Hi, I wanted to update my slim to 14719 so try to revert to stock, I read fw, load origin and hit write, the process was so slow, but it failed at read verification, now jf and xbox cant detect it, it goes to vendor mod, write but failed at read verification! Try dos flash 2.0 but same as jf, can write but no read, lock and reunlock it, same again! Its 03 MXIC, but they didnt use russian hack, they drill the ic, I myself do the russian hack but it didnt unlock!