I bought a few months ago HERO H7000
, normal performance.But experience tells me that China's mobile phone and 5% there are some problems.
Can be viewed online youtube. The method is very simple, two steps (mobile computers are a common method), a download, and install.
If you are smart phones, generally lattice machine tutorial. If a non-smart phones, there is no warranty or repair.
Brush upgrade to 2.3.