Upgrade tinypilot from Git

[webber63]

Hello everybody.
I'm trying to upgrade 0.12 tinypilot (2019/12/21 image) to latest on Git.
I launch the commands given on wiki:

cd

mkdir delete
cd delete
git clone git://github.com/pypilot/pypilot
git clone git://github.com/pypilot/pypilot_data
cp -rv pypilot_data/* pypilot
cd pypilot
python setup.py build
sudo python setup.py install
cd
sudo rm -rf delete

Everything seems fine but when I reboot it (apparently?) reverts to 0.12

Tried with filetool.sh -b but problem persists.
Any hint?
Thanks, bye