Page 1 of Region Hack for PRISM TF-DVD7100 (PDT-7) Portable DVD Player

I found that this hack works for the Prism TF-DVD7100 Portable DVD Player. I found it on a US website where the brand was actually called COBY rather than PRISM.

With no disc in player:

On the remote control:
[*]Press Setup
[*]Press FF
[*]Press FR
[*]Press Next-Chapter
[*]Press Prev-Chapter
Should now display a code above the language selection
[*]Press the RIGHT arrow until the end figure is 255
[*]Press ENTER
[*]Press Setup to finish

It seems you only need to do it once as well!