GS-108Tv2 Firmware upgrade hanging at 22% or less completed

I have tried previously to firmware upgrade my switch unsuccessfully.  Tonight I was determined to give it another go.  I did the following:

- Used the recommended SCC (Smart Control Centre) software version 1.1.3.2

- Discovered the switch IP which was in my subnet, IP address 192.168.2.42

- Used my PC  with IP address 192.168.2.16 and clicked on Maintenance/Firmware and Download Firmware. 

- To see the progress you have to click on the Task tab!

-  The firmware started to download but hung at 22% and after a while I had to quit.  Fortunately no damage done.

I did this a few times but it refused to download.

Then I thought "my computer is plugged into an HP switch and the Netgear is plugged into the same switch which are on my domain"

I decided to try just connecting the laptop directly to the Netgear switch and see if it worked.

Success - it upgraded first time perfectly.  The lesson learnt was don't firmware upgrade through another switch - do it directly.

I hope this helps someone else.