Installation on Raspberry Pi 4 / 5 (on SD card and USB stick) fails.

Whenever I try to boot the Pi with the installation media (whether from an SD card or USB stick), I get the following message (20250514_123932.jpg).

Does anyone have any idea what I’m doing wrong?

If I’ve missed something obvious, I apologize; I’m still a complete novice at this.

Simply use the ARM Flash image
https://downloads.ipfire.org/releases/ipfire-2.x/2.29-core194/ipfire-2.29-core194-aarch64.img.xz

And create an SD card with this image using Pi Imager.

Don’t forget to modify the uENV.txt file to use HDMI.

Does this do this with the sd card or usb install of raspberry pi os?

I also read the two articles suggested to me by Phil SCARpscar13: (Just seeing the “rainbow-colored” screen on Raspberry 4 Rev 1.5 - #2 by pscar13 ). …
My English isn’t the best.
Phil SCARpscar13’s advice helped me.
I started making the mistake of connecting the micro HDMI cable1 to the wrong port (the left one).
As a beginner, it was a bit difficult for me to figure out the (well-documented) differences between the ISO image and the tar.gz image, as all the primary guides say to use the ISO image and recommend tools like Rufus.
None of the guides I know of advised me to install the tar.gz file with the Raspi Imagineer.
After installing the ISO image, I couldn’t find any of the files I needed to correct.
But after transferring the tar.gz image to the SD card with the RAS PI IMAGER and changing the HDMI port, I was able to access the configuration settings.
Currently, I still have to deal with the LAN and WAN configuration.
But since I’m apparently an exception when it comes to installing ipfire on Raspberry Pis, I apologize for any misunderstandings that may have arisen.
Best regards, Nicolai

I’m not entirely sure about this.
Following the instructions, I installed the ISO image onto an SD card and a USB stick using Rufus.
However, the error message displayed occurred regardless of the medium I transferred the ISO image to.
Only using the tar.gz file resulted in the installation media matching what the installation instructions for installing ipfirfe on raspis indicated.

The installation instructions specific to the raspberrypi4 say to use the flash image file and not the iso image file.

https://www.ipfire.org/docs/hardware/arm/rpi/four

See the section starting with the following lines

Download the latest IPFire (Flash Image) and flash it to an MicroSD card. Before removing the SD Card from your computer, please see this Note!

I’ve clarified this on the page www.ipfire.org - Step 2: Prepare the installation media

You’re both right. I mistakenly assumed that the contents of both files were identical and that it was just a different installation variant.
I apologize for my mistake, and thank you all for your competent and friendly help.