Hello, I’m Nathan, and I’ll be assisting you today. My livelihood depends on your positive feedback, so your satisfaction is my highest priority.
Sorry to hear you’re having trouble.
Honestly, there isn't anything you can do in this case. The problem here is that the player is designed for and locked to a specific region while you're attempting to play a disc from another region. These region codes were set up by the movie studios to help prevent piracy, and there is no easy way around them. The reason you are finding no hack/code for your model is because one simply does not exist, and it is not possible to modify the capabilities of this unit.
This region coding protocol is physically built into the hardware (chips on the control board) of the player, and changing it would require physical modifications to the player (swapping out chips) that would void the warranty and often permanently damage the player. Multiregion functionality is virtually never in a basic/portable model player like this, a proper region free unit would cost 3 time as much, for obvious reasons of requiring additional hardware and software.
Your best options are to re-purchase the discs you want to play in your country with the proper region code, or buy a purpose made region-free player that does not have this hardware restriction.
I'm sorry there isn't a better answer here, it's simply a design limitation of the player. Even if you were told it was available, the seller was either dishonest or misinformed.
Best regards, ***** ***** for the news,