I have had this for a few years now and never could find out a clear answer on whether this was a boot or not. First red flag is the Raizing/8ing isn't screened near the Jamma connector. However the board is pretty much identical, with things that make it appear like a very early revision.
Here's a Korean version for comparison
You can see, on mine the two Actel chips are socketed, but on the Korean version they are soldered, but the socket outline is printed on the pcb.
Also the soldered Toshiba Z80 at the top on the Korean version, on mine it's a socketed Sharp instead.
It loads as Hong Kong region. But if you go into debug on any Batrider rom set, you can change region and HK is an option.
Here's a Korean version for comparison
You can see, on mine the two Actel chips are socketed, but on the Korean version they are soldered, but the socket outline is printed on the pcb.
Also the soldered Toshiba Z80 at the top on the Korean version, on mine it's a socketed Sharp instead.
It loads as Hong Kong region. But if you go into debug on any Batrider rom set, you can change region and HK is an option.