Are
you still using iPhone 4?
The iPhone 4 has already been discontinued from the iOS update, but surprisingly it's also the last iPhone to be able to untethered jailbreak with the latest version. The checkra1n string jailbreak by checkm8 is very useful now, but until 10 years ago, the iPhone 4 is quite useful as a device that can always perform the string jailbreak by using the powerful Bootroom exploit called "limera1n exploit". did.
This time, I will introduce a tool that can unconditionally complete downgrade or jailbreak iPhone 4 to iOS 6.1.3. There are no prerequisites.
Those who have been jailbroken for a long time seem to have saved SHSH, but this tool still has certain advantages.
I think it will be much easier to operate than the existing tools.
cherryflowerJB
Version: 1.4.2 beta 1-1
Supported operating environment
macOS 10.13 or later
corresponding device
iPhone 4 [iPhone3,1]
JB compatible iOS version
6.1.3 [10B329]
IOS version for Downgrade only
4.3, 4.3.3, 4.3.5, 5.x, 6.x
Download link: Download
Currently only macOS. Eventually, Jailbreak support
for iOS 4 and 5, as well as iPhone 5 (with ios 7 SHSH) will be available
How to use
Download the tool from the download link
and unzip the zip.
iPhone3,1_6.1.3_10B329_Restore.ipsw : About 980 MB
iPhone3,1_7.1.2_11D257_Restore.ipsw : About 1.2 GB
Also store these two files in the unzipped folder.
After unzipping, open terminal. After typing'cd' as shown in
the image below, drag/drop the unzipped folder to the terminal screen.
After pressing Enter to move to "cherryfloverJB", execute
the following command.
./cherryJB <in> <out> -memory -derebusantiquis
<7.1.2 ipsw>
*If you do not jailbreak, use "cherry" instead of
"cherryJB".
In this case, I want to use iOS 6.1.3, so it will be like this.
./cherryJB iPhone3,1_6.1.3_10B329_Restore.ipsw
iPhone3,1_6.1.3_10B329_Custom.ipsw -memory -derebusantiquis
iPhone3,1_7.1.2_11D257_Restore.ipsw
If all goes well, you will have a CFW called
iPhone3,1_6.1.3_10B329_Custom.ipsw.
Connect iPhone 4 to mac in DFU mode, follow the steps below to get
SHSH of iOS 7.1.2 and convert the file to xml format. This CFW is device
specific. If you want to downgrade another iPhone 4, create a CFW for that
device again.
After creating the CFW Custom IPSW, restore iPhone 4. Please
note that all data will be erased.
Connect iPhone 4 in DFU Mode and set it to pnwedDFU mode with the Using
command.
./pwnedDFU -p
Next, get SHSH for iOS 7.1.2.
./idevicerestore -t
iPhone3,1_7.1.2_11D257_Restore.ipsw
The obtained SHSH is saved under the name'shsh Folder
Remame SHSH 7.1.2 to 6.1.3
Finally, run restore to finish.
./idevicerestore -e -w
iPhone3,1_6.1.3_10B329_Custom.ipsw
Release
If you want to release after applying this exploit, there is a work
to do before restoring normally.
Go to'remove_for_i4' on the terminal and connect your iPhone 4 in
DFU Mode
./disable
Run. It is successful if the device is in recovery mode after
rebooting. Let's restore it with iTunes as it is.
How it works
As you may be familiar (?), iBoot exploit that works on iOS 7 is
used.
When you start the device, the usual flat design Apple Logo
appears. After a few seconds, the exploit will activate and the display
will switch to the old Apple Logo, which has a three-dimensional effect. At
this point, iOS 6 starts to boot, and iOS will start in the jailbroken state.
By the way, the jailbreak state is Bootloader-based jailbreak as
used in iPhone 3GS. p0sixspwn is not used.
verbose boot
Although there are options for redsn0w and checkra1n, this tool can
also display the boot log at startup. Info.plist in the bundle
(Location:'FirmwareBundles/CHERRYJB_[device]_[version]_[build].bundle/Info.plist')
By adding "-v" to boot-args, you can boot with verbose
boot.
cs_enforcement_disable=1
amfi_get_out_of_my_way=1
cs_enforcement_disable=1
amfi_get_out_of_my_way=1 -v
Video How To Use
Credit To: cherryflowerJB
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