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Updating Openstick on the "4G LTE WIFI MODEM"

This is how I updated Debian from Bookworm (12) to Trixie (13)

Procedure:

Clean any residual packages and configuration files using the following commands:

apt --purge autoremove
apt autoclean
apt purge '~o'
apt purge '~c'
reboot
sed -i 's/bookworm/trixie/g' /etc/apt/sources.list
sed -i 's/bookworm/trixie/g' /etc/apt/sources.list.d/*
    

Add Mobian repository (it is actually now with Trixie):

echo "deb http://repo.mobian-project.org/ trixie main non-free" > /etc/apt/sources.list.d/mobian.list
apt update
    

Initiate the minimal upgrade:

apt upgrade --without-new-pkgs

Now that your package sources have been updated, you can upgrade your system.

Execute the following command to perform a full system upgrade to Debian 13 Trixie:

apt full-upgrade

!UPDATE! adb working

Create /lib/systemd/system/mobian-usb-gadget.service:

[Unit]
Description=Configure USB gadget

[Service]
Type=oneshot
ExecStart=/usr/sbin/mobian-usb-gadget setup
ExecStop=/usr/sbin/mobian-usb-gadget reset
RemainAfterExit=yes

[Install]
WantedBy=multi-user.target
    

Create /usr/sbin/mobian-usb-gadget:

#!/bin/sh
CONFIGFS=/sys/kernel/config/usb_gadget/g1

setup() {
  [ -d $CONFIGFS ] && gc -c
  gc -a rndis
  sleep 1
  gc -a ffs
  mkdir -p /dev/usb-ffs/adb
  mount -t functionfs adb /dev/usb-ffs/adb
  adbd -D &
  sleep 1
  gc -e
}

reset() {
  echo "Removing the USB gadget..."
  if [ -d $CONFIGFS ]; then
    echo "Removing gadget configuration..."
    gc -c
  fi
}

case "$1" in
  reset) reset ;;
  setup) setup ;;
  *) ;;
esac
    

Make the script executable:

chmod +x /usr/sbin/mobian-usb-gadget

Enable the service:

systemctl enable mobian-usb-gadget.service

Reboot:

reboot