Hopefully I may be able to tell you in an hour or so. I was fiddling with it to the point of getting myself into a boot loop so now I have to reflash.

Edit (a few hours later):
Reflashed, restored from backupmenu backup, added Debian repos and... it works! I don't know what I did wrong the last time. Most likely a typo in the URL or something like that.

But there is a small problem. I can't install anything from the Debian repos because the Maemno packages are so old that installing even the simplest Debian package requires to upgrade pretty much everything. (Which is how I ended up with an unbootable device in the first place. Tried to upgrade libc6 manually and ended up with a partial installation that went boom on the next reboot.)