So I managed to brick my unit. The toolkit will start to load after power on, but only makes it part way through before the unit turns itself off. This is the unfortunate situation after having deleted a flash drive folder to replace it with a virgin one from another unit via the SD drive. My fault really, the truck power turned off part way through the delete/replacement process. Duh......
Any ideas how I might get it up into a window I can use to restore my flash drive (given the toolkit doesn't seem to want to come up anymore).???
Maybe a trip to the Pioneer service center is in this unit's future.