Hi to all,
thanks to another forum(4pda) finally is possible to trasform SPH-DA120 USA version to EUR with european frequency
GUIDE:
download file to attached link
1) copy on blank USB (FAT32 - 2GB or 4GB or 8GB), folder [sYSUPDATE] e file [PEQxxx.hex] e [testmode_a.key]
2) Insert USB on USB1 or USB2 port(i used USB2 without problems);
3) Turn on the Radio and automatically go In TestMode;
4) click 2. Write Programs Forcibly;
5) click 9. System uCom Write;
6) Chose USB 1 or USB 2 and click Home button to strart programming;
7) Wait 100% and System Restart automatically;
8 ) After return in test mode you can turn off Radio;
9) Remove USB and GO with European version with EU frequency on USA Radio;
Great!!!!!