This post may be a message in a bottle thrown into the sea but hey I'll try anyway.

I just got a used N9 with PR1.3 (40.2012.21-3.480.04.1_PR_480) that has been reset. I wanted to tinker a bit with it so with the help of https://wiki.maemo.org/Resurrect_your_N9 I tried to enable Developer mode but I get a "Unable to trace installation package dependencies" error.

I set up a working wifi connection.
I checked "Allow installations from non-Store sources".
I installed N9 RepoMirror. Tried with both v0.6.0 and 0.7.2. They both installed successfully (see end of post).
Thinking it had to do with some expired root certificates, I set the phone date to several dates between 2011 and 2015.
I rebooted several times.
I also installed Aegis-install hack v1.0.10.

But no luck. Then I installed Karin-Console and simulated an install:

I got this:

I then tried to install manually the two missing dependencies (I found the .deb files on openrepos.net). I could install aegis-dev-mode 0.3 but not aegis-developer-unknown-source-policy 1.26: I get an "Invalid installation package" error (I am not a superuser so not surprising I guess).

Am I missing something? Or is it definitely over for my N9?
I can't reflash the phone because all the links to the flashing softwares and files are dead.

-------
In /etc/apt/sources.list.d, there is a file "n9repomirror.list" that contains the following:
# CODeRUS mirror
deb https://coderus.openrepos.net/n9mirror/001 ./
deb https://coderus.openrepos.net/n9mirror/apps ./
deb https://coderus.openrepos.net/n9mirror/tools ./

# SDK repository
deb http://mirror.thecust.net/harmattan-dev.nokia.com/ harmattan/sdk free non-free
deb-src http://mirror.thecust.net/harmattan-dev.nokia.com/ harmattan/sdk free

# Nokia-binaries
#deb http://mirror.thecust.net/harmattan-dev.nokia.com/ harmattan/41667a5bd857be02f487c2ce806fbf85 nokia-binaries

OpenRepos disabled TLS 1.0/1.1 and doesn't work on old systems anymore. Use fix from file below.

It has worked for me!
Thank you so much.
Now in developer mode there are many things to install. Do they all have to be installed?
Thank you very much again.

Not really

My mother! fiddling with my phone I blocked it! and now when you start up you only see the Nokia logo and it doesn't do anything else. I have tried to flash it but it gives me an error. security error code 10, security failure when starting flashing. What can be?
Thank you very much for your help.

EDIT: I was able to solve it now. The error when flashing it was that it did not choose the appropriate file image.

My answer from yesterday seems to have been moderated for some reason... Anyway thanks a lot, I could enable Developer Mode and am now having a blast playing with the terminal

It's wonderful to see a now 13-year-old OS still having such dedicated fans, hats off to you. Meego really was a gem.

Nah although the Utilities package is worth the install just for wget and nano.

Hello, good evening everyone.
I have a problem. Yesterday I messed around with my phone a lot until I bricked it. I downloaded the firmware but at the end of flashing it gave me an error and now the phone is not working at all. I would like to download the correct firmware for my phone but I don't know what it is. How can I find the mobile code? How do I know which firmware is appropriate? Thank you very much for your time with me.
Greetings.

EDIT: I have already found my product code. It is 059K1T4 RM-696
What firmware would I have to download for the mobile to work 100%? Thank you very much again.