So in OTHER words. Get the image on the switch. Set that file as the boot variable (the command is "boot system "). And wr and reload. The switch will read the start up config for the IOS it should boot into, aka the boot varible we set earlier and boot into it. Hence why we had to save the config (wr) and reload.
Thank you so much for your information, brother. I have updated my switch by your step by step instruction. It's really helpful for me. Kindly take care of your screen size. The letters are very small that's why the video didn't reach too many people. Next time, please focus on that.
if any of you get stuck @4:24 at the conf command with an invalid command error, type the command enable and it will prompt for your router password, this will elevate you to a privileged EXEC console and allow that command, and many others.