Here is a keymap xml for the A2 & A2 Lite that fixes the back button taking you back to the home screen instead of just one folder up.
You need to copy it to your keymaps folder in:
Android/data/hk.minix.xbmc/files/.xbmc/userdata/keymaps
Reboot XBMC and you should now be able to browse normally.
<keymap>
<global>
<keyboard>
<backspace>Back</backspace>
<key id='61467'>Back</key>
</keyboard>
</global>
<FullscreenVideo>
<keyboard>
<backspace>Back</backspace>
</keyboard>
</FullscreenVideo>...
Fix A2 & A2 Lite back button in XBMC
You need to copy it to your keymaps folder in:
Android/data/hk.minix.xbmc/files/.xbmc/userdata/keymaps
Reboot XBMC and you should now be able to browse normally.
<keymap>
<global>
<keyboard>
<backspace>Back</backspace>
<key id='61467'>Back</key>
</keyboard>
</global>
<FullscreenVideo>
<keyboard>
<backspace>Back</backspace>
</keyboard>
</FullscreenVideo>...
Fix A2 & A2 Lite back button in XBMC