Default [Q] Newbie to Moto X/ Android - 4.4.2 issues

Hi All,

I'm lost, so hope you chaps can help.
Have just purchased a Verizon Moto X developer phone X1060 - its from the USA, I'm in Hong Kong and obviously not using a Verizone sim card - further, I'm a iMac user, so Android is new to say the least to me.

My MX is already "rooted" so want to upgrade to latest 4.4.2, obviously I have to do this via boot loader - big difficulties encountered having download all necessary files and cannot "hard" reboot as getting Andy with Red Triangle - I take it some issue with fast boot or whatever, but after 12 hours effort, absolutely stuck and getting annoyed.

So, time to hit boards and get expert advice me thinks?