Update HTC 610

I want to update my HTC 610 which is currently on 4.4.2
Ive tried software's updates via phone but says am up to date
so looks like I have to do it manually
Is this correct way for doing it in the link below?
and which do I need >> [FONT=&amp]Post-Paid or [/FONT][FONT=&amp]Pre-Paid?
Cheers Joe.
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HTC Desire 610 (AT&T) - News & download - Support | HTC United States

First how do you know that there is a correct update surly if it was out there it would be already or about to get pushed to your device.?
Unless your very savvy I would steer clear of manually flashing your device as its real easy way to brick device and void any type of warranty.
The best place to visit is xda and find your device everything you need to know will be there.