Hello,
There was this nice person. This nice person helped me.
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If I am not mistaken, use this command for your SD Card usage and for the eMMC when on 4.19.x:
sudo /opt/scripts/tools/developers/update_bootloader.sh
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That command will update your bootloader to the updated version that this nice person patched earlier in the uboot_overlay section of his/her scripts.
Okay so!
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Also, check the your version.sh file at /opt/scripts/tools/:
sudo /opt/scripts/tools/version.sh
dogtag:[BeagleBoard.org Debian Image 2018-10-07] is my image and my kernel is kernel:[4.19.59-ti-r26].
Seth
P.S. I think this nice person already updated the uboot_overlay section. So, things should work out of the box now. I am going to update my kernel soon. I will let people know how things go.