Yes, that does make sense, in that you've downloaded the V4.90 fw [as nuvi_760_490.exe] from the perry site, and extracted it to obtain the gupdate.gcd from nuvi7xx>Garmin folder, then used that v4.90 .gcd to make the cure. But that wasn't my point. The gupdate.gcd for 4.90 is 8,835 KB, you have v5.40 .gcd showing in your nuvi [it's 8,843 KB], yet you say you used the v5.40 .rgn file from Garmin to load the original fw, and therefore there shouldn't be any gupdate.gcd file in your nuvi, unless you dl'ed that with WebUpdater. Probably you checked the 'Reinstall the same Version' option when prompted by WU. Anyway, your nuvi's fixed and to quote the Bard 'All's well that end's well', it's just that v4.90 as original should have worked 'cos you made the cure3 fw from it.