3uTools-Forum

Hi
I am trying to flash ios 10.3.1 to an ipad 4 but i get the following error ,
"error unable to switch dfu mode to recovery mode" it happens at 11% of the flash
I cant get the ipad out of DFU mode with the button combo either ,has anyone any experience with this
hope you can help
thanks
John

johnhughes wrote:Hi
I am trying to flash ios 10.3.1 to an ipad 4 but i get the following error ,
"error unable to switch dfu mode to recovery mode" it happens at 11% of the flash
I cant get the ipad out of DFU mode with the button combo either ,has anyone any experience with this
hope you can help
thanks
John

Hello Dear,
1. Please change your usb cable and flash again.
2. Please try to check the drive of your computer. Right- click "Computer", then click "Manage" → "Device Manger".

I have the same problem with Iphone 4 Rev A (8 GB GSM), i cant donwgrade from 7.1.2 to 6.1.3. i dont have shsh.

21:46:31 Please connect USB cable to apple mobile device, make sure you are in DFU mode
21:46:31 Retrieving information from apple mobile device
21:46:31 SRTG:[iBoot-574.4]
21:46:31 Device ECID: 00000079EA103D73
21:46:31 Product Type: iPhone3,2
21:46:31 Product Name: iPhone4(GSM Rev A)
21:46:31 MAIN CPU ID : 8930
21:46:31 Verifying firmware file
21:46:38 MD5 value of firmware : 97C001BF6E4BCF5D832AF97B762CAE24
21:46:38 Filename of firmware : "iPhone3,2_6.1.3_10B329_Restore ipsw"
21:46:38 This is the official firmware after comparison
21:46:38 Unzipping firmware file
21:46:46 Querying for SHSH file from 3uTools server
21:46:59 Querying for SHSH file from 3uTools server
21:47:14 Querying for SHSH file from 3uTools server
21:47:25 No SHSH file backup on 3uTools server, unable to use the version (6.1.3(10B329)) firmware to flash iOS system
21:47:42 SHSH file include 6 signature, 1 certificate, 1 source, 1 type, as seen below:
21:47:42 illb ibss ibec rdsk krnl apticket cert apple apple
21:47:42 Decoding RamDisk
21:47:42 The capacity of root partition : 1350MB
21:47:42 Encrypting RamDisk
21:47:43 Processing RootFs
21:50:16 Processing iBSS file and iBEC file
21:50:16 Removing baseband file
21:50:16 Signing firmware
21:50:17 Transferring Pwned DFU Loader
21:50:20 Apple mobile device will connect to DFU mode automatically
21:50:20 Retrieving information from apple mobile device
21:50:20 Transferring iBSS
21:50:21 Apple mobile device will connect to DFU mode automatically
21:50:21 Retrieving information from apple mobile device
21:50:21 Transferring iBEC
21:50:24 Apple mobile device will connect to DFU mode automatically

What can i do?.
I try itunes, error 1601 or 1604.
Sry for my bad english.
Richard.

Hello, please operate as this tutorial to downgrade from iOS 7.1.2 to iOS 6.1.3: http://www.3u.com/tutorial/articles/82/3utools-downgrade-iphone4-without-shsh
If there is any error, please offer me the screenshot on 3uTools.

iphone 5s failed to switch recovery mode

Hello Game Gad and all,

you have got Nand problem, not stability of power supply / short circuit in the nand power rail or nand can't be read/wright - I/O driver internal fault.