Phone bricked, can't find Stock ROM, someone help!

Hello. My Samsung Galaxy J500M got bricked last night and I want to flash it with the stock ROM.

But I CAN'T FIND THE ROM FOR THE US!!

Seriously, I don't know where I can find a US stock rom. I've looked up the samsung updates site but its not there. :(

I don't know my baseband number because I can't get into the phone. Someone please help! D:


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