First wait at least 15 minutes if you are doing a POE Upgrade.. Whatever you do, do NOT power off the switch until it completes!
If you are connected over ssh, you can see the progress live you can do that with term mon
You can do a "show logging" to see where you are at in an upgrade if that is what you are doing, too...
For what it is worth, I have never seen the above result from a failed POE Upgrade only from a device with failed hardware. Often a show chassis will tell you the power supply is bad when you see a message like this.
The procedure is listed in the documentation for the upgrade, and if this is resultant of a failed upgrade or not an upgrade at all, sending the POE firmware is the first step.
This is the command I issue, and it has worked every time for me without issue *knocks on wood*:
Also I use the below command is ONLY for the icx64xx. The POE firmware on the icx 7xxx series is automatic with the Fast Iron upgrade. Overall the entire upgrade process is streamlined with the newer series!
inline power install-firmware stack-unit 1 tftp 10.1.2.3 icx64xx_poeplus_02.1.0.b004.fw
I use it with Tftpd64 by Ph. Jounin, but there are many great TFTP servers such as Solar Winds for example. Either way make certain you are in the correct directory if you are sending the firmware, too.
Thanks Simon. Actually this is probably hardware failure related as I was not doing an upgrade. The symptoms were that are POE devices all dropped and upon rebooting the switch we saw that the firmware version was all zeros.