My Brother MFC-L5750DW is refusing to print documents (worked fine this morning), and after restarting, checking for latest software and drivers (currently updating) I suspect it's time to remove and re-add the printer via SysPrefs.

Over the last few months I have carefully saved up numerous printing presets which AFAIK will all be lost when I remove the printer.

I don't want that - what steps can I do to keep these presets - is there a .pref file somewhere?

Anything else I should do first?

OS 10.15.4 Mac Mini (Late 2012) Printer Driver (and Firmware) updating as we speak (released yesterday)…


  • I recently migrated to Catalina and wanted to start clean so I had to find all my settings files manually - this was one of them.
    – Allan
    Apr 17 '20 at 10:51
  • Progress - lastest driver +Airprint - nothing. Latest version no Airprint, file printed. Now to re-import preferences…
    – Edd Turner
    Apr 17 '20 at 11:02
  • Prefs all gone :(
    – Edd Turner
    Apr 17 '20 at 11:03
  • :( Have to remake the prefs… even using Time Machine to bring them back didn't help
    – Edd Turner
    Apr 17 '20 at 11:25
  • How so? I copied my preferences from El Cap and they worked just fine. Can you elaborate?
    – Allan
    Apr 17 '20 at 11:27

Your custom presets are located in


Now, it is possible that it may have the printer name "embedded" in the filename. For instance I have an HP LaserJet that I name "HP Color LaserJet" so for me, my plist has the following name:


If you want to see what's in the settings file, just issue the command

defaults read com.apple.print.custompresets.forprinter.HP_Color_LaserJet.plist
  • Apparently, you renamed your "HP LaserJet" to "HP Color LasderJet"... ;-)
    – klanomath
    Apr 17 '20 at 11:04
  • @klanomath - Such fail! Lasders are more cost effective though.
    – Allan
    Apr 17 '20 at 11:17

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