Jamf PRO Extension Attribute/boolean exit script to ascertain whether Mac is compatible with a Big Sur installer

README.md

macOS Big Sur Installer no longer relies on Board IDs/Model IDs to judge compatibility, appears instead to use Board ID for older hardware and the new model codes (which have been around since T2 time IIRC) for M1s

To get the list of boardids/model codes:

1. hdiutil mount -nobrowse -noverify /path/to/Install macOS Big Sur.app/Contents/SharedSupport/SharedSupport.dmg
2. python2: cat /Volumes/Shared\ Support/com_apple_MobileAsset_MacSoftwareUpdate/com_apple_MobileAsset_MacSoftwareUpdate.xml | python -c "import sys; import plistlib; p=plistlib.readPlist(sys.stdin); print ' | '.join(p['Assets'][0]['SupportedDeviceModels']) + ' )'"
3. python3: cat /Volumes/Shared\ Support/com_apple_MobileAsset_MacSoftwareUpdate/com_apple_MobileAsset_MacSoftwareUpdate.xml | python3 -c "import sys; import plistlib; p=plistlib.loads(sys.stdin.buffer.read()); print(' | '.join(p['Assets'][0]['SupportedDeviceModels']) + ' )')"
4. copy and paste into script case statement

macOS_11_compatibility.sh

#!/bin/bash

# Check if Mac board/model id is supported by by Big Sur (in this case 11.3 Beta (20E5229a))

# To obtain this information mount the Big Sur installer along with Shared Support. 
# cat /Volumes/Shared\ Support/com_apple_MobileAsset_MacSoftwareUpdate/com_apple_MobileAsset_MacSoftwareUpdate.xml
# And see under "SupportedDeviceModels"

BOARDID="$(ioreg -p IODeviceTree -r -n / -d 1 | awk -F "\"" ' /board-id/ {print $4}')"

if [ -z "$BOARDID" ]; then
	# We've probably got an M1 Mac
	BOARDID="$(ioreg -f -d 2 | awk '/IOPlatformExpertDevice/ { print $2 }')"
fi

case $BOARDID in
    J132AP | J137AP | J140AAP | J140KAP | J152FAP | J160AP | J174AP | J185AP | J185FAP | J213AP | J214AP | J214KAP | J215AP | J223AP | J230AP | J230KAP | J680AP | J780AP | X589AMLUAP | X589ICLYAP | X86LEGACYAP | J274AP | J293AP | J313AP | Mac-06F11F11946D27C5 | Mac-06F11FD93F0323C5 | Mac-0CFF9C7C2B63DF8D | Mac-112818653D3AABFC | Mac-112B0A653D3AAB9C | Mac-189A3D4F975D5FFC | Mac-1E7E29AD0135F9BC | Mac-226CB3C6A851A671 | Mac-27AD2F918AE68F61 | Mac-2BD1B31983FE1663 | Mac-35C1E88140C3E6CF | Mac-35C5E08120C7EEAF | Mac-36B6B6DA9CFCD881 | Mac-3CBD00234E554E41 | Mac-42FD25EABCABB274 | Mac-473D31EABEB93F9B | Mac-4B682C642B45593E | Mac-50619A408DB004DA | Mac-53FDB3D8DB8CA971 | Mac-551B86E5744E2388 | Mac-5A49A77366F81C72 | Mac-5F9802EFE386AA28 | Mac-63001698E7A34814 | Mac-65CE76090165799A | Mac-66E35819EE2D0D05 | Mac-747B1AEFF11738BE | Mac-77F17D7DA9285301 | Mac-7BA5B2D9E42DDD94 | Mac-7BA5B2DFE22DDD8C | Mac-7DF21CB3ED6977E5 | Mac-81E3E92DD6088272 | Mac-827FAC58A8FDFA22 | Mac-827FB448E656EC26 | Mac-90BE64C3CB5A9AEB | Mac-937A206F2EE63C01 | Mac-937CB26E2E02BB01 | Mac-9394BDF4BF862EE7 | Mac-9AE82516C7C6B903 | Mac-9F18E312C5C2BF0B | Mac-A369DDC4E67F1C45 | Mac-A5C67F76ED83108C | Mac-A61BADE1FDAD7B05 | Mac-AA95B1DDAB278B95 | Mac-AF89B6D9451A490B | Mac-B4831CEBD52A0C4C | Mac-B809C3757DA9BB8D | Mac-BE088AF8C5EB4FA2 | Mac-BE0E8AC46FE800CC | Mac-C6F71043CEAA02A6 | Mac-CAD6701F7CEA0921 | Mac-CF21D135A7D34AA6 | Mac-CFF7D910A743CAAF | Mac-DB15BD556843C820 | Mac-E1008331FDC96864 | Mac-E43C1C25D4880AD6 | Mac-E7203C0F68AA0004 | Mac-EE2EBD4B90B839A8 | Mac-F305150B0C7DEEEF | Mac-F60DEB81FF30ACF6 | Mac-FA842E06C61E91C5 | Mac-FFE5EF870D7BA81A | VMM-x86_64 )
        echo "<result>Passed: Hardware compatible</result>"
        exit 0
        ;;

    *)
        echo "<result>Failed: Hardware incompatible</result>"
        exit 1
esac