No service - changed bands

Aug 21, 2013
Hi, I have XiaoMi Mi2S and I just screwed up. In the service menu *#*#INFO#*#* I accidentally changed to the USA Band, Im in Europe. Since then I have absolutely no signal for any network. There isnt any other working option besides USA Band, no automatic, no EURO, just some nonworking nonsense........
Tried reset to factory, wiped cache, flashed new rom, flashed new kernel, flashed new baseband, flashed stock, NOTHING WORKS!
Can you please help me? What can I do?