Photoshop "portable" is a well known hack. It's pirated and illegal, end of story. This isn't the first time we've heard about it. Photoshop CC 14.2.1 Update - Adobe Community

I really need to install CS3 [CS3 IS DEAD] - Adobe Community

Adobe Photoshop CC 14.2.1 is a legacy version of the software, part of the initial Creative Cloud (CC) rollout that transitioned users from the older Creative Suite (CS) to the current subscription-based model. The Origins of CC 14.2.1

. While it introduced several key features and stability fixes, users should be aware that Adobe does not officially offer a "portable" version of this or any other Photoshop release. Overview of Version 14.2.1 Features

Adobe released version 14.2.1 in February 2014 primarily as a stability update to the major 14.2 "Creative Cloud" release.

A "portable" version of Photoshop is designed to run without a traditional installation.