If Samfirmware, AndroidFirmwares.net or Samsung-Updates.com don't have what you want, you're SOOL.
You won't find it anywhere else, the chances of someone reading this who coincidentally has a copy handy these days is zero given how few people read/post here - there's a fair chance you'll be sitting there in a month & probably won't even get another reply to this thread (and the reason for that is as above; those 3 places are the only places you're going to source a 3 yr old firmware for a 3yr old phone).
Besides, why do you think need that particular firmware ? I'm not seeing why you can't use any other firmware for your country/carrier. If I were in your situation, I'd be investigating that one, otherwise you probably won't be fixing it.