Unpack boot.img and add "androidboot.selinux=enforcing" to boot.img-cmdline not work on Samsung

After flashing Android 13 of LineageOS to Galaxy Note 10+, I'm trying to set SELinux permissive following the steps. 1. Unpack boot.img and add androidboot.selinux=permissive to boot.img-cmdline 2. use Heimdall, and flash the packed boot.img: heimdall flash --BOOT myboot.img The phone would auto-reboot after the flashing was complete. But adb getprop ro.boot.selinux still returns enforcing. And I checked cat /proc/cmdline, there is androidboot.selinux=enforce. This method works on Pixel 3XL with Android 13 LineageOS. I don't know why flash boot.img does not work on Galaxy Note 10+. I checked boot.img with hex editor(vim), and found cmdline as there. ``` 00000000: 414e 4452 4f49 4421 10e0 f602 0080 0010 ANDROID!........ 00000010: 96d5 1500 0000 0011 0000 0000 0000 0000 ................ 00000020: 0001 0010 0008 0000 0100 0000 8301 001a ................ 00000030: 0000 0000 0000 0000 0000 0000 0000 0000 ................ 00000040: 616e 6472 6f69 6462 6f6f 742e 7365 6c69 androidboot.seli 00000050: 6e75 783d 7065 726d 6973 7369 7665 2062 nux=permissive b 00000060: 7569 6c64 7661 7269 616e 743d 7573 6572 uildvariant=user 00000070: 6465 6275 6700 0000 0000 0000 0000 0000 debug...........