luu123

Downgrade and dualboot status of almost all iOS devices

UPDATED: 2024-06-22

• Reddit mirror: https://www.reddit.com/r/iOSDowngrade/comments/j1x7iv/downgrade_and_dualboot_status_of_almost_all_ios/
• GitHub Gist mirror: https://gist.github.com/LukeZGD/9d781f1b03a69fa46869384a9407a41a
• As of updating this post, there is a downgrade tool that utilizes a SEP exploit released. However its device support is currently limited: https://limefix.tech/?product=limefix-sep-utility-testing
• Save SHSH blobs for signed iOS versions using TSS Saver or blobsaver
• GitHub repo for futurerestore nightly: https://github.com/futurerestore/futurerestore
• For Windows builds of futurerestore, go to the Discord server linked in the readme

luu123

Inspired by https://infosec.exchange/@jjtech/112612685494089718

Method 1: LLDB

Step 0

Reboot into Recovery OS + Disable SIP

csrutil disable

luu123

Modern Arch linux installation guide

Table of contents

• Introduction
• Preliminary Steps
• Main installation
  • Disk partitioning
  • Disk formatting
• Disk mounting

luu123

Install libimobiledevice on Mac OS X
So you'd like to manage your iOS devices by command line?
You can use libimobiledevice tools for that.
Easy on Linux. Let's see how it is on Mac OS X.

You'll need to:
1. install Xcode
2. start Xcode and agree to it's license
3. install Xcode command line tools (Start Xcode, Go to Preferences -> Downloads tab)
4. install homebrew by this command (sudo password will be prompted)

luu123

Here's what you do!

1. Terminal: Unzip the ipa (it's just a zip file after all)
  unzip -q App.ipa
  
1a, You will need to have the entitlements file, this information is needed during signing.
  codesign -d --entitlements :- "Payload/App.app"
  
2. Terminal: This will produce a `Payload/` directory. Remove the existing code signature.
  rm -rf Payload/App.app/_CodeSignature

luu123

Problem

In Arch Linux mkinitcpio -p linux

shows

Possibly missing firmware for module: aic94xx
 Possibly missing firmware for module: wd719x

luu123

#!/bin/bash

# generate new personal ed25519 ssh key
ssh-keygen -o -a 100 -t ed25519 -f ~/.ssh/id_ed25519 -C "rob thijssen <[email protected]>"

# generate new host cert authority (host_ca) ed25519 ssh key
# used for signing host keys and creating host certs
ssh-keygen -t ed25519 -f manta_host_ca -C manta.network

eval "$(ssh-agent -s)"

luu123

# copy and paste oneliner below to run
# curl -s https://gist.githubusercontent.com/ilude/32aec45964bc1207810f7e6e49544064/raw/%21proxmox_setup.sh?$(date +%s) | /bin/bash -s

# Disable Commercial Repo
sed -i "s/^deb/\#deb/" /etc/apt/sources.list.d/pve-enterprise.list

# Add PVE Community Repo
echo "deb http://download.proxmox.com/debian/pve $(grep "VERSION=" /etc/os-release | sed -n 's/.*(\(.*\)).*/\1/p') pve-no-subscription" > /etc/apt/sources.list.d/pve-no-enterprise.list

# setup no nag script to run on upgrade

luu123

# I use MacOS VMs from github for iOS development.
# By no suprise they are a bit slow and have a lot of things I don't use
# Hence this script for lighter and better VM for my iOS development and builds
# GUI and animation related things to tweak
defaults write NSGlobalDomain NSAutomaticWindowAnimationsEnabled -bool false
defaults write NSGlobalDomain NSWindowResizeTime -float 0.001
defaults write -g QLPanelAnimationDuration -float 0
defaults write com.apple.dock autohide-time-modifier -float 0
defaults write com.apple.dock launchanim -bool false
sudo sysctl debug.lowpri_throttle_enabled=0

luu123

#!/bin/bash

echo "LC_ALL=en_US.UTF-8" | sudo tee -a /etc/environment
echo "en_US.UTF-8 UTF-8" | sudo tee -a /etc/locale.gen
echo "LANG=en_US.UTF-8" | sudo tee -a /etc/locale.conf
sudo locale-gen en_US.UTF-8