metody należy zainstalować MobileTerminal.

Krok pierwszy
Uruchom Cydia w iPhonie.

Jak obniżyć wersję Baseband 2.30 (2.2.1) w iPhonie 3G

Krok drugi
Wybierz ikonkę Sections w dole ekranu.

Krok trzeci
Wybierz iClarifed z listy sekcji. Jeśli nie możesz odszukać iClarified należy dodać źródło iClarified korzystając z tych wskazówek.

Krok czwarty
Wybierz DownBB z listy .

Krok piąty
Wybierz Install w prawym górnym rogu ekranu.

Krok szósty
Wybierz Confirm aby rozpocząć instalację.

Krok siódmy
Po zakończonej instalacji wybierz
Return to Cydia.

Krok ósmy
Wciśnij przycisk Home aby wrócić do SpringBoard a następnie uruchom Terminal.

Krok dziewiąty
Wpisz su w oknie Terminala oraz po zapytaniu o hasło alpine.

Krok dzisiąty
Wpisz DownBB w oknie Terminala aby uruchomić skrypt zmiany wersji Basebandu.

Krok jedenasty
Pojawi się prośba o potwierdzenie lub odrzucenie wykonania procedury zmiany wersji Basebandu. Przed wpisaniem w oknie Terminala yes prosimy się upewnić, że w iPhonie znajduje się wersja Basebandu 2.30.

Krok dwunasty
Teraz DownBB wykona skrypt który obniży wersję Basebandu.

Krok trzynasty
Po zakończeniu wykonywania skryptu nastąpi samoczynny restart iPhona.

Krok czternasty
Teraz wersja Basebandu zmieniła się na 2.28.

Krok piętnasty
Można teraz ominąć simlocka korzystając z procedury odblokowania iPhona 3G opisanej tutaj!

PODZIĘKOWANIA
Many thanks to EvilPenguin|, pH, and DHowett for their work on this script! Thanks to Geo-hot for discovering the exploit!

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ravdeep - August 26, 2012 at 10:57am

i have iphone 3g bootloader 6.2 .... by mistake i upgraded it to 4.2.1 baseband 5.15.04 .... now its sim is not getting unlocked..... Is there any way to do it......as the baseband cannot be downgraded using fuzzyband......??????????

Reply · Like

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Damann - October 19, 2009 at 11:02am

I have an Iphone 3G with 3.0 and 5.9 bootloader and 05.11.07 baseband.... When are they gonna come out with a fix for this to be unlocked or an update or something... Ive been waiting a long time for this... Plz Help a brother out.... Im stuck like chuck

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sanenda - October 8, 2009 at 11:05pm

Hello, I have iphone 3g i installed firmware 3.1 by mistake after that i again installed firmware 3.0 after getting errors now i have baseband 05.11.04 something like that, and bootloader 5.90. now I want to unlock my iphone because ultrasn0w is no longer working now.... please help me out.

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that doesn't exactly embrace the avoidance of unnecessary intervention.

Maha - September 20, 2009 at 4:16am

The solution is to upgrade to 3.0 OS and then use Ultasnow to unlock..it works for 5.9 and 6.2 bootloader.

Shahzad Riaz - September 21, 2009 at 5:16pm

Still no luck ..i got OS 3.0 and bootloader 6.4... suggestions? cheers.

Naiyadh - October 1, 2009 at 7:59am

Hey, i have iphone 3g with fw 3.0. my bootloader is 5.09 and bb is 5.11.07. do you think i can do this to downgrade my bb. Please let me know. And thanks for help.

Maha - October 1, 2009 at 8:29am

Yes It is possible I have OS 3.0 and bb 6.02 *(It was 6.somthing I can't recall). Anyway I used Ultrasnow to unlock my phone. Visit this page and do as they say : http://www.blogsdna.com/3778/how-to-unlock-iphone-3g-30-os-firmware-with-ultrasn0w-06.htm

Salman - October 2, 2009 at 1:03pm

Ayman - May 29, 2010 at 10:13pm

ya maha could you tell me more how can you make it work with boot loader 08.09 i tried 3.1-3.12-.3.13 nothing is happening

hyper - July 3, 2009 at 2:32am

thanks for this one, but unlucky for me. Mine has a 5.9 bootloader. is their a new way to downgrade it?

kabin - August 20, 2010 at 7:33am

yeni projeniz için bir tasarımcı ortağa ihtiyacınız varsa, o kişiye kolaylıkla ulaşmanızı sağlamak istiyoruz. Aynı şekilde projeniz i

muhd sidek - June 22, 2009 at 7:36am

I cant unlock my phone wit yellowsnow..........its show NO SERVICE>.........pLS any1 help me .......... IPHONE 3G 2.2 baseband 04.26.08..................PLSSSSSS

DRAGAN - June 20, 2009 at 10:06am

iphone 3g 3.0 modem 04.26.08 unlock the carrier

mmet - June 18, 2009 at 2:13pm

hello my friend i have iphone 3g 16 gb 3 but i cant use in turkey my phones version 5.9 i cant use with simcard just use turbo sim plz ı need ur help ...

waigal - June 17, 2009 at 12:20am

i have a 3g iphone with bootloader version 05.09 and baseband version 02.30.03 and OS version 2.2.1 can't downgrade the baseband anyone can help????

mike - June 19, 2009 at 11:34pm

iphone newbie is there a way to downgrade 5.9 bootloader yet please help

the_same - September 19, 2009 at 9:30pm

same happens to my iphone dude, i did all that shitty bt nothing happnd yet ,,,,

Maha - September 20, 2009 at 4:21am

Don't worry there is a solution, it has been out for almost 2 months. check http://www.blogsdna.com/3778/how-to-unlock-iphone-3g-30-os-firmware-with-ultrasn0w-06.htm

dr-sotz - October 2, 2009 at 12:43pm

only jailbroken not unlock if ur bootloader is 5.9 and 6.x

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chuck - June 14, 2009 at 11:48pm

iphone newbie is there a way to downgrade 5.9 bootloader yet please help!!!

Jaspreet Singh Jolly - April 23, 2010 at 10:35pm

u cannot downgrade 05.09 bootloader as it is hardware prob........ if u want to replace 05.09 n u live in new delhi(india) i can help u out for that.... it will cost u a bit high ....... ne 1 interested mail me at jaspreet.jolly.6267@gmail.com

Bryan - November 17, 2010 at 1:19am

Did anyone figure out how to downgrade Bootloader 05.09????

vysal - June 12, 2009 at 4:42am

i install actidently with os 3.0 bootloader 5.9 / modem firmware 04.26.08 ... i can jealbreak but cant unlock the GSM carrier. so any idea.

Nameless - December 23, 2009 at 9:11am

isntall blacksnow

smit dave N. - June 3, 2009 at 12:09pm

hey i have a boot loader version 5.9...plz help how to downgrade to 5.80...plzzz help plzzzz!!!!!!!!!!

akter_hosain - June 3, 2009 at 2:31am

I have a Iphone 3g, Firmware version 2.25G77, Modem version 2.30.03 Bootloader version 6.04

reex33 - May 28, 2009 at 10:14am

C'mon!!!! 5.9/6.0 to 5.8 I hope we get this problem solved soon. shhhiiiiitttt......

taha Hadrez - May 27, 2009 at 7:46am

sdfg

tony - May 27, 2009 at 1:35am

help me unlock 2.2.1 version, 2.30.03 baseband and 6.04 bootloader iphone.

serenity - May 26, 2009 at 1:23pm

Thank you for the help. However, yet, the problem could not be solved. Again, we request your help. At present, it is " modem version 02.30.03 ", "OS 5G77". Tell the way of changing into modem version 02.28.0. It tried a down grade in the envoy modem version in the Fuzzyband software. However, because the bootloader version was to do 5.9 being, it isn't possible to do a change. Tell the way of changing a bootloader version into 5.8. Or, tell the way of modem version's being able to be changed in the other way. I request your help.

MrBlue - May 25, 2009 at 10:46pm

Hi, Dev team, we know that you guys are working on upgrading Yellowsn0w to make it possible to unlock bootloader 5.09 - 6.0. Hopefully can be done... don't let Apple laugh at us... poor people who really don't want to be "jailed" and the people who decided to follow your path.

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