Have searched some and spent fruitless hours troubleshooting:
Is something different in the builds of the last month or so that they would fail to boot?
I check this with some regularity, but not enough that I'm sure I didn't miss something.
I use
"osKitchen" to cook and haven't had the 280** line Sys boot at all (XIP is fine, and I've often upgraded builds without problem) - I keep reverting to 23504 in shame.
Any ideas? Things I may've missed?