Hi there is there anybody who can fix 2 dead N9
Both device have the same problem :
Won't charge and wont recognize on my PC.
I tried on my linux machine.
sudo flasher -i
response :
Nothing i tried different usb cables and ports.
My first N9 charges with the same cable and usb is working.
I also tried a new battery nothing.
Is here anybody to change the usb ports or make it working again?

Have you tried the plugging it in and unplugging several times trick I've seen mentioned here? I think the idea was that it could get the battery charged up just enough to start up and really charge. You can probably find the post I'm trying to remember for more detailed info doing a google search with the "site" option since power search on TMO is broken (at least for me).

yes i tried nothing even one N9 boots up fine.
but when i plug the usb nothing happes no charging no MTP Device
no devie under terminal with

What does this command in Harmattan flasher elicit?
https://talk.maemo.org/showthread.php?t=87709

Nothing.....

Well, that's sad. If you wanna attempt replacing the h/w, I did a little searching around and found (again) the youtube N9 disassembly video I used when I needed to replace N9 screen and battery. (It's very good.) By about 7.5 minutes in he gets to the micro USB connector. The heat gun he mentions in the beginning is not required to get to this point, but a hot air soldering station will be to remove the surface mount port, which he describes as "Qui' uh tricky job". I think I'd remove the speaker while doing the desoldering work.

I haven't seen an N9 specific USB desoldering tutorial, but there are generic USB connector swapping videos that should help.