@EyeKey hi, you did an awesome job with your stuff ;) thank you, i've tried nandchecker and i've got this :
Microsoft Windows [version 10.0.14393]
(c) 2016 Microsoft Corporation. Tous droits réservés.
C:\Users\teacher>CD..
C:\Users>CD..
C:\>J:
J:\>nandBinCheck.exe slc.full2.img -all
**...