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Improvements, install script
Also update readme
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LukeeGD
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README.md
Normal file → Executable file
38
README.md
Normal file → Executable file
@ -1,18 +1,44 @@
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# 841-OTA-Downgrader
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Script that can be used to downgrade almost any 32-bit device to iOS 8.4.1
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Script that can be used to downgrade almost any supported 32-bit device to iOS 8.4.1
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### Prerequisites:
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- **Any jailbroken 32-bit iOS device**
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- **OpenSSH** installed on iOS device
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- **MTerminal** installed on iOS device (10.x users)
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- iOS 7 Pangu users should install [this](http://apt.saurik.com/debs/io.pangu.axe7_0.3_iphoneos-arm.deb)
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- iOS 8 Pangu users should install [this](http://apt.saurik.com/debs/io.pangu.xuanyuansword8_0.5_iphoneos-arm.deb)
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- A Linux distro on PC (Tested on **Lubuntu 16.04 live USB** and Arch Linux)
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- For VirtualBox users, add a New USB Filter in the VM settings
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- For VMWare users, enable Autoconnect USB Devices
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- The computer and device must be on the same network
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### How to use:
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- When the prerequisites are met, usage should be straightforward:
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1. Download or `git clone` this repo
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2. Open Terminal, cd to the directory where the scripts are located (eg. `cd /home/user/841-OTA-Downgrader`)
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3. Run `chmod +x install.sh restore.sh`
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4. Run `./install.sh`
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5. Run `./restore.sh`
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6. Follow instructions
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### Tools used by this script:
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- cURL
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- partialZipBrowser
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- tsschecker
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- [tsschecker](https://github.com/tihmstar/tsschecker)
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- bsdiff (bspatch)
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- kloader
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- futurerestore
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- [xpwntool](https://www.youtube.com/watch?v=fh0tB6fp0Sc)
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- [kloader](https://www.youtube.com/watch?v=fh0tB6fp0Sc)
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- [kloader5 (iOS 5)](http://www.pmbonneau.com/cydia/))
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- [kloader_hgsp (iOS 10)](https://twitter.com/nyan_satan/status/945203180522045440)
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- [futurerestore](https://github.com/tihmstar/futurerestore)
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### Tested on:
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### Devices tested on:
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- iPad3,3
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- iPhone5,2
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### Supported devices:
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#### All iPad 2, iPad 3, iPad 4, iPod 5, iPhone 4S, and iPhone 5 devices (**NOT 5C**)
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- iPad2,1
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- iPad2,2
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- iPad2,3
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23
install.sh
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23
install.sh
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@ -0,0 +1,23 @@
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#!/bin/bash
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function ubuntu {
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sudo apt update
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sudo apt install bsdiff curl ifuse libimobiledevice-utils libzip4 usbmuxd
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}
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function arch {
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sudo pacman -Sy bsdiff libcurl-compat libpng12 libzip openssl-1.0 usbmuxd
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sudo ln -sf /usr/lib/libzip.so.5 /usr/lib/libzip.so.4
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}
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clear
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echo "******* 841-OTA-Downgrader *******"
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echo " - by LukeZGD "
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echo
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echo "Install dependencies"
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select opt in "Ubuntu 16.04" "Arch Linux"; do
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case $opt in
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"Ubuntu 16.04" ) ubuntu; break;;
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"Arch Linux" ) arch; break;;
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esac
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done
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152
restore.sh
152
restore.sh
@ -53,25 +53,29 @@ key_n41=baf05fe0282f78c18c2e3842be4f9021919d586b55594281f5b5abd0f6e61495
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iv_n42=fdad2b7a35384fa2ffc7221213ca1082
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key_n42=74cd68729b800a20b1f8e8a3cb5517024a09f074eaa05b099db530fb5783275e
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rm -rf iP*/ tmp/ $(ls *.shsh2) BuildManifest.plist
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rm -rf iP*/ tmp/ $(ls *.shsh2)
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HardwareModel=$(ideviceinfo | grep 'HardwareModel' | cut -c 16-)
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HardwareModelLower=$(echo $HardwareModel | tr '[:upper:]' '[:lower:]' | sed 's/.\{2\}$//')
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ProductType=$(ideviceinfo | grep 'ProductType' | cut -c 14-)
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ProductVersion=$(ideviceinfo | grep 'ProductVersion' | cut -c 17-)
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VersionDetect=$(echo $ProductVersion | cut -c 1)
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UniqueChipID=$(ideviceinfo | grep 'UniqueChipID' | cut -c 15-)
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iBSS="iBSS.$HardwareModelLower.RELEASE"
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IPSW="${ProductType}_8.4.1_12H321_Restore"
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clear
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echo "******* 841-OTA-Downgrader *******"
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echo " - by LukeZGD "
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echo
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HardwareModel=$(ideviceinfo | grep 'HardwareModel' | cut -c 16-)
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HardwareModelLower=$(echo $HardwareModel | tr '[:upper:]' '[:lower:]' | sed 's/.\{2\}$//')
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ProductType=$(ideviceinfo | grep 'ProductType' | cut -c 14-)
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ProductVersion=$(ideviceinfo | grep 'ProductVersion' | cut -c 17-)
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UniqueChipID=$(ideviceinfo | grep 'UniqueChipID' | cut -c 15-)
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iBSS="iBSS.$HardwareModelLower.RELEASE"
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if [ ! $HardwareModel ]
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then
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echo "Please plug the device in before proceeding"
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echo
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exit
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elif [ $HardwareModel == iPad2,1 ] || [ $HardwareModel == iPad2,4 ] || [ $HardwareModel == iPad2,5 ] || [ $HardwareModel == iPad3,1 ] || [ $HardwareModel == iPad3,4 ] || [ $HardwareModel == iPod5,1 ]
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then
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NoBaseband=1
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fi
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echo "HardwareModel: $HardwareModel"
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@ -81,12 +85,10 @@ echo "UniqueChipID (ECID): $UniqueChipID"
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echo "iBSS: $iBSS"
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echo
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IPSW="${ProductType}_8.4.1_12H321_Restore"
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if [ ! -e ${IPSW}.ipsw ]
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then
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echo "iOS 8.4.1 IPSW is missing! Please put the IPSW on the same directory of this script"
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echo
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exit
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fi
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@ -97,7 +99,7 @@ then
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echo "Downloading tsschecker..."
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curl -L -# "https://github.com/tihmstar/tsschecker/releases/download/v212/tsschecker_v212_mac_win_linux.zip" -o "tmp/tsschecker.zip"
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echo "Extracting tsschecker..."
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unzip -j tmp/tsschecker.zip tsschecker_$platform -d tools/
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unzip -j tmp/tsschecker.zip tsschecker_$platform -d "tools/"
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chmod +x tools/tsschecker_$platform
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echo
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fi
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@ -112,7 +114,7 @@ then
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echo "Downloading futurerestore..."
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curl -L -# "http://api.tihmstar.net/builds/futurerestore/futurerestore-latest.zip" -o "tmp/futurerestore.zip"
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echo "Extracting futurerestore..."
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unzip -j tmp/futurerestore.zip futurerestore_$platform -d tools/
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unzip -j tmp/futurerestore.zip futurerestore_$platform -d "tools/"
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chmod +x tools/futurerestore_$platform
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echo
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fi
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@ -122,43 +124,56 @@ then
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exit
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fi
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echo "Downloading ota.json..."
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curl -L -# "https://api.ipsw.me/v2.1/ota.json/condensed" -o "tmp/ota.json"
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echo 'Copying ota.json to /tmp or $TMPDIR...'
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if [ $platform == macos ]
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if [ ! -e /tmp/ota.json ] && [ ! -e $TMPDIR/ota.json ]
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then
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cp tmp/ota.json $TMPDIR
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else
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cp tmp/ota.json /tmp
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echo "Downloading ota.json..."
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curl -L -# "https://api.ipsw.me/v2.1/ota.json/condensed" -o "tmp/ota.json"
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echo 'Copying ota.json to /tmp or $TMPDIR...'
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if [ $platform == macos ]
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then
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cp tmp/ota.json $TMPDIR
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else
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cp tmp/ota.json /tmp
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fi
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echo
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fi
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echo
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if [ ! -e tmp/ota.json ]
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if [ ! -e /tmp/ota.json ] && [ ! -e $TMPDIR/ota.json ]
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then
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echo "Download ota.json failed. Please run the script again"
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rm -rf tmp/
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exit
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fi
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echo "Downloading BuildManifest.plist..."
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OTAFirmware=$(curl "https://api.ipsw.me/v4/ota/download/$ProductType/12H321?prerequisite=12H143" -s -L -I -o /dev/null -w '%{url_effective}')
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pzb -g AssetData/boot/BuildManifest.plist $OTAFirmware
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echo "Downloading OTA Firmware..."
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curl -L -# "https://api.ipsw.me/v4/ota/download/$ProductType/12H321?prerequisite=12H143" -o "tmp/otafirmware.zip"
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echo "Extracting BuildManifest.plist..."
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unzip -j tmp/otafirmware.zip AssetData/boot/BuildManifest.plist -d "tmp/"
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echo
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if [ ! -e BuildManifest.plist ]
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if [ ! -e tmp/BuildManifest.plist ]
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then
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echo "Download BuildManifest.plist failed. Please run the script again"
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echo "Download/extract BuildManifest.plist failed. Please run the script again"
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rm -rf tmp/
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exit
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fi
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echo "Saving 8.4.1 blobs with tsschecker..."
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env "LD_PRELOAD=libcurl.so.3" tools/tsschecker_$platform -d $ProductType -i 8.4.1 -o -s -e $UniqueChipID -m BuildManifest.plist
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if [[ ! $NoBaseband ]]
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then
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env "LD_PRELOAD=libcurl.so.3" tools/tsschecker_$platform -d $ProductType -i 8.4.1 -o -s -e $UniqueChipID -m tmp/BuildManifest.plist
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else
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echo "Detected device has no baseband"
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env "LD_PRELOAD=libcurl.so.3" tools/tsschecker_$platform -d $ProductType -i 8.4.1 -o -s -b -e $UniqueChipID -m tmp/BuildManifest.plist
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fi
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echo
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if [ ! -e $(ls *.shsh2) ]
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then
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echo "Saving 8.4.1 blobs failed. Please run the script again"
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rm -rf tmp/ BuildManifest.plist
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exit
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fi
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echo "Extracting 8.4.1 IPSW..."
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unzip -q ${IPSW}.ipsw -d $IPSW/
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unzip -q ${IPSW}.ipsw -d "$IPSW/"
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echo
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echo "Decrypting iBSS..."
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@ -174,30 +189,51 @@ echo "Patching iBSS..."
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bspatch tmp/iBSS.dec2 tmp/pwnediBSS patches/$iBSS.patch
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echo
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if [[ $(echo $ProductVersion | cut -c 1) == 1 ]]
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if [[ $VersionDetect == 1 ]]
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then
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kloader="kloader_hgsp"
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elif [[ $(echo $ProductVersion | cut -c 1) == 5 ]]
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elif [[ $VersionDetect == 5 ]]
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then
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kloader="kloader5"
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else
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kloader="kloader"
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fi
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echo "Make sure SSH is installed and working on the device!"
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echo "Please enter Wi-Fi IP address of device for SSH connection:"
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read IPAddress
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echo "Will now connect to device using SSH"
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echo "Please enter root password when prompted (default is 'alpine')"
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echo
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echo "Copying stuff to device..."
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scp tools/$kloader tmp/pwnediBSS root@$IPAddress:/
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echo
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echo "Entering pwnDFU mode... (press Ctrl+C after entering root password to continue)"
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ssh root@$IPAddress "chmod 0755 /$kloader && /$kloader /pwnediBSS"
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echo
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if [[ $VersionDetect == 1 ]]
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then
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WifiAddr=$(ideviceinfo | grep 'WiFiAddress' | cut -c 14-)
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WifiAddrDecr=$(echo $(printf "%x\n" $(expr $(printf "%d\n" 0x$(echo "${WifiAddr}" | tr -d ':')) - 1)) | sed 's/\(..\)/\1:/g;s/:$//')
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mkdir mountdir
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echo "Mounting device using ifuse..."
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ifuse mountdir
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echo "Copying stuff to device..."
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cp "tools/$kloader" "tmp/pwnediBSS" "mountdir/"
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umount mountdir
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rm -rf mountdir
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echo
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echo "Enter MTerminal and run these commands:"
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echo
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echo "su"
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echo "(enter root password, default is 'alpine')"
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echo "nvram wifiaddr=$WifiAddrDecr"
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echo "cd /var/mobile/Media"
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echo "chmod 0755 kloader_hgsp"
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echo "./kloader_hgsp pwnediBSS"
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echo
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else
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echo "Make sure SSH is installed and working on the device!"
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echo "Please enter Wi-Fi IP address of device for SSH connection:"
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read IPAddress
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echo "Will now connect to device using SSH"
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echo "Please enter root password when prompted (default is 'alpine')"
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echo
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echo "Copying stuff to device..."
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scp tools/$kloader tmp/pwnediBSS root@$IPAddress:/
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echo
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echo "Entering pwnDFU mode... (press Ctrl+C after entering root password to continue)"
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ssh root@$IPAddress "chmod 0755 /$kloader && /$kloader /pwnediBSS"
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echo
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fi
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echo "Press home/power button once when screen goes black on the device, then press [enter]"
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read
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@ -205,4 +241,28 @@ echo "Will now proceed to futurerestore in 5 seconds..."
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sleep 5
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echo
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sudo env "LD_PRELOAD=libcurl.so.3" tools/futurerestore_$platform -t $(ls *.shsh2) --latest-baseband --use-pwndfu ${IPSW}.ipsw
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while [ ! $ScriptDone ]
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do
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if [[ ! $NoBaseband ]]
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then
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sudo env "LD_PRELOAD=libcurl.so.3" tools/futurerestore_$platform -t $(ls *.shsh2) --latest-baseband --use-pwndfu ${IPSW}.ipsw
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else
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echo "Detected device has no baseband"
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sudo env "LD_PRELOAD=libcurl.so.3" tools/futurerestore_$platform -t $(ls *.shsh2) --latest-baseband --use-pwndfu --no-baseband ${IPSW}.ipsw
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fi
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echo "futurerestore done!"
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echo "If futurerestore failed to download baseband or for some reason, you can choose to retry"
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echo "Retry? (y/n)"
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read retry
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if [ retry != y ] && [ retry != Y ]
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then
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ScriptDone=1
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fi
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done
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rm -rf iP*/ tmp/ $(ls *.shsh2)
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echo "Script done!"
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