From 2522182a1c29c9190d5e49af07802dc693a23f75 Mon Sep 17 00:00:00 2001
From: LukeeGD <l32luke@gmail.com>
Date: Sun, 15 Mar 2020 10:43:07 +0800
Subject: [PATCH] x86_64 only

---
 README.md  | 10 +++++-----
 restore.sh | 15 ++++++---------
 2 files changed, 11 insertions(+), 14 deletions(-)

diff --git a/README.md b/README.md
index f7e4b38..f537043 100755
--- a/README.md
+++ b/README.md
@@ -1,19 +1,19 @@
 # 32bit-OTA-Downgrader
-### Downgrade 32-bit iOS devices to iOS 8.4.1 or iOS 6.1.3 (see supported devices below)
+### Downgrade/restore 32-bit iOS devices to iOS 8.4.1 or iOS 6.1.3 (see supported devices below)
 - **Please see "Other notes" below to serve as answers for FAQs**
 
-## Supported devices (iOS 8.4.1 downgrade):
+## Supported devices (iOS 8.4.1):
 
 - All A5, A5X, A6, and A6X devices **except iPhone5,3 and 5,4 (iPhone 5C)** are supported
 
-## Supported devices (iOS 6.1.3 downgrade):
+## Supported devices (iOS 6.1.3):
 
 - Only iPhone 4S and iPad 2 devices except iPad2,4 (iPad 2 Rev A) are supported
 
 ## Prerequisites:
 - A supported 32-bit iOS device **jailbroken** on any version
 - **iOS [8.4.1](https://ipsw.me/8.4.1) or [6.1.3](https://ipsw.me/6.1.3) IPSW** for your device (the script can also download it for you)
-- A **Linux install/live USB** (see distros tested on below) (a live USB can be easily created with tools like [balenaEtcher](https://www.balena.io/etcher/) or [Rufus](https://rufus.ie/))
+- A 64-bit **Linux install/live USB** (see distros tested on below) (a live USB can be easily created with tools like [balenaEtcher](https://www.balena.io/etcher/) or [Rufus](https://rufus.ie/))
 - **macOS** (tested on 10.13 and 10.14 only) should also work, but I won't be able to provide support when the script breaks
 - iOS 7/8 Pangu users: Install the [latest Pangu 7.1.x Untether (deb)](http://apt.saurik.com/debs/io.pangu.axe7_0.3_iphoneos-arm.deb) or [latest Pangu 8.0-8.1.x Untether (deb)](http://apt.saurik.com/debs/io.pangu.xuanyuansword8_0.5_iphoneos-arm.deb)
 - iOS 9 and below users: Install [OpenSSH](https://cydia.saurik.com/package/openssh/); The computer and iOS device must be on the same network for SSH to work
@@ -25,7 +25,7 @@
 3. Open Terminal, cd to the directory where the script is located (example: `cd /home/user/32bit-OTA-Downgrader`)
 4. Run `chmod +x restore.sh`
 5. Run `./restore.sh`
-6. Select option to be used (8.4.1/6.1.3 downgrade)
+6. Select option to be used
 7. Follow instructions
 
 ## Other notes:
diff --git a/restore.sh b/restore.sh
index 7d6f6e4..ffad3bf 100755
--- a/restore.sh
+++ b/restore.sh
@@ -432,21 +432,14 @@ function Ubuntu {
 }
 
 function Ubuntu1804 {
-    mname=$(uname -m)
-    if [ $mname == 'x86_64' ]; then
-        mtype='amd64'
-    else
-        mtype='i386'
-        mname=$mtype
-    fi
     sudo apt -y install binutils
     mkdir tmp
     cd tmp
     apt download -o=dir::cache=. libcurl3
     ar x libcurl3* data.tar.xz
     tar xf data.tar.xz
-    sudo cp usr/lib/$mname-linux-gnu/libcurl.so.4.* /usr/lib/libcurl.so.3
-    curl -L http://mirrors.edge.kernel.org/ubuntu/pool/main/libp/libpng/libpng12-0_1.2.54-1ubuntu1.1_$mtype.deb -o libpng12.deb
+    sudo cp usr/lib/x86_64-linux-gnu/libcurl.so.4.* /usr/lib/libcurl.so.3
+    curl -L http://mirrors.edge.kernel.org/ubuntu/pool/main/libp/libpng/libpng12-0_1.2.54-1ubuntu1.1_amd64.deb -o libpng12.deb
     sudo dpkg -i libpng12.deb
     cd ..
 }
@@ -472,6 +465,10 @@ if [[ ! $(ping -c1 google.com 2>/dev/null) ]]; then
     echo "[Error] Please check your Internet connection before proceeding"
     exit
 fi
+if [[ $(uname -m) != 'x86_64' ]]; then
+    echo "[Error] Only x86_64 distributions are supported. Use a 64-bit distro and try again"
+    exit
+fi
 
 HardwareModel=$(ideviceinfo -s | grep 'HardwareModel' | cut -c 16-)
 HardwareModelLower=$(echo $HardwareModel | tr '[:upper:]' '[:lower:]' | sed 's/.\{2\}$//')