Here Sw From SAmsung all totaly free without any box...
1. Select com Port
2. Press Start
3. Press Power On Phone
4. Err.Bootloader.
5. Disconnect.
6. DL Bootloader.
7 Press Power on Phone
8 After Job Done Write full flash with boot
GT-S3650_UART_Downloader.rar
GT-S5230_UART_Downloader.rar