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Here is, use the attached only for MacBookAir4,1 and apply following this method: https://forums.macrumors.com/threads/macos-10-15-catalina-on-unsupported-macs.2183772/post-27887552

Thank you, it is working for me on the MBA 4,1. Airdrop works bi-directional. Next stop will be the continuity.

Screen Shot 2019-10-19 at 8.55.34 AM.png
 
Thanks a lot ! It Works !

Great job !
I've a last question . How to update Catalina version .
I used patcher 1.1.9 but stil in 10.15 ?
Thanks a lot for all .

I don't follow so much the Catalina updates (I am still on beta 11 even on a supported Mac), but those minor updates are not easy to install, I'd advise to wait for the out-of-beta 10.15.1 , @ASentientBot mainly is testing his wrappers (non-metal patches) on current .1 beta 2 release and they are still solid.
 
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The attached will work only on MacBookAir4,2.
Reporting... AirDrop works well with iOS 13 device.
But
Handoff - NO
Instant Hotspot - YES
Phone calls - not tested
Import from iPhone - NO

Used this command also
sudo /usr/libexec/PlistBuddy -c "Set:Mac-742912EFDBEE19B3:ContinuitySupport true" "/System/Library/Frameworks/IOBluetooth.framework/Versions/A/Resources/SystemParameters.plist"

Is this fixable? Maybe need to do this terminal commands like in Mojave?

sudo -E perl -pi -e "s/\Mac-00BE6ED71E35EB86/\Mac-742912EFDBEE19B3/" /System/Library/Extensions/IO80211Family.kext/Contents/PlugIns/AirPortBrcm4360.kext/Contents/MacOS/AirPortBrcm4360

sudo -E perl -pi -e "s/\Mac-00BE6ED71E35EB86/\Mac-742912EFDBEE19B3/" /System/Library/Extensions/IO80211Family.kext/Contents/PlugIns/AirPortBrcmNIC.kext/Contents/MacOS/AirPortBrcmNIC
 
Reporting... AirDrop works well with iOS 13 device.
But
Handoff - NO
Instant Hotspot - YES
Phone calls - not tested
Import from iPhone - NO

Used this command also
sudo /usr/libexec/PlistBuddy -c "Set:Mac-742912EFDBEE19B3:ContinuitySupport true" "/System/Library/Frameworks/IOBluetooth.framework/Versions/A/Resources/SystemParameters.plist"

Is this fixable? Maybe need to do this terminal commands like in Mojave?

sudo -E perl -pi -e "s/\Mac-00BE6ED71E35EB86/\Mac-742912EFDBEE19B3/" /System/Library/Extensions/IO80211Family.kext/Contents/PlugIns/AirPortBrcm4360.kext/Contents/MacOS/AirPortBrcm4360

sudo -E perl -pi -e "s/\Mac-00BE6ED71E35EB86/\Mac-742912EFDBEE19B3/" /System/Library/Extensions/IO80211Family.kext/Contents/PlugIns/AirPortBrcmNIC.kext/Contents/MacOS/AirPortBrcmNIC

I can't test continuity, but for handoff AFAIK you need both the devices (the unsupported Mac and the iOS device) logged, signed and synced into the same iCloud account.

However it may need an additional patch on the IOBluetoothFamily.kext

Also check it from "System Preferences - General" : https://support.apple.com/guide/mac-help/mchl732d3c0a/mac
 
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Hello, thanks for sharing your work. Does this method will work on my MacBook Pro 5,4 (Mid2009) with a BT 4.0 dongle??? Thanks in advance for your answer.

Before using any of AirDrop fixes (the Bluetooth 4.0 is secondary) you should type the output of these Terminal commands:

ioreg -l | grep "board-id" | awk '{print $4}'

ioreg -r -n ARPT | grep IOName

system_profiler -detailLevel mini | grep "Card Type"
 
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Hi,
I just prepared a stick with installer 15.0.33 using Patcher v1.1.9 to install the supplemental update...
However, I get this notification when starting the installation:
“The file ‚Preboot‘ is on root-level of ‚Macintosh HD‘. If you go on with the installation, this file gets deleted“. See screenshot.

Is this normal/safe?
 

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While Catalina Patcher 1.1.9 can't produce a usable usb installer, installing from the 10.15.1 beta 2 full installer (15.1.2) onto an usb drive using a supported machine then moving this usb drive to apply the missing patches from a patched usb installer of 15.0.33 worked. The resulting 10.15.1 beta 2 volume runs fine on a MacPro 3,1 with GTX680 so the reports of removal of required SATA support are rubbish.
 
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My SSE 4.2 emulator (MouSSE), which enables the Mac Pro 3,1 to run the AMD Metal drivers, is finally going public. See this post for details.

@dosdude1 , @0403979 - if you find it useful, feel free to incorporate MouSSE into your patchers. It currently lacks an installer, so adding it could be a win-win for each of us.

Tags for other probably-interested parties: @nick2632 @EmilHolub @Ludacrisvp @joevt @Prophet96ix @msekeris @Larsvonhier @StormLord
Awesome, nice job with this! It will definitely be added to Catalina Patcher.
 
Reporting... AirDrop works well with iOS 13 device.
But
Handoff - NO
Instant Hotspot - YES
Phone calls - not tested
Import from iPhone - NO

Used this command also
sudo /usr/libexec/PlistBuddy -c "Set:Mac-742912EFDBEE19B3:ContinuitySupport true" "/System/Library/Frameworks/IOBluetooth.framework/Versions/A/Resources/SystemParameters.plist"

Is this fixable? Maybe need to do this terminal commands like in Mojave?

sudo -E perl -pi -e "s/\Mac-00BE6ED71E35EB86/\Mac-742912EFDBEE19B3/" /System/Library/Extensions/IO80211Family.kext/Contents/PlugIns/AirPortBrcm4360.kext/Contents/MacOS/AirPortBrcm4360

sudo -E perl -pi -e "s/\Mac-00BE6ED71E35EB86/\Mac-742912EFDBEE19B3/" /System/Library/Extensions/IO80211Family.kext/Contents/PlugIns/AirPortBrcmNIC.kext/Contents/MacOS/AirPortBrcmNIC
after you ran those commands did you do these before the restart:

sudo touch /Library/Extensions

sudo kextcache -I /

did you also make sure SIP was disabled?

that's how I fixed my Mac Pro. and everything works now. handoff, import from iPhone Instant Hotspot airdrop and unlock with Apple Watch
 
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