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libimobiledevice / libirecovery

Library and utility to talk to iBoot/iBSS via USB on Mac OS X, Windows, and Linux
https://libimobiledevice.org
GNU Lesser General Public License v2.1
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-n false positive; stays in DFU mode #50

Closed cmdpwnd closed 5 years ago

cmdpwnd commented 5 years ago

Model: iPhone 5s

root@kali:~# lsusb | grep Apple
Bus 004 Device 005: ID 05ac:1227 Apple, Inc. Mobile Device (DFU Mode)
root@kali:~# irecovery -vv -r
Attempting to connect... 
opening device 05ac:1227...
Setting to configuration 1
Setting to interface 0:0
Connected to iPhone6,1, model n51ap, cpid 0x8960, bdid 0x00
root@kali:~# irecovery -vv -m
Attempting to connect... 
opening device 05ac:1227...
Setting to configuration 1
Setting to interface 0:0
Connected to iPhone6,1, model n51ap, cpid 0x8960, bdid 0x00
DFU Mode
root@kali:~# irecovery -vv -n
Attempting to connect... 
opening device 05ac:1227...
Setting to configuration 1
Setting to interface 0:0
Connected to iPhone6,1, model n51ap, cpid 0x8960, bdid 0x00
Command completed successfully
root@kali:~# irecovery -vv -m
Attempting to connect... 
opening device 05ac:1227...
Setting to configuration 1
Setting to interface 0:0
Connected to iPhone6,1, model n51ap, cpid 0x8960, bdid 0x00
DFU Mode
root@kali:~#

Side note: Is it possible to reflash & keep data intact?

nikias commented 5 years ago

This is not a false positive. Also, irecovery -n is meant for Recovery, not DFU Mode. The device has broken boot images so it stays in DFU mode is my guess. Yes you can restore without losing device data using idevicerestore (if the user filesystem was not damaged).

cmdpwnd commented 5 years ago

Alright, I thought irecovery was for recovery mode & DFU mode. You're saying use idevicerestore... and that it can upload the IPSW without wiping userdata while in DFU mode?

nikias commented 5 years ago

If you just use idevicerestore -l or pass the ipsw directly as in idevicerestore iPhoneXXX.ipsw it will perform a "user upgrade install" which preserves user data under normal circumstances. Please mind though that I cannot guarantee for anything (e.g. if the user data partition is damaged it might decide to wipe it without warning).

nikias commented 5 years ago

Also irecovery tool is for DFU mode, it's just that in DFU mode you can't do much except loading the next stage bootloader image.

cmdpwnd commented 5 years ago

In passing the IPSW directly, is the decision to wipe the user partition controllable (i.e. enforce keeping data despite error) or is it in the guise of some internal continuity check on the device itself? It would be nice to be able to access & read/copy the user partition prior, but I've never seen any implementation of this documented.

cmdpwnd commented 5 years ago

To summarize: When in DFU Mode, irecovery only allows you to attempt rebooting the device into Recovery Mode via irecovery -n. If this fails or irecovery -m still shows DFU mode afterward, try using idevicerestore to restore your IPSW (firmware). This will allow you to keep your user data (almost always).