How do I enable or disable the splash screen progress bar?

I tried the enable script. Nothing changed. There was no loading or boot progress bar or any other indication that the machine was booting until the actual presentation started.

These scripts are confusing. BOTH scripts have text saying "Disabled Boot/Splash Screen."

Here's a "diff" between the two files. "Left side" (indicated by "<!") is the autorun from the enable zip file. Right side (using "!>") is the disable one.

.\enable-autorun.brs : .\disable-autorun.brs -- includes identical,left-only,right-only,moved-left,moved-right lines
    REM Start of script
 <! EnableZoneSupport(1)
    REM Create text widget to display onscreen messaging
    mode=CreateObject("roVideoMode")
    registry = createobject("roRegistry")
    
    rect1 = CreateObject("roRectangle", mode.GetSafeWidth()/4, mode.GetSafeHeight()/2, 500, 40)
    rect2 = CreateObject("roRectangle", mode.GetSafeWidth()/4, mode.GetSafeHeight()/2+42, 500, 40)
 <! text1 = CreateObject("roTextWidget", rect1, 1, 1, { TextMode: 2, Alignment: 2 })
 <! text2 = CreateObject("roTextWidget", rect2, 2, 1, { TextMode: 2, Alignment: 2 })
 !> text1 = CreateObject("roTextWidget", rect1, 1, 1, 0)
 !> text2 = CreateObject("roTextWidget", rect2, 2, 1, 0)
    print type(rect)
    print type(text)
    text1.Show()
    
 <! text1.PushString("Boot Screen Disable")
 !> text1.PushString("Boot Screen Enable/Disable")
    sleep(5000)    
    
    registrySection = CreateObject("roRegistrySection", "boot")
    if type(registrySection) = "roRegistrySection" then 
    ' write web server enable
 <! registrySection.Write("splash", "1")
 !> registrySection.Write("splash", "0")
    endif
    registry.Flush()
    text2.PushString("Disabled Boot/Splash Screen.")
    
    sleep(10000)
    REM End of script
    
 !> loop:
 !> sleep(1000)
 !> goto loop
    
 <! text2.PushString("Complete. Rebooting, and copying autorun.")
 <! sleep(5000)
 <! DeleteFile("autorun.brs")
 <! RebootSystem()