Ok understand, but still which file should I download and upload- Duet2and3Firmware-3.3.zip or just Duet3iap_spi_MB6HC.bin and Duet3Firmware_MB6HC.bin?

@jay_s_uk
Ok thank you for the answer.

Can I ask one more thing because it's not clear for me.
In BOSSA update via USB procedure instruction it says:

Download the latest RRF V3 from here: https://github.com/Duet3D/RepRapFirmware/releases

And under this link of course I have all Releases of RRF, but reading further Release 3.3:

"Users of Duet with attached Single Board Computer (SBC) should upgrade to this release from the stable package server."

What does it mean "stable package server"?

And which file from those almost 50 assets I should upload to my Duet 3 board (keeping in mind SBC configuration)? Duet2and3Firmware-3.3.zip is sufficient?

I am struggling with the firmware update issue on my Duet 3.
I followed the instructions in Getting_Started_With_Duet_3 (https://duet3d.dozuki.com/Wiki/Getting_Started_With_Duet_3)

My Duet 3 works in SBC (RPi) mode.
After the first run in the terminal, I typed the command line

sudo apt update
sudo apt upgrade

After which the system started updating. Unfortunately, after re-entering the M115 command, it looks like the FW is still in beta version and there is a message about the need to update. So the update failed even though there were no errors.
!

That's why I decided to try the second method described in the document: Updating Duet 3 from RRF3.0 Beta 12 to 3.0 Final via DWC
Unfortunately, after uploading the Duet3Firmware_MB6HC.bin file, the update did not start. It's still in beta version.

Is the only possibility to update the FW is to use BOSSA and the micro USB port in duet 3?

Thanks for your help

Hello,
Quick question. Did any one try to use Duet 3 with this type of kinematic system in their printer?

Is it even possible with RRF3?