Acer A315-53G Service Manual page 102

In Windows OS, unzip the compressed Crisis utility package (i.e. in this case,
6.
"Crisis_Disk_v1.xx.zip"). Then copy the "C5V01x64.fd" file to the root directory of the USB
flash disk made in the preceeding steps.
NOTE:
Make sure the size of "C5V01x64.fd" is about 8.97MB, and that there is no other *.fd file in
the root directory of the USB flash disk.
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Figure 2-107. Unzip and Copy Crisis Package
Figure 2-108. Check File Size
System Utilities