Mine config working is :
other.ini in bootloader/ini
[LineageOS]
l4t=1
boot_prefixes=switchroot/android/
id=SWANDR
icon=switchroot/android/icon_android_hue.bmp
logopath=switchroot/android/bootlogo_android.bmp
r2p_action=self
; alarms_disable=1 uncomment to disable notifications for better...