If you are in 10.14.0 you will not longer able to download legit copy of macOS from Apple store. It's download and install as system update.   Here is script to generate >5GB installer and also create bootable USB media. I'm sharing code of script and if you wanna get executable download from attachment.   If you can more optimise the code you are welcomed.   You also can also download macOS 10.15 when it will be available.   after downloading attachment in terminal type: chmod a+x /path/to/downloaded/file   #!/bin/bash # This program is free software. It comes without any warranty, to # the extent permitted by applicable law. You can redistribute it # and/or modify it under the terms of the Do What The {censored} You Want # To Public License, Version 2, as published by Sam Hocevar. See # http://www.wtfpl.net/ for more details. */ # One more contribution to open source world. # Note: try to reduce lines and add more features # you will be add in contribute area. # Global functions print() { printf -- "$1\n"; } log() { printf -- "\033[37m LOG: $1 \033[0m\n"; } success() { printf -- "\033[32m SUCCESS: $1 \033[0m\n"; } warning() { printf -- "\033[33m WARNING: $1 \033[0m\n"; } error() { printf -- "\033[31m ERROR: $1 \033[0m\n"; } heading() { printf -- " \033[1;30;42m $1 \033[0m\n\n"; } newUiPage() { clear echo "---------------------------------------------------" echo "- macOS Legit Copy Downloader v1.0.1 -" echo "- By Hanger1 (H1) -" echo "---------------------------------------------------" echo " Contributor: ricoc90" echo " " echo " " } # Global Variables DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )" tmpDir="$DIR" srcDir="$DIR/macOSsrc" # Prgram functions downloadAndParseCatalog(){ # Download catalog file from apple server #------------------------------- print "\nLoading macOS catalog from swscan.apple.com..." if ! curl --fail -s -f -o "$tmpDir/catalog.gz" "$1"; then error "Failed to download catalog" && exit; fi gunzip -k "$tmpDir/catalog.gz" rm "$tmpDir/catalog.gz" # Parse catalog file into arrays #------------------------------- versionsArray=($(getListOfVersions)) appleDiagnosticsArray=($(findLinkInCatalog AppleDiagnostics.dmg "$tmpDir/catalog")) appleDiagnosticsChunklistArray=($(findLinkInCatalog AppleDiagnostics.chunklist "$tmpDir/catalog")) baseSystemArray=($(findLinkInCatalog BaseSystem.dmg "$tmpDir/catalog")) baseSystemChunklistArray=($(findLinkInCatalog BaseSystem.chunklist "$tmpDir/catalog")) installInfoArray=($(findLinkInCatalog InstallInfo.plist "$tmpDir/catalog")) installESDArray=($(findLinkInCatalog InstallESDDmg.pkg "$tmpDir/catalog")) rm "$tmpDir/catalog" } findLinkInCatalog(){ array=($(awk '/'$1'</{print $1}' "$2")) let index=0 for element in "${array[@]}"; do array[$index]="${element:8:${#element}-17}" let index=index+1 done echo ${array[@]} } getListOfVersions(){ versionInfoArray=($(findLinkInCatalog InstallInfo.plist "$tmpDir/catalog")) let index=0 for element in "${versionInfoArray[@]}"; do infoline=$(curl -s -f $element | tail -5) versionInfo[$index]="$(echo $infoline | awk -v FS="(string>|</string)" '{print $2}')" let index++ done echo ${versionInfo[@]} } checkOSAvaibility() { if curl --output /dev/null --silent --head --fail "https://swscan.apple.com/content/catalogs/others/index-$1seed-10.14-10.13-10.12-10.11-10.10-10.9-mountainlion-lion-snowleopard-leopard.merged-1.sucatalog.gz"; then echo "$1"; else echo "10.14"; fi } downloadOS(){ # Print User Interface newUiPage LATEST_VERSION=$(checkOSAvaibility "10.15") # User input for selecting release type PS3=""$'\n(You can also able to download macOS 10.15 when it will available)\n\n'"Which release you want? " select RELEASETYPE in "Developer Release" "Beta Release" "Public Release"; do case $RELEASETYPE in Developer* ) CATALOGTYPE="-${LATEST_VERSION}seed"; break;; Beta* ) CATALOGTYPE="-${LATEST_VERSION}beta"; break;; Public* ) break;; esac done downloadAndParseCatalog "https://swscan.apple.com/content/catalogs/others/index${CATALOGTYPE}-10.14-10.13-10.12-10.11-10.10-10.9-mountainlion-lion-snowleopard-leopard.merged-1.sucatalog.gz" newUiPage # User input for selecting macOS versions PS3=""$'\n'"Select macOS version : " select MACVERSION in "${versionsArray[@]}"; do if [[ $REPLY -le ${#versionsArray[@]} && $REPLY -gt 0 ]] then # Dont break sequence (It's sequenced with $fileNames[@]) links=(${appleDiagnosticsArray[$[$REPLY - 1]]} ${appleDiagnosticsChunklistArray[$[$REPLY - 1]]} ${baseSystemArray[$[$REPLY - 1]]} ${baseSystemChunklistArray[$[$REPLY - 1]]} ${installInfoArray[$[$REPLY - 1]]} ${installESDArray[$[$REPLY - 1]]}) fileNames=("AppleDiagnostics.dmg" "AppleDiagnostics.chunklist" "BaseSystem.dmg" "BaseSystem.chunklist" "InstallInfo.plist" "InstallESDDmg.pkg") # Ask user to download macOS or only print links while true; do read -p ""$'\n'"You wanna download macOS ? [y/n] " yn print "" if [[ $yn == y ]]; then # make source directory if [ ! -d "$srcDir" ]; then mkdir "$srcDir"; fi # Download files into $srcDir from $links[@] for i in {0..5}; do curl -f -o "$srcDir/${fileNames[$i]}" "${links[$i]}" done && break; elif [[ $yn == n ]]; then for link in "${links[@]}"; do print $link; done && break; #&& exit; fi done break else error "Invalid choice." fi done } createinstallmedia(){ #--------------------------------------------------------------------------- # Create Install Media #--------------------------------------------------------------------------- # Taking ownership of downloaded files #------------------------------------------------- chmod a+x "$srcDir/BaseSystem.dmg" chmod a+x "$srcDir/BaseSystem.chunklist" chmod a+x "$srcDir/InstallInfo.plist" chmod a+x "$srcDir/InstallESDDmg.pkg" chmod a+x "$srcDir/AppleDiagnostics.dmg" chmod a+x "$srcDir/AppleDiagnostics.chunklist" # Mount 'BaseSystem.dmg' #------------------------- $(hdiutil attach "$srcDir/BaseSystem.dmg" 2>&1 >/dev/null) print "\n\nMake sure \"macOS Base System\" volume is mounted\n" read -p "Press enter to continue..." # Pull 'Install macOS XXXX.app' from 'BaseSystem.dmg' #----------------------------------------------------- FOLDERS=(/Volumes/*) for folder in "${FOLDERS[@]}"; do [[ -d "$folder" && "$folder" =~ "macOS Base System" ]] && basePath="$folder" done for file in "$basePath/"*; do # Find XXXX.app in mounted volume if [[ $file == *.app ]]; then let index=${#name_array[@]} name_array[$index]="${file##*/}" fi done installAppName=${name_array[0]} newUiPage print "Copying $installAppName to out folder..." cp -R "/Volumes/macOS Base System/$installAppName" "$DIR/" # UnMount 'BaseSystem.dmg' #------------------------- $(hdiutil detach /Volumes/macOS\ Base\ System 2>&1 >/dev/null) print "Copying Files to SharedSupport folder...\n" # Create SharedSupport folder inside 'Install macOS XXXX.app/Contents' #---------------------------------------------------------------------- SharedSupportDir="$DIR/${installAppName}/Contents/SharedSupport" if [ ! -d "$SharedSupportDir" ]; then mkdir "$SharedSupportDir"; fi # Copy All contents of src folder to 'Install macOS XXXX.app/Contents/SharedSupport' #---------------------------------------------------------------------- # cp -R $srcDir/* $DIR/Install\ macOS\ Mojave\ Beta.app/Contents/SharedSupport cp -R "$srcDir/BaseSystem.dmg" "$SharedSupportDir" cp -R "$srcDir/BaseSystem.chunklist" "$SharedSupportDir" cp -R "$srcDir/InstallInfo.plist" "$SharedSupportDir" cp -R "$srcDir/AppleDiagnostics.dmg" "$SharedSupportDir" cp -R "$srcDir/AppleDiagnostics.chunklist" "$SharedSupportDir" # This file will be copied with InstallESD.dmg name cp -R "$srcDir/InstallESDDmg.pkg" "$SharedSupportDir/InstallESD.dmg" # Replace <string>InstallESDDmg.pkg</string> to <string>InstallESD.dmg</string> in 'src/InstallInfo.plist' #---------------------------------------------------------------------------------------------------------- sed -i "" 's/<string>InstallESDDmg.pkg<\/string>/<string>InstallESD.dmg<\/string>/g' "$SharedSupportDir/InstallInfo.plist" # Remove these lines from 'src/InstallInfo.plist' #------------------------------------------------ # <key>chunklistURL</key> # <string>InstallESDDmg.chunklist</string> # <key>chunklistid</key> # <string>com.apple.chunklist.InstallESDDmg</string> sed -i "" '30,33d' "$SharedSupportDir/InstallInfo.plist" # Replace <string>com.apple.pkg.InstallESDDmg</string> to <string>com.apple.dmg.InstallESD</string> in 'src/InstallInfo.plist' #---------------------------------------------------------------------------------------------------------- sed -i "" 's/<string>com.apple.pkg.InstallESDDmg<\/string>/<string>com.apple.dmg.InstallESD<\/string>/g' "$SharedSupportDir/InstallInfo.plist" # Replace InstallESDDmg.pkg to InstallESD.dmg in 'src/InstallInfo.plist' #---------------------------------------------------------------------------------------------------------- sed -i "" 's/InstallESDDmg.pkg/InstallESD.dmg/g' "$SharedSupportDir/InstallInfo.plist" # newUiPage DEVICES=($(ls /Volumes)) read -p 'Enter name of USB media : ' INSTALLER_DEVICE # Creates a bootable installer for macOS on selected media # As discribed in https://support.apple.com/en-us/HT201372 print "" sudo "$DIR/$installAppName/Contents/Resources/createinstallmedia" --volume /Volumes/$INSTALLER_DEVICE read -p 'You wanna delete downloaded files ? (y/n) : ' ANSWER if [ $ANSWER == y ]; then rm -R "$srcDir"; fi } newUiPage # User input for selecting release type PS3=""$'\n'"What you want to do? " select RELEASETYPE in "Download macOS" "Make bootable Media"; do case $RELEASETYPE in Download* ) downloadOS; break;; Make* ) createinstallmedia; break;; esac done exit     Attachment :  manOSDownloader_rc