Hello to all Oppo lovers and owners! 
Searching in the net to find if an Oppo UDP-203 can playback an ISO file, I found this great news in the Australian Oppo official site!! Well, in fact are news for me and hope for you too. This page has the step-by-step procedure to make your Oppo play any DVD no matter what region it is!!! Just need a CDr, make it an image disc (ISO file to be downloaded) and insert it to your player. So it's an official and safety software mod. Oppo support in USA confirmed to me that it's a safe procedure!
Now I'm a happy Oppo UDP-203 owner playing my region 2 & 4 DVDs without a problem!
Here's the link if you're insterested:
https://www.oppodigital.com.au/pages/superdisc-unlock-your-oppo-bluray-player-for-all-dvd-regions
Cheers!

Searching in the net to find if an Oppo UDP-203 can playback an ISO file, I found this great news in the Australian Oppo official site!! Well, in fact are news for me and hope for you too. This page has the step-by-step procedure to make your Oppo play any DVD no matter what region it is!!! Just need a CDr, make it an image disc (ISO file to be downloaded) and insert it to your player. So it's an official and safety software mod. Oppo support in USA confirmed to me that it's a safe procedure!
Now I'm a happy Oppo UDP-203 owner playing my region 2 & 4 DVDs without a problem!

Here's the link if you're insterested:
https://www.oppodigital.com.au/pages/superdisc-unlock-your-oppo-bluray-player-for-all-dvd-regions
Cheers!