I'm Helping you guys out, can you please do the same and subscribe my channel for the latest Tutorials :). In this tutorial im going to be showing how to Change Photoshop CS5 language to default (English) for Mac&Pc. Windows: C:\Program Files\Adobe\Adobe Photoshop CS5\Locales\(Language File)\Support Files . -Replace  "tw10428.dat" into "tw10428.bak" (bak = Backup). Mac: Aplications/Adobe Photoshop CS5/Locales/(Language File)/Support Files. -Replace  "tw10428.dat" into "tw10428.bak". Please show your support and SUBSCRIBE. Facebook:.