QUOTE(Chyan @ Sep 20 2011, 09:10 PM)
I'm gonna buy me a HTC Mozart tomorrow because of the insabe drop in price.
I was wondering, which version of mango and where do I get it?
How's about unlocking?
Also, I NEED Whatsapp asap after the purchase.

Do play around with the unit before you buy. i saw many bought it because of the price not because the phone suite them and at the end they hate it.
Do take note that new firmware code name "Mango" is not officially released yet for all HTC phone in the market now. those forumer who claims that they are having "Mango" most likely are some unofficial leak from certain web site and they risked their chance to flash "Mango" in their device.
Do take note also flashing to unofficial ROM might leak to "bricking" ya device and those are not cover under official warranty. Do understand what you might come to before you flash. Do full understand the whole process before you carry on with unofficial ROM flashing.
External cause like internet connection and any unexpected hardware or electricity failure will brick the device as well.
Currently there is no Mozart in the market reported come with "Mango".
i hereby do advise those who are having "Mango" on their device. Do not lurke newbie on Mango ROM. As you are clear there are casses some newbie bricked their device because not proper guide are given to them.
If newbie would like you help on "Mango". kindly PM them. but again its up to them have spare time to help you or not.
and lastly... whatsapp is not official yet. :-p