Just an update on my previous post.
JumboSPOT HS Hat firmware FIXED!
I found that it was relatively simple to update the hat firmware, so refitted the JumbSPOT board and ran,
When the system rebooted, all was now good, all fields on the Nextion Display now show and load in a timely manner."sudo pistar-mmdvmhshatflash hs_hat"
Got to laugh, solution was relatively simple, but I had to work through it all, though it was a learning exercise.
Now I can confidently update and fix two other units that run the same hardware!
Many thanks for your guidance and tutoring,
73, Ben VK5BB