Tools dan program :
1. Kabel data samsung champ (Mini usb) atau pakai kabel CA-101
2. program A FlashTool EM_XMM2150 , Kalau belum punya bisa download.
3. Firmware SAMSUNG CHAMP DUOS GT – C3312
4. Driver SAMSUNG CHAMP DUOS GT – C3312

Cara Flashing :

1. Backup data
    Menu -> Settings -> Backup Manager -> Pilih Backup yang Anda inginkan.
2. Extract program Flasher [FlashTool_E2.exe] yang sudah di download tadi
3. Extract semua file firmware.
4. Buka atau Jalankan program Flasher [FlashTool_E2.exe]
 - Setting Default :
 - Custom Order : Centang
 - Erases Calibration! : Erase whole flash before download
 - Baud Rate: 921600
 - Communication Driver: Infineon USB Driver.
5. Pilih add > masukan semua file firmware
6. Urutkan sesuai urutan berikut :
- C3312xxxxx_psi.fls
- C3312xxxxx_slb.fls
- C3312xxxxx_BSY.fls
- C3312xxxxx_CDS.fls
- C3312Oxxxx_CSC.dffs

7. Klik Next
8. Hubungkan HP ke PC dalam keadaan Boot Mode (baca petunjuk di bawah)
9. Klik Start USBx
10. Tunggu hingga Proses Flash selesai.

Cara Masuk Boot Mode : 
- Matikan HP (cabut lalu pasang batre)
- Tekan bersamaan tombol “Volume Bawah” Dan “Power”
- Anda melihat Gambar handphone dengan Panah Menghadap ke bawah.

DOWNLOAD :
Samsung Flash Driver
Flash Tool
Firmware (EN)
Firmware (ID)

Use DiskPart Open a command prompt window for the windows version you are using

• In the command prompt type diskpart
• Type list volume to identify the thumb drives volume #.
• Type select volume # where # is your thumb drives # and press enter.
• Type attributes disk clear readonly press enter. You should get text back saying Disk attributes cleared successfully

Remove the flash drive, then reinsert into USB.
Check the drive in question, you should now be able to access the disk with full permissions.