Look at your old files and replace them with the new one, usually files naming increases by one set of ten (example: D2329150A.G2S--->D2329160A.G2S).
For files you need and paths look at your garmindevice.xml in Garmin folder:
[Only registered and activated users can see links. ]<Path>.System/JCV</Path>
<FileName>D2504000A.JCV</FileName>
</UpdateFile>
-<UpdateFile>
<PartNumber>006-D2330-00</PartNumber>
-<Version>
<Major>3</Major>
<Minor>1</Minor>
</Version>
<Path>.System/SQLite</Path>
<FileName>D233000.db</FileName>
</UpdateFile>
-<UpdateFile>
<PartNumber>006-B0482-01</PartNumber>
-<Version>
<Major>5</Major>
<Minor>50</Minor>
</Version>
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