R32.3.1 who maintains https://elinux.org/Jetson/TX2_SPI

Is this correct for r32.3.1

Can you review this and make corrections please.

I am confused by this section.

Enabling the New DTB
The r28, r32 release must update the dtb by below command.

sudo ./flash.sh -r -k kernel-dtb jetson-tx2 mmcblk0p1
Do not update the DTB by below for r28. r32 and later release. As in Jetson/TX2 DTB, enable FDT in /boot/extlinux.conf

I used dd to copy my compiled dtb to /dev/mmcblk0p30 but it bricked my system.

For the dd part, see:

The unit will work again once flashed with the signed device tree.

The point is that the web page in the subject is in need of updating, and I do not know who to tell

If you are asking about the eLinux.org page, I believe he has been notified. In terms of web pages of devtalk.nvidia.com, several people will see this every day, and is actively updated.