Can't do a hard reset

[kcaegis45]

I just received the TP I purchased thru eBay. The seller said it is new and unused but I can't seem to do a hard reset .
When I press the vol down button(on the side) and the enter key (from keyboard) then the power button, I get a screen that says "SECURITY UNLOCKED" on top of the screen with the screen divided into 4 colors - red, green, blue and white.
In the red portion, it reads:
RAPH800
SPL-0.40.0000
MicroP-Herman (LED) v0C85
In the green portion it reads:
MicroP-Herman (KEY) v0685
PSOC-Paph STAGE_EVT v20
I even tried using the center button (navigation Control) instead of the keyboard enter key as the enter key but the TP just starts up.
Am I doing something wrong or the seller messed around with the TP?
If the seller did messed with it and unlocked it, how do I get it to hard reset? Thanks in advance for any help.