Support flashing using fpt.efi without fparts.txt

Author: jackpot51

res/firmware.nsh

@@ -73,8 +73,13 @@ if "%2" == "bios" then
 
         # Flash with FPT and exit if possible
         if exist fpt.efi then
-            fpt.efi -P "%1\fparts.txt" -F "%1\firmware.rom"
-            exit %lasterror%
+            if exist fparts.txt then
+                fpt.efi -P "%1\fparts.txt" -F "%1\firmware.rom"
+                exit %lasterror%
+            else
+                fpt.efi -F "%1\firmware.rom"
+                exit %lasterror%
+            endif
         endif
 
         # Flash with efiflash and exit if possible