Installing troubles Rasberry Pi 4 model B 4 GB

I have a Rasberry Pi 4 model B 4 GB and a Mesa 7I96S. I am trying to install linuxCNC but having some issues. I am using the Raspberry Pi imager V1.7.5 and I have tried each of these configurations (and a couple of different ISO's I found) on both a 16 and 128-GB SD card

When I try to install LinuxCNC 2.8.4 Debian 10 Buster PREEMPT-RT I get the following screen

 

When I try to install LinuxCNC 2.8.1 Raspberry Pi OS based on Debian 10 Buster I get the following screen saying that the software is too old.

 

I can't figure out why it won't install. Sorry if this issue has been answered somewhere else, I didn't find any threads with the same issue, Any help would be much appreciated.
 

What exact images are you using ?

there is an option in the imager to update the bootloader. It shows that is required. on a sucessful burn, the screen goes green. Try that and see if it helps. I was able to build an image from scratch and built linuxcnc on the pi this week. I needed to update the boot loader. I've recorded the required steps to install linuxcnc so the next step is to script that inside the installer which runs on a X86 machine and crosscompiles.

rodw wrote:

there is an option in the imager to update the bootloader.
 

Where? I do not see in settings

rodw post=279374 userid=20660I've recorded the required steps to install linuxcnc so the next step is to script that inside the installer which runs on a X86 machine and crosscompiles.

Where is this?

I tried the ones located here:

linuxcnc.org/docs/stable/html/getting-st...etting-linuxcnc.html

Changed the tittle to reflect it's for RPI 4.

Jeffy wrote:

rodw wrote:

there is an option in the imager to update the bootloader.
 
Where? I do not see in settings

rodw post=279374 userid=20660I've recorded the required steps to install linuxcnc so the next step is to script that inside the installer which runs on a X86 machine and crosscompiles.

Where is this?

1. Keep looking at the dropdowns or use google 
2. It isnt anywhere public yet.

Yeah guys I'm really stuck here

The best advice would be to use the method described in the V 2.9 getting started docs. 
But the version of linuxcnc is fairly old and spi I don't think is supported.
Once I have something working, I will share an image ready to go. Hopefully one more build away....
 

Hi Jeffy,

Did you manage to figure out how to get it working?
This morning i also got my raspberry PI4B 4GB + Mesa 7i96S delivered and when trying to install get same error:
start4.elf: is not compatible
This board required newer software.

i downloaded from linuxcnc.org/downloads/ LinuxCNC 2.8.1 Raspberry Pi OS based on Debian 10 Buster and used Raspberry Pi Imager V1.7.5 to write image to card.

writing the stock images selected on the pi imager, the PI boots up ok but when loading the "Pi OS based on Debian 10 Buster" "2021-01-20-linuxcnc-pi4.img" file get error .