I'm stuck with this option and it won't change to 2-5, it reverts back to 1 on its own.
Without more clear information idk what to suggest other than to try the firmware update again or contact your vendor. The bold text from your comment says that it wont change 2-5 but then you say it reverts back (to revert back it must have changed) so it's really unclear to me exactly what your doing or how you come into the problem. Like I said earlier, I haven't noticed anything automatically changing when I choose Configuration 1-5 that's what I have. IDK how you've setup your
device but here's basically how mine is. C1 - Ni200, C2 - Ti01, C3- SS304, C4 - Power, C5 - Manual TCR so I can see which ever Cx I have selected in front of the Joule counter with the exception of the C5 configuration as it displays the T - Manual TCR. More information on your configuration settings and step by step of how you come into the problem may help sort it out.
Try this:
Remove your cover just to make sure it's not inadvertently pressing one of the buttons.
Enter Menu with 5 clicks of the fire button
One more click of the fire button to get to "Configure Mode"
Hit Up/Down until "Configure 3" is diplayed.
Hit the fire button 4 times to get to "Coil Select"
Choose any of the coil types other than Manual TCR
Hit fire button two more times to Exit or hold it down for a few seconds.
Now what does the Cx in front of the Joule counter say?
