Seems like this could be a painful, multiple-step process depending on how old your starting point.
I just ordered one of these today, since my 8 port IS5022 is already full.
This can be a very stressful process and will depend on the age of the currently installed Firmware image.
Please make sure you have plenty of time before you start this process.
I started one upgrade from SX_PPC_M460EX SX_3.3.4100 2013-09-16 18:27:29 ppc
and took that all the way to the Lenovo PPC_M460EX 3.6.8012 2019-02-22 07:53:42 ppc.
From memory that was around a 6 or maybe 8 stage process. I used the upgrade train information from the HP site - you have indicated
The switch takes around 5 minutes to fully boot.
There are some gotcha’s using the update train in the Web GUI – please see Post 20 in this thread.
It takes around 10-15 minutes to load the next stage HP Firmware and then around 25 minutes to fully install it. You then need to re-boot the switch.
The process is described here.
Please be patient, there are long wait times - where the switch has no indication of progress.
The upgrade from, the HP 3.6.8010
to the Lenovo PPC_M460EX 3.6.8012 2019-02-22 07:53:42 ppc.
takes much more time - maybe around 120 minutes.
I thought this last upgrade process had failed; I did not interrupt it - finally the Web GUI succeeded.
Once you have the latest firmware you can look and enabling the features you want to use.