Great that you took the trouble to do that. But the thing is that the file "715_BMW_logo.bin" could have been flashed directly to your 715 as it is in fact a US/EU standard logo.bin with it's images replaced by edited [down-sized] ones from 16.bin in the kit "BMW_3760_Logo_microSD_update" ["Nuvi 37xx BMW logo" in the logo download thread]. I had actually made and posted 715_BMW_logo.rar there in case that was what you wanted. Nevertheless, it's a fun exercise to do what you've done and I'd guess you now have 480x288 pixel fullscreen splash rather than the 'letter-box' 480x212 picture size to which the standard US/EU logo bin is limited, like this:

480x288 480x212 letterbox

If you'd be so kind as to upload your 715's original logo bin here, i'd really appreciate it. I want to compare the rest of it to the standard one loaded to other nuvi 7x5 devices [Garmin branded units]. Thanks in advance.

Also, are there any features you've noticed lacking in the BMW 715 unit that are available in the standard nuvi 765? If so, it might be possible to activate them with a different logo flash as can be done with EU 710, US/EU 205/W, 1xxx and some 2xx/W.