@lqzurich
G'day. Interesting question, probably even TTS can be enabled on 1100. It runs the same fw as 1250 and afaik they're identical hardware but like with some 12x0/13x0/14x0 many features are blocked by it's region 16 [logo splash]. TTS, SLI, LA, JCV are all blocked on 1100.

I'd like to know what splash version is presently on your unit. Press and hold battery symbol for ~6 seconds, press 'Next'>'Start Test'>'More' and look for 'Splash'. My Canadian 1200 and US 1300 both originally had splash of D1340-00.

I've not updated an 1100, but by flashing the logo either using Lolypop000's pack for 1200 HWID 0971, or acleite's generic microSD method [both in initial post], all of those features including TTS should be enabled. Your unit will still identify as a nuvi 1100 on start-up but if successful it will function like a 1250.

Your report would be welcome.