Legacy-iOS-Kit/resources/downgrade.sh
2021-10-26 11:33:18 +08:00

274 lines
11 KiB
Bash
Executable File

#!/bin/bash
iDeviceRestore() {
Log "Proceeding to idevicerestore... (Enter root password of your PC/Mac when prompted)"
[[ $platform == "macos" ]] && sudo codesign --sign - --force --deep $idevicerestore
mkdir shsh
mv $SHSH shsh/${UniqueChipID}-${ProductType}-${OSVer}.shsh
$idevicerestore -ewy $IPSWRestore.ipsw
if [[ $? != 0 && $platform != "linux" ]]; then
Log "An error seems to have occurred when running idevicerestore."
if [[ $platform == "macos" ]]; then
Echo "* If this is the \"Killed: 9\" error or similar, try these steps:"
Echo "* Using Terminal, cd to where the script is located, then run"
Echo "* sudo codesign --sign - --force --deep resources/tools/idevicerestore_macos"
elif [[ $platform == "win" ]]; then
Echo "* Windows users may encounter errors like \"Unable to send APTicket\" or \"Unable to send iBEC\" in the restore process."
Echo "* To fix this, follow troubleshooting steps here: https://github.com/LukeZGD/iOS-OTA-Downgrader/wiki/Troubleshooting#windows"
fi
fi
}
FRBaseband() {
local BasebandSHA1L
if [[ $DeviceProc == 7 ]] || [[ $ProductType == "iPhone5,1" && $Baseband5 != 0 ]]; then
mkdir -p saved/baseband 2>/dev/null
cp -f $IPSWRestore/Firmware/$Baseband saved/baseband
elif [[ ! -e saved/baseband/$Baseband ]]; then
Log "Downloading baseband..."
$partialzip $BasebandURL Firmware/$Baseband $Baseband
$partialzip $BasebandURL BuildManifest.plist BuildManifest.plist
mkdir -p saved/$ProductType saved/baseband 2>/dev/null
mv $Baseband saved/baseband
mv BuildManifest.plist saved/$ProductType
BuildManifest="saved/$ProductType/BuildManifest.plist"
else
BuildManifest="saved/$ProductType/BuildManifest.plist"
fi
BasebandSHA1L=$(shasum saved/baseband/$Baseband | awk '{print $1}')
if [[ ! -e $(ls saved/baseband/$Baseband) || $BasebandSHA1L != $BasebandSHA1 ]]; then
rm -f saved/baseband/$Baseband saved/$ProductType/BuildManifest.plist
Error "Downloading/verifying baseband failed. Please run the script again"
fi
}
FutureRestore() {
local ExtraArgs=()
[[ $IPSWCustomW != 2 ]] && ExtraArgs=("--use-pwndfu")
if [[ $DeviceProc == 7 ]]; then
ExtraArgs+=("-s" "$IPSWRestore/Firmware/all_flash/$SEP" "-m" "$BuildManifest")
else
ExtraArgs+=("--no-ibss")
fi
Log "Proceeding to futurerestore..."
if [[ $Baseband == 0 ]]; then
Log "Device $ProductType has no baseband"
$futurerestore -t "$SHSH" --no-baseband "${ExtraArgs[@]}" "$IPSWRestore.ipsw"
else
FRBaseband
$futurerestore -t "$SHSH" -b saved/baseband/$Baseband -p $BuildManifest "${ExtraArgs[@]}" "$IPSWRestore.ipsw"
fi
}
SetIPSWCustomW() {
if [[ $DeviceProc == 7 ]]; then
IPSWCustomW=2
futurerestore=$futurerestore2
else
IPSWCustom="${IPSWCustom}W"
IPSWCustomW=1
fi
}
Downgrade() {
local IPSWExtract
local IPSWSHA1
local IPSWSHA1L
local Jailbreak
local JBName
local Verify=1
Log "Select your options when asked. If unsure, go for the defaults (press Enter/Return)."
echo
if [[ $OSVer == "Other" ]]; then
if [[ $platform == "linux" ]]; then
Input "Select your IPSW file in the file selection window."
IPSW="$(zenity --file-selection --file-filter='IPSW | *.ipsw' --title="Select IPSW file")"
IPSW="${IPSW%?????}"
Log "Selected IPSW file: $IPSW.ipsw"
Input "Select your SHSH file in the file selection window."
SHSH="$(zenity --file-selection --file-filter='SHSH | *.shsh *.shsh2' --title="Select SHSH file")"
Log "Selected SHSH file: $SHSH"
else
Input "Enter the names of your IPSW and SHSH files below."
Echo "* Move/copy the IPSW and SHSH files to the directory where the script is located"
Echo "* When entering the names of IPSW and SHSH, enter the full name including the file extension"
Echo "* Make sure to create a backup of the SHSH"
read -p "$(Input 'Enter name of IPSW file:')" IPSW
IPSW="$(basename "$IPSW" .ipsw)"
read -p "$(Input 'Enter name of SHSH file:')" SHSH
fi
elif [[ $ProductType == "iPad2,5" || $ProductType == "iPad2,6" || $ProductType == "iPad2,7" ]]; then
Echo "* Jailbreak Option is disabled on iPad mini 1 devices."
Echo "* If you want to jailbreak your device, you need to sideload EtasonJB, HomeDepot, or daibutsu manually."
Input "Press Enter/Return to continue (or press Ctrl+C to cancel)"
read -s
elif [[ $DeviceProc != 7 ]]; then
Input "Jailbreak Option"
Echo "* When this option is enabled, your device will be jailbroken on restore."
Echo "* This option is enabled by default (Y)."
read -p "$(Input 'Enable this option? (Y/n):')" Jailbreak
if [[ $Jailbreak != 'N' && $Jailbreak != 'n' ]]; then
Jailbreak=1
if [[ $ProductType == "iPhone4,1" || $ProductType == "iPad2,4" || $ProductType == "iPod5,1" ]] ||
[[ $ProductType == "iPad3"* && $DeviceProc == 5 ]]; then
[[ $OSVer == "8.4.1" ]] && JBDaibutsu=1
fi
if [[ $JBDaibutsu == 1 ]]; then
JBName="daibutsu"
elif [[ $OSVer == "8.4.1" ]]; then
JBName="EtasonJB"
elif [[ $OSVer == "6.1.3" ]]; then
JBName="p0sixspwn"
fi
Log "Jailbreak option enabled. Using $JBName for the jailbreak"
fi
echo
fi
if [[ $Mode == "Downgrade" && $ProductType == "iPhone5,1" && $Jailbreak != 1 ]]; then
Input "Latest Baseband Option"
Echo "* iOS-OTA-Downgrader flashes the iOS 8.4.1 baseband to iPhone5,1."
Echo "* When this option is enabled, the latest baseband will be flashed instead, but beware of problems it may cause."
Echo "* This option is disabled by default (N)."
read -p "$(Input 'Enable this option? (y/N):')" Baseband5
if [[ $Baseband5 == 'Y' || $Baseband5 == 'y' ]]; then
Baseband5=0
else
BasebandURL=$(cat $Firmware/12H321/url)
Baseband="Mav5-8.02.00.Release.bbfw"
BasebandSHA1="db71823841ffab5bb41341576e7adaaeceddef1c"
fi
echo
fi
if [[ $OSVer != "Other" ]]; then
IPSW="${IPSWType}_${OSVer}_${BuildVer}_Restore"
IPSWCustom="${IPSWType}_${OSVer}_${BuildVer}_Custom"
if [[ $Jailbreak != 1 && $platform == "win" ]]; then
SetIPSWCustomW
elif [[ $Jailbreak != 1 ]]; then
Input "Custom IPSW Option"
Echo "* When this option is enabled, a custom IPSW will be made for the restore."
Echo "* Enable this option later if you experience issues with futurerestore."
Echo "* This option is disabled by default (N)."
read -p "$(Input 'Enable this option? (y/N):')" IPSWCustomW
if [[ $IPSWCustomW == 'Y' || $IPSWCustomW == 'y' ]]; then
SetIPSWCustomW
fi
echo
fi
if [[ $Jailbreak == 1 || ! -z $IPSWCustomW ]]; then
[[ -e "$IPSWCustom.ipsw" ]] && Verify=
fi
if [[ $Jailbreak == 1 || $IPSWCustomW == 1 ]] &&
[[ $Verify == 1 && $platform != "win" ]]; then
Input "Memory Option for creating custom IPSW"
Echo "* This option makes creating the custom IPSW faster, but it requires at least 8GB of RAM."
Echo "* If you do not have enough RAM, disable this option and make sure that you have enough storage space."
Echo "* This option is enabled by default (Y)."
read -p "$(Input 'Enable this option? (Y/n):')" JBMemory
echo
fi
[[ $IPSWCustomW != 2 ]] && SaveOTABlobs
if [[ ! -e "$IPSW.ipsw" && $Verify == 1 ]]; then
Log "iOS $OSVer IPSW for $ProductType cannot be found."
Echo "* If you already downloaded the IPSW, move/copy it to the directory where the script is located."
Echo "* Do NOT rename the IPSW as the script will fail to detect it."
Echo "* The script will now proceed to download it for you. If you want to download it yourself, here is the link: $(cat $Firmware/$BuildVer/url)"
Log "Downloading IPSW... (Press Ctrl+C to cancel)"
curl -L $(cat $Firmware/$BuildVer/url) -o tmp/$IPSW.ipsw
mv tmp/$IPSW.ipsw .
fi
if [[ $Verify == 1 ]]; then
Log "Verifying IPSW..."
IPSWSHA1=$(cat $Firmware/$BuildVer/sha1sum)
Log "Expected SHA1sum: $IPSWSHA1"
IPSWSHA1L=$(shasum $IPSW.ipsw | awk '{print $1}')
Log "Actual SHA1sum: $IPSWSHA1L"
if [[ $IPSWSHA1L != $IPSWSHA1 ]]; then
Error "Verifying IPSW failed. Your IPSW may be corrupted or incomplete. Delete/replace the IPSW and run the script again" \
"SHA1sum mismatch. Expected $IPSWSHA1, got $IPSWSHA1L"
fi
Log "IPSW SHA1sum matches."
elif [[ -e "$IPSWCustom.ipsw" ]]; then
Log "Found existing Custom IPSW. Skipping IPSW verification."
Log "Setting restore IPSW to: $IPSWCustom.ipsw"
IPSWRestore=$IPSWCustom
fi
if [[ $DeviceState == "Normal" && $iBSSBuildVer == $BuildVer && -e "$IPSW.ipsw" ]]; then
Log "Extracting iBSS from IPSW..."
mkdir -p saved/$ProductType 2>/dev/null
unzip -o -j $IPSW.ipsw Firmware/dfu/$iBSS.dfu -d saved/$ProductType
fi
else
IPSWCustom=0
fi
[[ $DeviceState == "Normal" ]] && kDFU
if [[ $Jailbreak == 1 || $IPSWCustomW == 1 ]]; then
IPSW32
IPSWExtract="$IPSWCustom"
elif [[ $IPSWCustomW == 2 && $Verify != 1 ]]; then
IPSWExtract="$IPSWCustom"
else
IPSWExtract="$IPSW"
fi
Log "Extracting IPSW: $IPSWExtract.ipsw"
unzip -oq "$IPSWExtract.ipsw" -d "$IPSWExtract"/
if [[ $IPSWCustomW == 2 ]]; then
IPSW64
pwnREC
local APNonce=$($irecovery -q | grep "NONC" | cut -c 7-)
Log "APNonce: $APNonce"
SaveOTABlobs $APNonce
elif [[ $Jailbreak != 1 && $OSVer != "Other" && $IPSWCustomW != 1 ]]; then
Log "Preparing for futurerestore... (Enter root password of your PC/Mac when prompted)"
cd resources
[[ $platform == "linux" ]] && $SimpleHTTPServer || $SimpleHTTPServer &
ServerRunning=1
cd ..
fi
if [[ ! $IPSWRestore ]]; then
Log "Setting restore IPSW to: $IPSW.ipsw"
IPSWRestore="$IPSW"
fi
if [[ $DeviceProc == 7 && $IPSWCustomW != 2 ]]; then
Log "Sending dummy file"
$irecovery -f restore.cmd
sleep 2
fi
if [[ $Jailbreak == 1 || $IPSWCustomW == 1 ]]; then
iDeviceRestore
else
FutureRestore
fi
echo
Log "Restoring done!"
Log "Downgrade script done!"
}