It would generally update automatically to the latest widespread version (4.7.5.1.83.8.263) within 24-48 hours after a factory reset. Can you prod a paper clip into the reset pinhole at the back for 20 seconds?
This is my personal Community Forum account to help out around these parts while I'm at home. If I'm posting from the 1st March 2020, this means I'm off-duty with no access to internal systems.
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