Quick update on the situation. Followed your above steps, also downloaded latest Garmin Express. Got to the downloading maps part of the process and to about 57%, then download failed message on the red banner. Shortly afterwards realised that the unit no longer connected to GE. A further message came up saying usb not recognised. So I believed This is what happened the last time and soft bricked it. Im going to see if I can sort out the usb error then try again.
Update no2. Started the reg 14 part again on clean sd card. This time computer and GE recognised the device. Successfully download the map. Used updater and rgn file and successfully downloaded that too. Switched unit on, loading maps appeared for about 20 seconds then the white screen has come back .... Think your'e right and something else has failed in the unit.
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