Iphone 4 Flash Failed On 3utool

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  • 3uTools on 32-bit and 64-bit PCs. This download is licensed as freeware for the Windows (32-bit and 64-bit) operating system on a laptop or desktop PC from iphone tools without restrictions. 3uTools 2.38.010 is available to all software users as a free download for Windows 10 PCs but also without a hitch on Windows 7 and Windows 8.
  • May 27, 2019  Also Check: iPhone Flash Tool It automatically detect your iOS device and select compatible firmware for your device. 3uTools latest released is avail to direct download from its official link below. If you are interested, then follow the link to start download the tool now.
  • Mar 15, 2017 The iPhone 4 is quite an old phone now, but lots of people still own and even use them. The latest, and the only signed, version of iOS for the iPhone 4 is iOS 7.1.2. This is quite an old operating system, but can still sometimes lag behind on the iPhone 4. Lots of people, including myself, would rather have iOS 6 running on their iPhone 4.
  • 1Process
    • 1.3iPhone side (Procedure)

Mar 15, 2017  Once the firmware version is selected and the iPhone is in DFU mode, click the Flash button on the. The pop-up that asks if I want to do a mandatory flash doesn’t come up, so it just says it failed and I can’t do anything. PLEASE HELP ME! La Sam April 5, 2017 at 6:24 pm. I’ve tried to downgrade iphone 4 from ios 7.1.2 TO.

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WindowsWindows

Process

iTunes side

iTunes has pretty much no say in how the restore goes along. It will send the DeviceTree, RAMDisk, and Kernel (respectively, as far as I know), but in firmwares 1.1.1 and up the program on the RAMDisk pretty much runs the show. On the Restore RAMDisk, it is called 'restored_external'. On the Update RAMDisk, it is called 'restored_update'.

iPhone side (Pre-Restore Preparation)

Code that enables USB MUX (kernel module that forwards USB connections to TCP ports) by Comex: http://pastie.org/970295See also: USBMuxConnectByPort

iPhone side (Procedure)

  • Wait For Storage Device (wait_for_storage_device)
  • Create Filesystem Partitions (create_filesystem_partitions)
  • ASR Stuff (restore_images)
  • Mount Filesystems (mount_filesystems)
  • Fix Up /Var (fixup_var)
  • Unmount Filesystems (unmount_filesystems)
  • Clear Persistent Boot Args (clear_persistent_boot_args)
  • NOR Update Prep(update_NOR)

Actual NOR Update Routine(Img3_update_NOR)

Iphone 4 Flash Failed On 3utool Computer

During this procedure, the system will start flashing the NOR. Interestingly, on devices that don't actually have a NOR (since the iPod touch (3rd generation)), this process still runs and flashes to a special firmware section of the NAND.

Iphone 4 Flash Failed On 3utool Screen

  • Flash Individual NOR Image(Img3_flash_NOR_image)
  • Update Baseband (update_baseband)
  • Set Boot Stage (set_boot_stage)
  • End NAND Epoch Update (end_nand_epoch_update)
  • Set Final NVRAM Arguments (no official name)

Computer-Side Restore Log

iPhone-Side Log (iPhone 4 on 4.0)

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