Hi everyone,
I have several of the newer nuvi's that I'm intent on jailbreaking, including the nuvi 2555.
I discovered that by entering the developer options through the volume page, you can get to Diagnostic Logging > Start Recording > = (Hamburger Widget) > Debug ID you can enable debug logging. Unfortunately, I don't know what the debug ID could be. I've already tried the common phrases and all the serial numbers I could find on my unit.

Does anyone know what it is?

Thanks,
--Xack