tutorial custom firmware iOS 4.2.1 sin subir baseband Hacktivado

iH8sn0w released to create custom firmware that seamlessly jailbreak iOS 4.2.1 for Windows, remember this program does not update baseband and people who have illegal iPhone will be able to unlock it with ultrasn0w. Therefore you can update to 4.2.1 without uploading baseband and on top of that you can have it hacktivated. .