Is it possible to downgrade from 4.3 to 4.2.2 at all?
Even if you have to keep the 4.3 bootloader and/or lose your warranty or whatever else?
I'm bought this T-Mobile M919 in USA last week, but I'm back to Brazil, so I don't mind to lose my warranty because it will cost more to send it to USA then send back here instead buy another one.
I paid for unlock my phone by IMEI, I received the code to unlock but looks like I can't do it because I'm on 4.3, most methods don't work like the 4.2.2 version. So that's why I need to downgrade to 4.2.2
Like dialing *#1234# to check the version won't work on 4.3