Notes for my self:

2025-07-27: Before 1. upgrade using apt update ; apt upgrade remove a symlink

cd /
ls -lart
lrwxrwxrwx   1 root root     7 Feb  2 06:15 lib64 -> usr/lib
sudo rm /lib64

Source: https://github.com/PNDeb/pinenote-debian-image/issues/99

# Find da_DK.UTF-8 and remove the commend
vi /etc/locale.gen
# Generate the danish locale
sudo locale-gen

minicom -D /dev/ttyUSB0 -b 1500000

sudo apt-get update
sudo apt-get upgrade
sudo apt-get full-upgrade
sudo apt-get upgrade
sudo shutdown -r now 

Source: https://github.com/PNDeb/pinenote-debian-image/issues/119

sudo apt install curl
curl -L --output-dir /etc/apt/sources.list.d -O https://github.com/PNDeb/pinenote-tweaks/raw/refs/heads/main/pn_custom_repo_and_keyring/apt_sources/pnedeb.sources

sudo curl -L --output-dir /usr/share/keyrings -O https://github.com/PNDeb/pinenote-tweaks/raw/refs/heads/main/pn_custom_repo_and_keyring/keyrings/pinenote_repo_key_5.gpg