I don't know if backup is okay because with Bios Update the PC has hung up and then has not started anymore, only black screen Acer Aspire M3920...
hey unlock that bios dell XPS 13 9310 Model P117G locked GDA30 LA-J143P REV:1.0(A00)
ENVISIQN H2216W-715G2698-2,TSUM58BWHL-LF, 128KB bios bin
Dell wyse D class,RHEA-6050A2524001-MB-A01-002,MX25L1605_2MB bios bin