I'm doing the prep to upgrade from 8.0sp1 to the latest 9.0sp3.
Ideally, I want to run the upgrade myself, as I've done multiple past upgrades, but I understand that this upgrade is quite a bit more complicated, since you have to reflash the E2T card, and it switches to a very different underlying version of Linux.
Anybody done this upgrade without their Mitel VAR onsite?
It seems silly, but my biggest reason not to bring them on site is that I have to run stuff like that through my legal department, and it can literally take 6 months for them to approve something like that.
Anyway, the one bit I'm not totally clear on is the order of operations for upgrading the firmware. I got the overall install/upgrade docs, and separate docs just for upgrading the firmware. Am I correct that the process is:
- Run software upgrade
- Controller fails to fully boot because of old E2T firmware
- Upgrade the firmware via serial cable
- Reboot into newly upgraded (and hopefully working) 9.0 system