S
@zubozrout @dobey I found this and managed to install it. I know it's for 14.04, but somehow it work, don't really know what I've done. I played with aptitude and get the public.key from ubports, it still said that click-ubuntu-policy is missing and has no installable candidate. Anyway, now it just successfully flashed my Pro5 with latest Stable release. I'm over the moon
this is what I've done;
echo "deb http://repo.ubports.com/ bionic main" | sudo tee /etc/apt/sources.list.d/ubports.list
wget https://repo.ubports.com/pubkey.gpg
--2019-01-18 10:36:36-- https://repo.ubports.com/pubkey.gpg
Resolving repo.ubports.com (repo.ubports.com)... 104.24.1.9, 104.24.0.9, 2606:4700:20::6818:9, ...
Connecting to repo.ubports.com (repo.ubports.com)|104.24.1.9|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 1702 (1.7K)
Saving to: ‘pubkey.gpg’
pubkey.gpg 100%[===================>] 1.66K --.-KB/s in 0s
2019-01-18 10:36:36 (10.3 MB/s) - ‘pubkey.gpg’ saved [1702/1702]
stefano@stefano-Inspiron-13-5378:~$ sudo apt-key add - < pubkey.gpg
OK
sudo apt update
then just download this package and install it:http://de.archive.ubuntu.com/ubuntu/pool/universe/g/goget-ubuntu-touch/ubuntu-device-flash_0.2+14.04.20140416.2-0ubuntu1_amd64.deb
all done and ready to flash UT on 18.04 !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Thanks you guys for your help, you rock!