1. You can see that on the back of you phone,there write like this: ''Model820ts(or ys or us)''
2.I mean no,only follow tutorial and you will flash firmwork easy..
3.I don't know answer for this question..
:good::good::laugh:
---------- Post added at 10:41 AM ---------- Previous post was at 10:39 AM ----------
Yeah same story,i try to get code from htcdev.com for unlocking bootloader but I failed..
Unfortunately the bootloader unlock at HTCDev only works for the official D820ys