If you own a Samsung Galaxy Tab S9 X710, you can now root it by installing this custom kernel. You would need to on the stock ROM. Only UH (KDP, RKP) protections are disabled. Everything else, including Knox, remains intact.
To proceed, unlock the boot loader, which will erase all the data so backup before you flash. Download this file onto your windows computer. Inside DONE.zip/dist, find the file named boot-gz.img. Then, rename boot-gz.img to boot.img
Compress it as a .tar archive using 7-Zip – do not use zip or rar format. Open ODIN on your computer, Press AP, then choose the boot.tar file and start the flashing process.
That is it, you now have a rooted Samsung Galaxy Tab S9 with custom kernel. Keep in mind that other than aforementioned kernel, you must not flash it onto any other Galaxy Tab S9 or its variants. It may permanently brick your android tablet.
Also, flashing this custom kernel will void your warranty, something to keep in mind before you flash it.