delete mameui/nvram
press p (pause) and tab key
select cheat - unlock all time-released options on
cheat.zip file on mameui root folder
first power on message , be successful
tekken tag not f2 (service mode) , select tab / dip switches , change service mode on
coin options / start cost 1 coin to start
and p1 start button (default 1)
exit & save / press p1 start button