How to downgrade iphone 2.30.03 to baseband 02.28.00

Iphone,now the worlds largest selling phones have

frequent updates of their firmware.but the some of the firmwares or basebands

really create a problem for many of the best applications to work on the

iphone.one such baseband is 2.30.03.it is not compatible with the sweet

yellowsnow.as all know yellowsnow iphone app works only on 2.28

baseband.there is an bs patch file to downgrade iphone version from 2.30.03 to

baseband 02.28.00.this patch can be applied to ICE2_02.28.00.fls to allow

downgrades via bbupdaterextreme.we can also use pHaseBanDowngrader to

downgrade iphones to any lower version.

now lets know how to use phasebandowngrader:
you iphone must have bootloader 5.8(iphones mfd before

sep 2008 are 5.8)

1.first download phasebandowngrader 1.0. click here
2.SSH into your apple iphone.put the downloaded file into folder/applications
3.in mobileterminal.app type login and now you enter “root” as user,and note that

the default password is “alpine”
4.in the fourth step,you have to type

“cd/applications/phasebandowngrader&&./phasebandowngrader”.and now you

will see certain instructions on the screen follow it.

Now yellowsnow app will be supported by your iphone.there are also other

downgrade methods like pedro,evilpenguin and bigboss that has automated 3g

baseband downgrade.