@droftarts Thank you for your reaction.

Thank you for your responding.

Dear all,

I haven't used my printer, DIY Delta, for a while, it still works fine.
I would like to use my printer more often now that I have more time.
I want to upgrade my Firmware to the latest stable version.
This is my current version,

( RepRapFirmware for Duet 2 WiFi/Ethernet 2.05RC2 (2019-12-08b1)
Duet WiFi Server Version: 1.26
Board: Duet WiFi 1.0 or 1.01 duetwifi10)
Panel Due firmware version 1.23.2

would anyone please explain to me how to upgrade it to the latest version step by step?

Any help is greatly appreciated.