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Dell latitude 7480 - Catalina

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Success upgrade to catalina 10.15


Work almost all: 

  • CPU scaling
  • Video with HDMI output 2560 x 1440
  • Sound speaker stereo
  • Headphones sound in jack
  • Mic (Siri also work)
  • Touchpad with some two fingers gesture 
  • Full level backlight
  • Wifi and bluetooth (wifi card replace with dw1560 - BCM94352Z)
  • Ethernet card
  • USB ports
  • Sleep
  • Touchscreen

Not working

  • fingerprint sensor (no kext support yet)
  • cardreader (no kext support yet)
  • NFC (no kext support yet)


  • Slow wakeup from sleep mode (about 30-40 sec), and no reason why.  Kaspersky for mac!


Don't forget after install or upgrade to Catalina 10.15 to copy files from Copy2LE folder to /L/E  and change permission / rebuild cache

 sudo cp -r Copy2LE/* /L*/E*/

 sudo chmod -Rf 755 /L*/E*

 sudo chown -Rf 0:0 /L*/E*

 sudo kextcache -i /



And of course don't forget completely turn off hibernate for a quick wakeup after lid open. 

sudo pmset hibernatemode 0

sudo rm -f /var/vm/sleepimage

sudo pmset hibernatefile /dev/null


History release


  • Fix for bluetooth


  • Watevergreen kext update to version 1.3.3


  • Many kext updated to latest
  • Some kext moving to LE
  • Clover update to latest version 5097
  • Fully fix for some KP while boot (VoodooGPIO reason). 






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You can try Headkaze's updated version for Catalina or Mieze 






Just need BrcmBluetoothInjector.kext, BrcmFirmwareRepo.kext and BrcmPatchRAM2.kext in /L/E

Repair permissions and rebuild cache as always.

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@Jake Lo i have two question:

1. when notebook wakeup from sleep (just open lid) screen and action are freezing or hang for some time (about 20-30 sec) and screen may by black, or mouse freezing, or no login window, etc. After 20-30 sec all working normal. 

2. from time to time when i power off notebook, and power on - got KP (VoodooGPIO kext). It seems to me that this happens when the power is different when turned off and on, for example, turned off when powered by the AC, and turned on when powered by the battery and backward. 

Do you have any idea what i can read 'bout it?  

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Did you meet problem that Bluetooth headphone stutters? I'm using DW1560. Wifi is good but bluetooth isn't. My headphone is Sony Extrabass MDR-XB950N1

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I tried this and also execute chmod and chown then rebuild cache but Bluetooth even doesn't work.

Update: After follow guide on the github repository, Bluetooth worked again. Stutter still there but better.

Thank you!

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