Okay I think we're getting somewhere now, and thanks for clarifying this - we definitely need some documentation in one place if possible.
So my route to Nordic including the modem update using serial method:
Three to Nordic using the Tim to Nordic firmware in the Mega link above, using the Framework software included in the download. That took me to Nordic B11 firmware for router but modem B02.
Then using same Mega link, downloaded Nordic to Nordic which aligned the modem/router to allow updates.
Using soldered connection to the board and a CP2102 serial to USB interface, PuTTY, waited for it to boot, pressed enter for CLI and entered:
nv get admin_Password
Took the output to
www.base64decode.org to get the actual password.
Logged in on 192.168.1.32
On PuTTY entered:
nv set imei=866754040397403
Pressed F5 on the web interface to check it had changed, then went to update via web interface. Changed the time to 2am on SMTP settings for it to apply the update. After the update, rebooted, logged back into web interface, waited for it to say update successful, then repeated the nv set imei command on PuTTY before checking for another update and repeating until all the updates had applied.
Is there a way to identify what modem version I am on?
I'm hoping with these instructions other people who want to run pure Nordic with latest modem can follow this clearly, this is only suitable for people with a serial interface so the box needs to be open otherwise you won't get the web interface password or be able to set IMEI. I'd also like to see step-by-step instructions for people who want to do it without serial to get from Three to Nordic with latest modem using OpenWRT if that's possible?