{"id":16675,"date":"2010-11-22T00:56:26","date_gmt":"2010-11-21T19:26:26","guid":{"rendered":"https:\/\/www.amitbhawani.com\/blog\/?p=16675"},"modified":"2010-11-22T00:56:26","modified_gmt":"2010-11-21T19:26:26","slug":"downgrade-apple-ios-firmware","status":"publish","type":"post","link":"https:\/\/www.amitbhawani.com\/blog\/downgrade-apple-ios-firmware\/","title":{"rendered":"Downgrade Apple iOS 4.2.1 to 4.0.1\/4.0.2\/4.1 firmware"},"content":{"rendered":"<p><a href=\"https:\/\/i0.wp.com\/www.amitbhawani.com\/blog\/wp-content\/uploads\/2010\/11\/iOS-downgrade.png\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" class=\"alignright size-medium wp-image-16686\" src=\"https:\/\/i0.wp.com\/www.amitbhawani.com\/blog\/wp-content\/uploads\/2010\/11\/iOS-downgrade-300x245.png?resize=156%2C127\" alt=\"OS downgrade\" width=\"156\" height=\"127\" srcset=\"https:\/\/i0.wp.com\/www.amitbhawani.com\/blog\/wp-content\/uploads\/2010\/11\/iOS-downgrade.png?resize=300%2C245&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.amitbhawani.com\/blog\/wp-content\/uploads\/2010\/11\/iOS-downgrade.png?resize=150%2C122&amp;ssl=1 150w, https:\/\/i0.wp.com\/www.amitbhawani.com\/blog\/wp-content\/uploads\/2010\/11\/iOS-downgrade.png?w=437&amp;ssl=1 437w\" sizes=\"auto, (max-width: 156px) 100vw, 156px\" \/><\/a>Recently Apple has released the latest i OS 4.2, but the biggest disadvantage of the latest firmware is it is still not yet jail breaked. Not only this but also a new boot ROM is found in all new i OS devices which doesn\u2019t allow the ultra-snow to unlock the device either which makes this i OS un jail breakable and can\u2019t be unlocked either. But since many of them might have upgraded out of curiosity and might have found all these problems. Surely, you can\u2019t afford to buy a new one just because of reason but yes you can\u2019t live just like that too, so we will guide you in this process where in you can down grade back to 4.0.1 or 4.0.2 or to even 4.1 for your i Phone 3G, 3GS and also i Phone 4 and Apple iPad too.\u00a0 You can also <a href=\"https:\/\/www.amitbhawani.com\/blog\/downgrade-apple-iphone\/\" target=\"_blank\">downgrade Apple iPhone 3 GS to 3.1.3 from iOS 4<\/a> or even you can <a href=\"https:\/\/www.amitbhawani.com\/blog\/downgrade-firmware-iphone\/\" target=\"_blank\">downgrade your i Phone firmware from 2.2.1 to 2.2<\/a>. Before proceeding to the procedure to downgrade, you will need to download the appropriate firm wares which are listed below:<\/p>\n<p><strong>Downloads:<\/strong><\/p>\n<ul>\n<li>iOS 4.0.1: <a title=\"iOS 4.0.1 for iPhone 3G\" href=\"http:\/\/appldnld.apple.com\/iPhone4\/061-8616.20100715.phnt4\/iPhone1,2_4.0.1_8A306_Restore.ipsw\" target=\"_blank\">iPhone 3G<\/a>, <a title=\"iOS 4.0.1 for iPhone 3GS\" href=\"http:\/\/appldnld.apple.com\/iPhone4\/061-8618.20100715.Zapn4\/iPhone2,1_4.0.1_8A306_Restore.ipsw\" target=\"_blank\">iPhone 3GS<\/a>, <a title=\"iOS 4.0.1 for iPhone 4\" href=\"http:\/\/appldnld.apple.com\/iPhone4\/061-8619.20100715.4Pnsx\/iPhone3,1_4.0.1_8A306_Restore.ipsw\" target=\"_blank\">iPhone 4<\/a><\/li>\n<\/ul>\n<ul>\n<li>iOS 4.0.2: <a title=\"iOS 4.0.2 for iPhone 3G\" href=\"http:\/\/appldnld.apple.com\/iPhone4\/061-8802.20100811.XcfpR\/iPhone1,2_4.0.2_8A400_Restore.ipsw\" target=\"_blank\">iPhone 3G<\/a>, <a title=\"iOS 4.0.2 for iPhone 3GS\" href=\"http:\/\/appldnld.apple.com\/iPhone4\/061-8805.20100811.Dcr4e\/iPhone2,1_4.0.2_8A400_Restore.ipsw\" target=\"_blank\">iPhone 3GS<\/a>, <a title=\"iOS 4.0.2 for iPhone 4\" href=\"http:\/\/appldnld.apple.com\/iPhone4\/061-8807.20100811.3Edre\/iPhone3,1_4.0.2_8A400_Restore.ipsw\" target=\"_blank\">iPhone 4<\/a><\/li>\n<\/ul>\n<ul>\n<li>iOS 4.1: <a title=\"iOS 4.1 for iPhone 3G\" href=\"http:\/\/appldnld.apple.com\/iPhone4\/061-7932.20100908.3fgt5\/iPhone1,2_4.1_8B117_Restore.ipsw\" target=\"_blank\">iPhone 3G<\/a>, <a title=\"iOS 4.1 for iPhone 3GS\" href=\"http:\/\/appldnld.apple.com\/iPhone4\/061-7938.20100908.F3rCk\/iPhone2,1_4.1_8B117_Restore.ipsw\" target=\"_blank\">iPhone 3GS<\/a>, <a title=\"iOS 4.1 for iPhone 4\" href=\"http:\/\/appldnld.apple.com\/iPhone4\/061-7939.20100908.Lcyg3\/iPhone3,1_4.1_8B117_Restore.ipsw\" target=\"_blank\">iPhone 4<\/a><\/li>\n<\/ul>\n<p><strong>Procedure to downgrade:<\/strong><\/p>\n<ul>\n<li>Firstly, you need to download the required firmware for the downgrade from the available download links given above.<\/li>\n<li>Then you need to put your device in DFU mode and not in Recovery mode. You can <a href=\"https:\/\/www.amitbhawani.com\/blog\/put-iphone-in-recovery-dfu-mode\/\" target=\"_blank\">easily put your i Phone into DFU Mode<\/a>.<\/li>\n<li>Please note, the users of iPhone 3GS, iPhone 4 and i Pod touch 2G (MC model) users who have their SHSH blobs (ECID SHSH) saved on Cydia for the firmware downgrading, If you don\u2019t have your SHSH files saved, you cannot downgrade to any of the i Devices mentioned above in the list. Please note that the users with non-MC model do not need to follow this step and can skip to the next step.<\/li>\n<li>Now, you will need to navigate to the system folder, <em>C:WindowsSystem32driversetc<\/em> and look for a file which is termed as called hosts.<br \/>\n<a href=\"https:\/\/i0.wp.com\/www.amitbhawani.com\/blog\/wp-content\/uploads\/2010\/11\/hosts.png\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-medium wp-image-16678\" src=\"https:\/\/i0.wp.com\/www.amitbhawani.com\/blog\/wp-content\/uploads\/2010\/11\/hosts-300x224.png?resize=300%2C224\" alt=\"hosts\" width=\"300\" height=\"224\" srcset=\"https:\/\/i0.wp.com\/www.amitbhawani.com\/blog\/wp-content\/uploads\/2010\/11\/hosts.png?resize=300%2C224&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.amitbhawani.com\/blog\/wp-content\/uploads\/2010\/11\/hosts.png?resize=150%2C112&amp;ssl=1 150w, https:\/\/i0.wp.com\/www.amitbhawani.com\/blog\/wp-content\/uploads\/2010\/11\/hosts.png?w=599&amp;ssl=1 599w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/li>\n<li>The users who are on Mac OS X can browse this file by going to \/etc\/ and then find from \u201cGo to finder\u201d, after this you will have to open this file on any text editor like notepad (for windows) and Text edit (for Mac OS X) and add the following the code at the end of the file as <strong>74.208.105.171 gs.apple.com.<\/strong><br \/>\n<a href=\"https:\/\/i0.wp.com\/www.amitbhawani.com\/blog\/wp-content\/uploads\/2010\/11\/hosts-notepad.png\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-medium wp-image-16680\" src=\"https:\/\/i0.wp.com\/www.amitbhawani.com\/blog\/wp-content\/uploads\/2010\/11\/hosts-notepad-300x224.png?resize=300%2C224\" alt=\"hosts notepad\" width=\"300\" height=\"224\" srcset=\"https:\/\/i0.wp.com\/www.amitbhawani.com\/blog\/wp-content\/uploads\/2010\/11\/hosts-notepad.png?resize=300%2C224&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.amitbhawani.com\/blog\/wp-content\/uploads\/2010\/11\/hosts-notepad.png?resize=150%2C112&amp;ssl=1 150w, https:\/\/i0.wp.com\/www.amitbhawani.com\/blog\/wp-content\/uploads\/2010\/11\/hosts-notepad.png?w=600&amp;ssl=1 600w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/li>\n<li>Now after adding at the end, just <strong>Save<\/strong> and click on Exit from <strong>File<\/strong>.<\/li>\n<li>After adding that in the notepad, Now you are now ready to restore your i Device with the firmware which you have opted to download from the above mentioned list. Now allocate your device from the side bar of iTunes and press and hold <strong>Shift<\/strong> on Windows and <strong>left alt<\/strong> on Mac OS X then click on <strong>Restore<\/strong> tab. Now just release the pressed button and you need to navigate to the iPSW folder and select your downloaded firmware and then press <strong>OK<\/strong> to proceed.<br \/>\n<a href=\"https:\/\/i0.wp.com\/www.amitbhawani.com\/blog\/wp-content\/uploads\/2010\/11\/version.png\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-medium wp-image-16682\" src=\"https:\/\/i0.wp.com\/www.amitbhawani.com\/blog\/wp-content\/uploads\/2010\/11\/version-300x52.png?resize=300%2C52\" alt=\"version\" width=\"300\" height=\"52\" srcset=\"https:\/\/i0.wp.com\/www.amitbhawani.com\/blog\/wp-content\/uploads\/2010\/11\/version.png?resize=300%2C52&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.amitbhawani.com\/blog\/wp-content\/uploads\/2010\/11\/version.png?resize=150%2C26&amp;ssl=1 150w, https:\/\/i0.wp.com\/www.amitbhawani.com\/blog\/wp-content\/uploads\/2010\/11\/version.png?w=534&amp;ssl=1 534w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/li>\n<li>Now, it is time to relax after so much of work until iTunes does the rest for you by itself. Please do not open or do anything as i Tunes will downgrade to your required firmware. It might be possible that after certain updates i Tunes will give an error saying <strong>This i Device could not be restored. An unknown error occurred (1004 or 3194)<\/strong>, don\u2019t panic and ignore the message as the firmware has already installed on the device successfully.<\/li>\n<li>You will find that your device is still in <a title=\"Posts tagged with recovery mode\" href=\"https:\/\/www.amitbhawani.com\/blog\/put-iphone-in-recovery-dfu-mode\/\">recovery mode<\/a> by showing you a of \u201cConnect to iTunes\u201d on the screen. To fix this download, you will have to install a program called \u201cTiny Umbrella\u201d for (Windows \/ Mac OS X). Now just run this program and click on \u201cKick device out of recovery\u201d button. You should now see your device restarting in normal mode.<\/li>\n<\/ul>\n<p><a href=\"https:\/\/i0.wp.com\/www.amitbhawani.com\/blog\/wp-content\/uploads\/2010\/11\/tiny-umbrella.png\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-medium wp-image-16685\" src=\"https:\/\/i0.wp.com\/www.amitbhawani.com\/blog\/wp-content\/uploads\/2010\/11\/tiny-umbrella-300x173.png?resize=300%2C173\" alt=\"tiny umbrella\" width=\"300\" height=\"173\" srcset=\"https:\/\/i0.wp.com\/www.amitbhawani.com\/blog\/wp-content\/uploads\/2010\/11\/tiny-umbrella.png?resize=300%2C173&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.amitbhawani.com\/blog\/wp-content\/uploads\/2010\/11\/tiny-umbrella.png?resize=150%2C86&amp;ssl=1 150w, https:\/\/i0.wp.com\/www.amitbhawani.com\/blog\/wp-content\/uploads\/2010\/11\/tiny-umbrella.png?w=506&amp;ssl=1 506w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n<p>Now, you will find that your device is now running successfully the downloaded firmware which you wanted to downgrade your i Device to. You can also <a href=\"https:\/\/www.amitbhawani.com\/blog\/fix-iphone-restore-mode-loop-after-jailbreak-or-downgrade\/\" target=\"_blank\">fix i Phone restore mode loop after downgrade<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Recently Apple has released the latest i OS 4.2, but the biggest disadvantage of the latest firmware is it is still not yet jail breaked. Not only this but also a new boot ROM is found in all new i OS devices which doesn\u2019t allow the ultra-snow to unlock the device either which makes this [&hellip;]<\/p>\n","protected":false},"author":44,"featured_media":16686,"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-16675","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\/iOS-downgrade.png?fit=437%2C358&ssl=1","jetpack_sharing_enabled":true,"jetpack-related-posts":[{"id":16304,"url":"https:\/\/www.amitbhawani.com\/blog\/install-android-22-froyo-iphone-dual-boot-os\/","url_meta":{"origin":16675,"position":0},"title":"How to Install Android 2.2 Froyo on iPhone and Dual Boot OS","author":"Amit Bhawani","date":"November 11, 2010","format":false,"excerpt":"We have been enjoying the Apple iPhone with the iOS Operating System which runs flawless and is just awesome but recently we have started becoming fans of the Android phones and this is mainly because of the OS again. Now here is a option through which you can easily install\u2026","rel":"","context":"In &quot;Apple&quot;","block_context":{"text":"Apple","link":"https:\/\/www.amitbhawani.com\/blog\/category\/apple\/"},"img":{"alt_text":"Add Cydia Source","src":"https:\/\/i0.wp.com\/www.amitbhawani.com\/blog\/wp-content\/uploads\/2010\/11\/Add-Cydia-Source-200x300.png?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":12076,"url":"https:\/\/www.amitbhawani.com\/blog\/fix-iphone4-reception-issue\/","url_meta":{"origin":16675,"position":1},"title":"Fix iPhone 4 Reception Problem with i OS 4.0.1 \/ 4.1","author":"Tony Stark","date":"June 25, 2010","format":false,"excerpt":"There have been numerous reports claiming that the iPhone 4 has reception issues and the signals are dropping when someone holds the device with their hands. Apple had launched the new iPhone4 with a list of features which not even Gizmodo would expect including the Retina Display, Large Antenna on\u2026","rel":"","context":"In &quot;Apple&quot;","block_context":{"text":"Apple","link":"https:\/\/www.amitbhawani.com\/blog\/category\/apple\/"},"img":{"alt_text":"Hold iPhone Device Correctly","src":"https:\/\/i0.wp.com\/www.amitbhawani.com\/blog\/wp-content\/uploads\/2010\/06\/Hold-iPhone-Correctly-300x112.jpg?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":16675,"position":2},"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":16660,"url":"https:\/\/www.amitbhawani.com\/blog\/jailbreak-apple-ipad-ios-421-pwnagetool\/","url_meta":{"origin":16675,"position":3},"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":16675,"position":4},"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":16791,"url":"https:\/\/www.amitbhawani.com\/blog\/jailbreak-apple-iphone-4-ios-421\/","url_meta":{"origin":16675,"position":5},"title":"How to Jailbreak Apple iPhone 4 iOS 4.2.1","author":"Neal","date":"November 22, 2010","format":false,"excerpt":"Last time we saw on how to jailbreak the Apple iPad, now let'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\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":[]}],"_links":{"self":[{"href":"https:\/\/www.amitbhawani.com\/blog\/wp-json\/wp\/v2\/posts\/16675","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=16675"}],"version-history":[{"count":0,"href":"https:\/\/www.amitbhawani.com\/blog\/wp-json\/wp\/v2\/posts\/16675\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.amitbhawani.com\/blog\/wp-json\/wp\/v2\/media\/16686"}],"wp:attachment":[{"href":"https:\/\/www.amitbhawani.com\/blog\/wp-json\/wp\/v2\/media?parent=16675"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.amitbhawani.com\/blog\/wp-json\/wp\/v2\/categories?post=16675"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.amitbhawani.com\/blog\/wp-json\/wp\/v2\/tags?post=16675"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}