Here is original Garmin logo
[Only registered and activated users can see links. ]

Or..You tell me what is your original boot.bin ., so I can make a gupdate.gcd(contain of your original boot.bin + modified logo.bin contain of original garmin logo) for you.\
Just place it in sdcard\garmin\gupdate.gcd and ...That's it !!

give me your info and your email if you like me to do it for you .