Download of MacBook Pro Retina EFI Update 1.3 for Mac was on the developer's website when we last checked. We cannot confirm if there is a free download of this app available. We recommend checking the downloaded files with any free antivirus. The program lies within System Tools, more precisely General.
From the developer:
This MacBook Pro Retina EFI Update update is recommended for MacBook Pro (Retina, 13-inch, late 2013) models. This update addresses an issue where the built-in keyboard and Multi-Touch trackpad may become unresponsive.
You may want to check out more software for Mac, such as MacBook Pro SMC Firmware Update, which might be similar to MacBook Pro Retina EFI Update.
System Optimization
Device Assistants