How to install linux (ubuntu) on my new Rk3588s sbc?

Hi,
Is there any instructions on How to install linux (ubuntu) on my new Rk3588s sbc?
It is currently running android.

Can any share the instructions (step by step) on how to install ubuntu instead?

Hello
Please referencet to this link:

and We put it together in one post:

Make sure to read the wiki tutorial carefully.
Make sure to read the wiki tutorial carefully.
Make sure to read the wiki tutorial carefully.

MY System environment: win10 Enterprise Edition
Ubuntu Firmware Version:
ROC-RK3588S-PC_Ubuntu20.04-Gnome-r21199_v1.0.1b_220812
ROC-RK3588S-PC_Ubuntu20.04-Minimal-r21164_v1.0.0c_220621

Tool and Driver:Tool and USB Driver - Google Drive

There are two ways:

  1. Update via Type-C



  1. Update via SD card.

sd flash
[Upgrade firmware] mean upgrade emmc os, [SD boot ]mean boot from SD card but do not upgrad the firmware.
If you want to upgrade os , please choose Upgrade

So let’s take it in order:

Now I need to upload an image to the SD card (a large file with the .img extension) and tick SD boot, not Upgrade firmware, as it was in the instructions?
Next, I just insert the SD card and supply power, or do I still need to clamp the “recovery” button?