Back in November 2015 and I haven't done any firmware upgrades since then. I guess upgrading would solve the issue?When did you get your multi ? The CP2multi version of Punisher works great on my multi btw thanks guys for your workI downloaded both version of The Punisher available here, and none seem to work on my multi. I get "Operation Failed" on the LCD screen whenever I try to boot the game. Do I need to update the firmware?
You shouldn't need to upgrade. I've got an old firmware and it works fine.
The files you're using should look like this, otherwise you might have have the version that works on standard CPS2 roms, rather than the multi