Compatibility issue between hailo-all 4.20 and manually installed 4.19 components on Raspberry Pi

General
1

Hi Hailo team,

I’m trying to install a project on a Raspberry Pi that requires Hailo version 4.19.
At first, I ran the usual command:

sudo apt install -y hailo-all

But this installed version 4.20.0, which causes incompatibilities with my code.

So I tried downgrading manually with:

sudo apt install -y --allow-downgrades \
  hailo-tappas-core=3.30.0-1 \
  hailo-dkms=4.19.0-1 \
  hailort=4.19.0-3

However, when I run:

hailortcli fw-control identify

I get the following error:

[HailoRT] [error] CHECK failed - Driver version (4.20.0) is different from library version (4.19.0)
[HailoRT] [error] Driver version mismatch, status HAILO_INVALID_DRIVER_VERSION(76)
...

I double-checked the installed versions using:

apt-cache policy hailo-tappas-core
apt-cache policy hailort
apt-cache policy hailo-dkms
apt-cache show hailo-all

It seems that while the components are properly downgraded to 4.19, the hailo-all meta-package remains at version 4.20, which might be pulling in conflicting dependencies or keeping older drivers in place.

I’m looking for a way to cleanly install only version 4.19 for everything, or to downgrade hailo-all to version 4.19 — but I can’t seem to make that work.

Any advice or official guidance on how to proceed would be greatly appreciated!

Thanks in advance

2

Please try the instructions from the Raspberry Pi AI page - Alternative Package Versions.

https://www.raspberrypi.com/documentation/computers/ai.html