Hello..I can already finish it.I tried to use TFTP again, and the "bootvar" was replaced, and in version 3.0.0.91 the Web GUI is accessible. thankyou![IMAGE]
Hi all, I Tried to update firmware to 3.0.1.9 using the admin GUI, its work. But it failed and haven't been able to GUI access. Does anyone know how to downgrade? 
Dell X1018 - Can't access GUI after tried to update firmware to 3.0.1.9