The “list of common error codes” link doesn’t seem to work.  Outdated?

I, too, have the refuses to process an update due to a non-functioning 4gb internal flash memory problem.  No one wants to touch it.  Not worth their time.  “Get a 360S and kiss it goodbye,” they say.  Seems a shame.  Works perfectly otherwise.  If I could find where it’s soldered to the motherboard I could, perhaps, have a go at fixing it myself.  A low wattage soldering iron and a good solder sucker could be all I’d need.  But nobody seems to have put such info out, that I can find.  Maybe someone here?  Sometime?  Maybe?