When going through the process of installing OpenVino as documented here, I'm running:
sudo ./install_prerequisites.sh
and getting
ERROR: Could not find a version that satisfies the requirement tensorflow~=2.4.1 (from versions: 2.5.0rc0, 2.5.0rc1, 2.5.0rc2, 2.5.0rc3, 2.5.0, 2.5.1, 2.5.2, 2.6.0rc0, 2.6.0rc1, 2.6.0rc2, 2.6.0, 2.6.1, 2.6.2, 2.7.0rc0, 2.7.0rc1, 2.7.0, 2.8.0rc0)
ERROR: No matching distribution found for tensorflow~=2.4.1
As suggested in the documentation, you can configure frameworks individually if there are errors. However, even using pip it doesn't seem there is a matching distribution for Tensorflow 2.4.1:
pip install tensorflow==2.4.1
ERROR: No matching distribution found for tensorflow==2.4.1
How can you get Tensorflow 2.4.1 installed?
I've already shown you how to debug such problems. Well, let's see.
The list of available packages for tensorflow 2.4.1 includes wheels for Python 3.6-3.8. No 3.9 and no source code. Wheels for Python 3.9 are available starting from tensorflow 2.5.0rc0 — exactly like is said in the error message.
What can you do? 1) Downgrade once more, to Python 3.8. Or 2) Use more recent OpenVino source code; the current sources at GitHub list tensorflow~=2.5 as a dependency. Or 3) Find in your downloaded sources files requirements*.txt and replace version tensorflow~=2.4.1 with 2.5.0.