The Organelle OS is rather old and probably due for an update to the newest software releases. This will allow installing the newer version of Pd. Unfortunately this requires rebuilding the disk image which is still a manual process.
Until then, it is possible to install the newest Pd from source. I just did this successfully on an Organelle S. Note that installing it this way and bypassing the package manager is a bit of a hack and should be considered experimental. Make sure to back up anything important first. Or better yet, flash a new OS v4.2 on another SD card and use that.
First download code here
Move it onto the Organelle using scp or web interface. On the Organelle terminal, run the following commands.
Enable filesystem read/write, set date:
cd
sudo fw_dir/scripts/remount-rw.sh
sudo date -s '2024-04-30'
Move and extract pd:
mv /sdcard/pd-0.54-1.src.tar.gz /home/music/
tar xvzf pd-0.54-1.src.tar.gz
cd pd-0.54-1
Remove old pd:
sudo apt-get remove puredata
Build and install new Pd (takes a few minutes):
cd src/
make -f makefile.gnu
sudo make -f makefile.gnu prefix=/usr install
Probably best to restart, and it should be running Pd .54 now