Grant the notification permission to an iOS app. More permissions here: https://gist.github.com/kasnder/3eb32449512a4dba4a92949c8d337a92 Raw

1_grant_ios_notification_permission.sh

# This script runs on macOS
# One needs a working, passwordless SSH login with login 'ios' on a jailbroken iOS 14.+
# One also needs Activator and ActivatorCrashFix14: https://stackoverflow.com/questions/21706050/how-to-unlock-ios-screen-programmatically)

# Backup and preparation
ssh ios "cp -n /var/mobile/Library/BulletinBoard/VersionedSectionInfo.plist ~/VersionedSectionInfo.plist.bak"
scp ios:/var/mobile/Library/BulletinBoard/VersionedSectionInfo.plist ./VersionedSectionInfo2.plist

# Prepare notification settings
/usr/libexec/PlistBuddy -c "Set :\$objects:2 $appId" `pwd`/base2.plist
plutil -convert binary1 base2.plist # PlistBuddy unfortunately converts its output to XML plists, so need to convert back

# Add new notification setting to other settings
defaults write `pwd`/VersionedSectionInfo2.plist sectionInfo -dict-add $appId -data "`cat base2.plist | xxd -p -c 1000000`"
plutil -convert xml1 VersionedSectionInfo2.plist # defaults unfortunately converts its output to binary plists, so need to convert back

# Upload changed notification settings to device
scp ./VersionedSectionInfo2.plist ios:/var/mobile/Library/BulletinBoard/VersionedSectionInfo.plist

# Apply changed notification settings
ssh ios "killall SpringBoard" # we need to respring because notifications are managed by SpringBoard
sleep 2

# Unlock again (at least, on devices with home button)
ssh ios "activator send libactivator.system.homebutton"
sleep 1
ssh ios "activator send libactivator.system.homebutton"

base2.plist

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
	<key>$archiver</key>
	<string>NSKeyedArchiver</string>
	<key>$objects</key>
	<array>
		<string>$null</string>
		<dict>
			<key>$class</key>
			<dict>
				<key>CF$UID</key>
				<integer>7</integer>
			</dict>
			<key>appName</key>
			<dict>
				<key>CF$UID</key>
				<integer>5</integer>
			</dict>
			<key>dataProviderIDs</key>
			<dict>
				<key>CF$UID</key>
				<integer>0</integer>
			</dict>
			<key>displayName</key>
			<dict>
				<key>CF$UID</key>
				<integer>0</integer>
			</dict>
			<key>factorySectionID</key>
			<dict>
				<key>CF$UID</key>
				<integer>0</integer>
			</dict>
			<key>hideWeeApp</key>
			<false/>
			<key>icon</key>
			<dict>
				<key>CF$UID</key>
				<integer>0</integer>
			</dict>
			<key>isAppClip</key>
			<false/>
			<key>isModificationAllowed</key>
			<false/>
			<key>isRestricted</key>
			<false/>
			<key>managedSectionInfoSettings</key>
			<dict>
				<key>CF$UID</key>
				<integer>0</integer>
			</dict>
			<key>pathToWeeAppPluginBundle</key>
			<dict>
				<key>CF$UID</key>
				<integer>0</integer>
			</dict>
			<key>sectionCategory</key>
			<integer>0</integer>
			<key>sectionID</key>
			<dict>
				<key>CF$UID</key>
				<integer>2</integer>
			</dict>
			<key>sectionInfoSettings</key>
			<dict>
				<key>CF$UID</key>
				<integer>3</integer>
			</dict>
			<key>sectionType</key>
			<integer>0</integer>
			<key>subsectionID</key>
			<dict>
				<key>CF$UID</key>
				<integer>0</integer>
			</dict>
			<key>subsectionPriority</key>
			<integer>0</integer>
			<key>subsections</key>
			<dict>
				<key>CF$UID</key>
				<integer>0</integer>
			</dict>
			<key>suppressFromSettings</key>
			<false/>
			<key>suppressedSettings</key>
			<integer>0</integer>
			<key>version</key>
			<dict>
				<key>CF$UID</key>
				<integer>6</integer>
			</dict>
		</dict>
		<string>com.bimiboo.birthday</string>
		<dict>
			<key>$class</key>
			<dict>
				<key>CF$UID</key>
				<integer>4</integer>
			</dict>
			<key>alertType</key>
			<integer>1</integer>
			<key>authorizationExpirationDate</key>
			<dict>
				<key>CF$UID</key>
				<integer>0</integer>
			</dict>
			<key>authorizationStatus</key>
			<integer>2</integer>
			<key>bulletinGroupingSetting</key>
			<integer>0</integer>
			<key>carPlaySetting</key>
			<integer>0</integer>
			<key>contentPreviewSetting</key>
			<integer>0</integer>
			<key>criticalAlertSetting</key>
			<integer>0</integer>
			<key>lastUserGrantedAuthorizationDate</key>
			<dict>
				<key>CF$UID</key>
				<integer>0</integer>
			</dict>
			<key>lockScreenSetting</key>
			<integer>2</integer>
			<key>notificationCenterSetting</key>
			<integer>2</integer>
			<key>pushSettings</key>
			<integer>63</integer>
			<key>showsCustomSettingsLink</key>
			<false/>
			<key>showsInLockScreen</key>
			<true/>
			<key>showsInNotificationCenter</key>
			<true/>
			<key>showsOnExternalDevices</key>
			<true/>
			<key>spokenNotificationSetting</key>
			<integer>0</integer>
		</dict>
		<dict>
			<key>$classes</key>
			<array>
				<string>BBSectionInfoSettings</string>
				<string>NSObject</string>
			</array>
			<key>$classname</key>
			<string>BBSectionInfoSettings</string>
		</dict>
		<string>生日</string>
		<integer>0</integer>
		<dict>
			<key>$classes</key>
			<array>
				<string>BBSectionInfo</string>
				<string>NSObject</string>
			</array>
			<key>$classname</key>
			<string>BBSectionInfo</string>
		</dict>
	</array>
	<key>$top</key>
	<dict>
		<key>root</key>
		<dict>
			<key>CF$UID</key>
			<integer>1</integer>
		</dict>
	</dict>
	<key>$version</key>
	<integer>100000</integer>
</dict>
</plist>