Thread: (Nuvi 660) Is it possible to convert OEM FW to regular one?

Will you try this one:
[Only registered and activated users can see links. ]

It is very possible. Thanks for the info. Maybe I`ll try it on my 760 someday.

@ddabcd277 -- I can also confirm that your file works perfectly (despite the "error" in sysinfo. I suspect there is some checksum bit elsewhere that was based on the original splash and is not being updated).

So is the only difference that c0 byte (where I had d0)? what is it for and how did you figure it out?

I am impressed ...

Thanks!

Sean

Originally Posted by TCIII

It shows fail on the system info for the logo....

Excuse me for writing one more time on this topic but now I figure something out that I think is important. Let me explain. The checksum of the logo I posted above was alright but the size of the logo not. This is the reason why even when the calculated end byte is correct on the system info it is still written fail. The size of the above logo is 262*146 bytes which can not be divided by 1024 exactly. Every garmin logo is closed by 1024 bytes. So the right size should be 262 144 bytes. Here it is I think the final version. There shouldn't be fail on the start up screen:
[Only registered and activated users can see links. ]