Update v0.2

What's new

• The bash script now automatically detects the IPSW version, build ID and device ID from the URL provided by the user.
• A confirmation from the user is asked to verify if what the automatic process submitted is correct. If not, user can rectify it.

What was changed

• The script now uses curl instead of wget
• Curl is used with the -s tag, meaning the process of downloading the required file is faster, and cleaner.
• Curl is native in most macOS machines, so no need to install it with brew like wget