Hello, I just successfully upgraded my second QNAP TS-212P NAS from jessie to stretch.
I didn't remember how I did the first one last year. I went to Martin's excellent web site and did what is described as "Re-installing Debian" from the following page: http://www.cyrius.com/debian/kirkwood/qnap/ts-219/deinstall Just before that I setup a dhcp server entry for my NAS to be sure of the IP it would get. This will make a nice +1 in armel's popcon statistics in addition to the other one. vince@debian:~$ uname -a Linux debian 4.9.0-6-marvell #1 Debian 4.9.82-1+deb9u3 (2018-03-02) armv5tel GNU/Linux Thanks all for the hard work put into still supporting this old-but-not-dead-hardware ! -- Vincent Legoll