--- a/foo2zjs/hplj1000	2015-07-23 02:54:59.000000000 +0600
+++ a/foo2zjs/hplj1000	2020-03-26 12:42:38.000000000 +0700
@@ -43,7 +43,7 @@ 
 # Path to the USB CUPS backend. We use this backend to upload the firmware
 # into the printer when we are on a CUPS/libusb-based system.
 #
-USB_BACKEND=/usr/lib/cups/backend/usb
+USB_BACKEND=/usr/libexec/cups/backend/usb
 
 #
 # Directory to find downloadable HP firmware files sihpMMMM.dl