I had poured over that section previously, but wasn't sure if that file was right for me. The wording confused me because right after the line "Flash full 34xx firmware
Unpack the file to an empty SD card, turn nuvi off, insert card, turn nuvi on. remove sd" you have "and to return to 37xx ,its logo included:" and then later have the file attached. I didn't want to do the wrong thing and thus I tried the method in post 40 of this thread.

I did go ahead and use the file from the Dummies thread. It worked on both my devices and I have the html folder and file.

The 3750 hardware isn't Bluetooth, ASR, or Smartphone capable. Can I remove these apps?