{"id":16791,"date":"2010-11-22T16:31:16","date_gmt":"2010-11-22T11:01:16","guid":{"rendered":"https:\/\/www.amitbhawani.com\/blog\/?p=16791"},"modified":"2010-11-22T19:32:42","modified_gmt":"2010-11-22T14:02:42","slug":"jailbreak-apple-iphone-4-ios-421","status":"publish","type":"post","link":"https:\/\/www.amitbhawani.com\/blog\/jailbreak-apple-iphone-4-ios-421\/","title":{"rendered":"How to Jailbreak Apple iPhone 4 iOS 4.2.1"},"content":{"rendered":"<p><a href=\"https:\/\/i0.wp.com\/www.amitbhawani.com\/blog\/wp-content\/uploads\/2010\/11\/iPhone-4-jailbreak-logo.png\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" class=\"alignright size-medium wp-image-16808\" src=\"https:\/\/i0.wp.com\/www.amitbhawani.com\/blog\/wp-content\/uploads\/2010\/11\/iPhone-4-jailbreak-logo-300x96.png?resize=169%2C54\" alt=\"iPhone 4 jailbreak logo\" width=\"169\" height=\"54\" srcset=\"https:\/\/i0.wp.com\/www.amitbhawani.com\/blog\/wp-content\/uploads\/2010\/11\/iPhone-4-jailbreak-logo.png?resize=300%2C96&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.amitbhawani.com\/blog\/wp-content\/uploads\/2010\/11\/iPhone-4-jailbreak-logo.png?resize=150%2C48&amp;ssl=1 150w, https:\/\/i0.wp.com\/www.amitbhawani.com\/blog\/wp-content\/uploads\/2010\/11\/iPhone-4-jailbreak-logo.png?w=313&amp;ssl=1 313w\" sizes=\"auto, (max-width: 169px) 100vw, 169px\" \/><\/a>Last time we saw on <a href=\"https:\/\/www.amitbhawani.com\/blog\/jailbreak-apple-ipad-ios-421-pwnagetool\/\" target=\"_blank\">how to jailbreak the Apple iPad<\/a>, now let&#8217;s see how you can jailbreak the Apple iPhone iOS 4.2.1 by using Pwnage Tool. Before proceeding to jail break your iPad, you will have to make sure that you have downloaded and installed all the softwares like <a href=\"http:\/\/www.apple.com\/itunes\/download\/\">Apple iTunes<\/a>, <a href=\"http:\/\/www.multiupload.com\/KVI1NUBEZV\">iOS 4.2.1 GM<\/a> for iPhone 4 and also the latest\u00a0 <a href=\"http:\/\/blog.iphone-dev.org\/post\/1359246784\/20102010-event\">Pwnage Tool 4.1.2<\/a>.<\/p>\n<p><strong>Procedure to jailbreak Apple iPhone 4:<\/strong><\/p>\n<ul>\n<li> Firstly you need to Sync iPhone with Apple iTunes and create a back up of all your data, including music, contacts, pictures, calendar, notes, messages, apps, etc.  So that all your data will be backed up, just in case if anything happens your data will be safe.<\/li>\n<\/ul>\n<p style=\"text-align: left\"><a href=\"https:\/\/i0.wp.com\/www.amitbhawani.com\/blog\/wp-content\/uploads\/2010\/11\/iPhone-iTunes-Sync.png\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-16800 aligncenter\" src=\"https:\/\/i0.wp.com\/www.amitbhawani.com\/blog\/wp-content\/uploads\/2010\/11\/iPhone-iTunes-Sync-300x221.png?resize=300%2C221\" alt=\"iPhone iTunes Sync\" width=\"300\" height=\"221\" srcset=\"https:\/\/i0.wp.com\/www.amitbhawani.com\/blog\/wp-content\/uploads\/2010\/11\/iPhone-iTunes-Sync.png?resize=300%2C221&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.amitbhawani.com\/blog\/wp-content\/uploads\/2010\/11\/iPhone-iTunes-Sync.png?resize=1024%2C756&amp;ssl=1 1024w, https:\/\/i0.wp.com\/www.amitbhawani.com\/blog\/wp-content\/uploads\/2010\/11\/iPhone-iTunes-Sync.png?resize=150%2C110&amp;ssl=1 150w, https:\/\/i0.wp.com\/www.amitbhawani.com\/blog\/wp-content\/uploads\/2010\/11\/iPhone-iTunes-Sync.png?w=1046&amp;ssl=1 1046w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n<ul>\n<li>Now, move all installed files mentioned above to the Desktop as a shortcut and right click on the Pwnage Tool 4.1.2 icon and select on option <strong>Show Package Contents<\/strong>.<\/li>\n<\/ul>\n<p style=\"text-align: center\"><a href=\"https:\/\/i0.wp.com\/www.amitbhawani.com\/blog\/wp-content\/uploads\/2010\/11\/show-package-tools.png\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-16661 aligncenter\" src=\"https:\/\/i0.wp.com\/www.amitbhawani.com\/blog\/wp-content\/uploads\/2010\/11\/show-package-tools-300x106.png?resize=300%2C106\" alt=\"show package tools\" width=\"300\" height=\"106\" srcset=\"https:\/\/i0.wp.com\/www.amitbhawani.com\/blog\/wp-content\/uploads\/2010\/11\/show-package-tools.png?resize=300%2C106&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.amitbhawani.com\/blog\/wp-content\/uploads\/2010\/11\/show-package-tools.png?resize=150%2C53&amp;ssl=1 150w, https:\/\/i0.wp.com\/www.amitbhawani.com\/blog\/wp-content\/uploads\/2010\/11\/show-package-tools.png?w=574&amp;ssl=1 574w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n<ul>\n<li>Now, navigate to\u00a0<strong>Contents\/Resources\/FirmwareBundles\/<\/strong> and paste <strong>iPhone3,1_4.2.1_8C148.bundle<\/strong> file in this location and close this folder.<\/li>\n<\/ul>\n<ul>\n<li>Now all you will need to do is to just launch <strong>Pwnage Tool<\/strong> and it will detect i OS 4.2.1 GM for iPad automatically.<\/li>\n<\/ul>\n<p><a href=\"https:\/\/i0.wp.com\/www.amitbhawani.com\/blog\/wp-content\/uploads\/2010\/11\/Pwange-tool.png\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-medium wp-image-16662\" src=\"https:\/\/i0.wp.com\/www.amitbhawani.com\/blog\/wp-content\/uploads\/2010\/11\/Pwange-tool-300x262.png?resize=300%2C262\" alt=\"Pwange tool\" width=\"300\" height=\"262\" srcset=\"https:\/\/i0.wp.com\/www.amitbhawani.com\/blog\/wp-content\/uploads\/2010\/11\/Pwange-tool.png?resize=300%2C262&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.amitbhawani.com\/blog\/wp-content\/uploads\/2010\/11\/Pwange-tool.png?resize=150%2C131&amp;ssl=1 150w, https:\/\/i0.wp.com\/www.amitbhawani.com\/blog\/wp-content\/uploads\/2010\/11\/Pwange-tool.png?w=494&amp;ssl=1 494w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n<ul>\n<li>If a message box reads out <strong>Do you have an iPhone contract that would activate normally through <\/strong><strong>iTunes?<\/strong> Then simply click on <strong>No<\/strong>. If you select <strong>Yes, <\/strong>then it will update your base band to the latest version. Only select <strong>Yes, <\/strong>if you are on official at&amp;t carrier.<\/li>\n<\/ul>\n<ul>\n<li>Now, Pwnage Tool will now create the custom .ipsw file in your Apple iPhone 4 which will be jailbroken. You will be prompted to save custom .ipsw firmware file, you need to save it on the desktop. It will take around 10-15 minutes for building the custom\u00a0firmware.<\/li>\n<\/ul>\n<p>Now, you will need to restore your Apple iPhone 4 to the custom firmware 4.2.1 GM.<\/p>\n<ul>\n<li>Now connect you iPhone to the system and open the latest i Tunes and  select the iPhone from the right bar of the window side bar and just  click on restore while holding the ALT key which is located on the MAC\/  Shift key on the Window.<\/li>\n<\/ul>\n<ul>\n<li>Just select the the custom iOS 4.2.1 which has been created by Pwnage  Tools and then iTunes will do the rest of the process automatically by  itself<\/li>\n<\/ul>\n<ul>\n<li>Now you need to select the <strong>Custom IPSW<\/strong> that was created earlier and click the <strong>Choose<\/strong> button.\u00a0Wait for a while till iTunes installs the new firmware 4.2.1 GM on your iPhone 4. As soon as installation is done, iPhone 4 will restart automatically.<\/li>\n<\/ul>\n<p>You have now successfully jailbroken the iPhone which is running iOS 4.2.1 GM on\u00a01.59.00 base band! Now you can use <a href=\"https:\/\/www.amitbhawani.com\/blog\/unlock-iphone-4-ios-4-0-4-0-1-with-ultrasn0w-final\/\" target=\"_blank\">ultrasn0w to carrier unlock your Apple iPhone 4<\/a>. With the help of Pwnage tool you can <a href=\"https:\/\/www.amitbhawani.com\/blog\/jailbreak-ios4-iphone-3g-3gs-ipod-touch-2g-with-pwnagetool\/\" target=\"_blank\">unlock iPhone 3G, 3GS or iPod 2G<\/a> too.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Last time we saw on how to jailbreak the Apple iPad, now let&#8217;s see how you can jailbreak the Apple iPhone iOS 4.2.1 by using Pwnage Tool. Before proceeding to jail break your iPad, you will have to make sure that you have downloaded and installed all the softwares like Apple iTunes, iOS 4.2.1 GM [&hellip;]<\/p>\n","protected":false},"author":44,"featured_media":16808,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[346],"tags":[],"class_list":{"0":"post-16791","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-apple","8":"entry"},"aioseo_notices":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/www.amitbhawani.com\/blog\/wp-content\/uploads\/2010\/11\/iPhone-4-jailbreak-logo.png?fit=313%2C101&ssl=1","jetpack_sharing_enabled":true,"jetpack-related-posts":[{"id":16824,"url":"https:\/\/www.amitbhawani.com\/blog\/jailbreak-apple-ipad-ios-421-tethered-option\/","url_meta":{"origin":16791,"position":0},"title":"How to Jailbreak Apple iPad iOS 4.2.1 &#8211; Tethered Option","author":"Neal","date":"November 23, 2010","format":false,"excerpt":"Apple has released the latest iOS 4.2.1and if you are still waiting for the update to reach your device through iTunes or you don\u2019t know how to update then this complete tutorial on how to update the firmware software of Apple will help you in upgrading. Please note that if\u2026","rel":"","context":"In &quot;Apple&quot;","block_context":{"text":"Apple","link":"https:\/\/www.amitbhawani.com\/blog\/category\/apple\/"},"img":{"alt_text":"Jailbreak ipad tethered logo","src":"https:\/\/i0.wp.com\/www.amitbhawani.com\/blog\/wp-content\/uploads\/2010\/11\/Jailbreak-ipad-tethered-logo-300x125.png?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":16660,"url":"https:\/\/www.amitbhawani.com\/blog\/jailbreak-apple-ipad-ios-421-pwnagetool\/","url_meta":{"origin":16791,"position":1},"title":"How to Jailbreak Apple iPad iOS 4.2.1 with PwnageTool","author":"Neal","date":"November 21, 2010","format":false,"excerpt":"Let us see that how you can easily \u00a0jail break the iPad 4.2.1 i OS. You will be requiring a MAC to jail break the iPad 4.2.1 and need to install Cydia. We will be jail breaking the Apple iPad with the help of a tool called Pwnage Tool. Before\u2026","rel":"","context":"In &quot;Apple&quot;","block_context":{"text":"Apple","link":"https:\/\/www.amitbhawani.com\/blog\/category\/apple\/"},"img":{"alt_text":"JAILBREAK IPAD","src":"https:\/\/i0.wp.com\/www.amitbhawani.com\/blog\/wp-content\/uploads\/2010\/11\/JAILBREAK-IPAD-225x300.png?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":16916,"url":"https:\/\/www.amitbhawani.com\/blog\/jailbreak-apple-iphone-4-3gs-3g-ios-421\/","url_meta":{"origin":16791,"position":2},"title":"How to Jailbreak Apple iPhone 4, 3GS, 3G on iOS 4.2.1","author":"Neal","date":"November 24, 2010","format":false,"excerpt":"Apple unveiled iOS 4.2.1 GM for iPhone 4, 3GS, 3G, iPad and iPod touches just a day back. The software build which is currently available for the developers can be jail broken using the version 0.9.6b2 of Redsn0w. There have been many feedbacks about Cydia not being working as Apple\u2026","rel":"","context":"In &quot;Apple&quot;","block_context":{"text":"Apple","link":"https:\/\/www.amitbhawani.com\/blog\/category\/apple\/"},"img":{"alt_text":"iPhone 4 jailbreak logo","src":"https:\/\/i0.wp.com\/www.amitbhawani.com\/blog\/wp-content\/uploads\/2010\/11\/iPhone-4-jailbreak-logo-300x96.png?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":16908,"url":"https:\/\/www.amitbhawani.com\/blog\/install-jailbroken-apps-apple-ios-devices-cydia\/","url_meta":{"origin":16791,"position":3},"title":"How to Install Jailbroken Apps on Apple iOS devices without Cydia","author":"Neal","date":"November 25, 2010","format":false,"excerpt":"Finally the update to redsn0w version 0.9.6b4 is out which is now available for download and comes with an ability to install the jail broken iOS 4.2.1 apps without using Cydia. Many of them recently commented that Cydia was not working with quite a few devices as it was having\u2026","rel":"","context":"In &quot;Apple&quot;","block_context":{"text":"Apple","link":"https:\/\/www.amitbhawani.com\/blog\/category\/apple\/"},"img":{"alt_text":"Apple Logo","src":"https:\/\/i0.wp.com\/www.amitbhawani.com\/blog\/wp-content\/uploads\/2010\/11\/Apple-Logo.png?fit=363%2C441&ssl=1&resize=350%2C200","width":350,"height":200},"classes":[]},{"id":12930,"url":"https:\/\/www.amitbhawani.com\/blog\/jailbreak-apple-iphone-3g-3gs-4\/","url_meta":{"origin":16791,"position":4},"title":"Jailbreak Apple iPhone 3G 3GS 4 on iOS4 or iOS 4.0.1 &#038; Install Cydia","author":"Tony Stark","date":"August 2, 2010","format":false,"excerpt":"It was seriously a very long wait for the right tool to come out on the Internet and finally here is a very useful and simple tool using which you can Jailbreak your Apple iPhone 4, 3G & 3GS which are updated to the latest iOS4 or iOS 4.0.1 .\u2026","rel":"","context":"In &quot;Apple&quot;","block_context":{"text":"Apple","link":"https:\/\/www.amitbhawani.com\/blog\/category\/apple\/"},"img":{"alt_text":"Jailbreak iPhone Safari","src":"https:\/\/i0.wp.com\/www.amitbhawani.com\/blog\/wp-content\/uploads\/2010\/08\/Jailbreak-iPhone-Safari.png?fit=480%2C320&ssl=1&resize=350%2C200","width":350,"height":200},"classes":[]},{"id":4826,"url":"https:\/\/www.amitbhawani.com\/blog\/jailbreak-iphone-3-0-firmware-pwnagetool-3-0\/","url_meta":{"origin":16791,"position":5},"title":"Jailbreak iPhone 3.0 firmware with Pwnagetool 3.0","author":"Chetan Bhawani","date":"June 19, 2009","format":false,"excerpt":"Apple released the iPhone 3.0 firmware and also the iPhone 3G S which comes with the latest firmware, but the old iPhone 3G phones once upgraded with the new firmware would lose the network if it was an unlocked phone earlier. And the dev team has released the first tool\u2026","rel":"","context":"In &quot;Apple&quot;","block_context":{"text":"Apple","link":"https:\/\/www.amitbhawani.com\/blog\/category\/apple\/"},"img":{"alt_text":"Pwnage Tool","src":"https:\/\/i0.wp.com\/www.amitbhawani.com\/blog\/wp-content\/uploads\/2009\/06\/Pwnage-Tool-150x150.jpg?resize=350%2C200","width":350,"height":200},"classes":[]}],"_links":{"self":[{"href":"https:\/\/www.amitbhawani.com\/blog\/wp-json\/wp\/v2\/posts\/16791","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.amitbhawani.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.amitbhawani.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.amitbhawani.com\/blog\/wp-json\/wp\/v2\/users\/44"}],"replies":[{"embeddable":true,"href":"https:\/\/www.amitbhawani.com\/blog\/wp-json\/wp\/v2\/comments?post=16791"}],"version-history":[{"count":0,"href":"https:\/\/www.amitbhawani.com\/blog\/wp-json\/wp\/v2\/posts\/16791\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.amitbhawani.com\/blog\/wp-json\/wp\/v2\/media\/16808"}],"wp:attachment":[{"href":"https:\/\/www.amitbhawani.com\/blog\/wp-json\/wp\/v2\/media?parent=16791"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.amitbhawani.com\/blog\/wp-json\/wp\/v2\/categories?post=16791"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.amitbhawani.com\/blog\/wp-json\/wp\/v2\/tags?post=16791"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}