Hi Neil
I took the liberty of applying this reduced rgn to my 695, which has the same issues and error messages, and wanted to offer feedback. In my case it made the unit unresponsive, but was able to boot back to the "Software Missing" start screen.

I've reloaded the latest firmware multiple times, it mostly loads 0-100% very quickly, but has occasional taken a few seconds, sometimes failing en route, but always incomplete.

I'd love to try reformating the drive, but that doesn't seem possible. I can see the device but not the drive in Windows even with the partition management app that normally finds everything that is a data storage device.

The intermittent nature perhaps indicates a hardware connection failure at this stage, so will consider replacing a chip as I can always keep this unit for spares as it is otherwise pristine. Has anyone had success resoldering the PCB to eliminate dry joints?

Kind Regards
Christopher