1-Run Samsung S8000 Jet Downloader.
2-Check LSI6410 option.
3-In case you want to flash Boot files to your phone check Full Download option.
4-Click Boot button and show the program the Boot files folder.
5-Click Amss button and select this file: amss.bin
6-Check Apps button and select this file: apps_compressed.bin
7-Click Rsrc1 button and select this file: Rsrc_S8000_Open_Europe_Common.rc1
8-Click Rsrc2 button and select this file: Rsrc2_S8000(Low).rc2
9-Click Factory FS button and select this file: FactoryFs_S8000_Open_Europe_Common.ffs
10-Put the phone into download mode: Press Volume Down key + Camera key + Power
11-Connect USB cable to phone and click Port Search button.
12-When the program detect the Com number that the phone takes click Download button to start the process.
13-Do not touch the phone or cable till all is done and the phone restart.
14-After reboot the phone you can do full reset by this Code: *2767*3855#.