Lumia 810 and Black update.... or lack there of

[Raybz]

If this has been asked and answered I'm sorry.

I own a L810 T-Mobile, from everything I have seen it looks like Tmo isn't going to release Black to it
I understand the GDR3 and Black are OS and firmware and all that. I have been waiting for the update for a while as I would like some the features that Update 3 offers (custom sms tones for one) If I were to do the developers update of U3 will I loose Amber? Will I get the custom sms tones ect? I understand that I wouldn't get the Nokia features of Black

 

[Kris Simundson]

if you do dev GDR3 you'll still be on Amber