to swap hard keys up_down exchange values for Keys 104 and 109 in rk29-keypad.kl for the hard keys
located in total_commander app: system files:
system/usr/keylayout/rk29-keypad.kl
move and edit in non sys area, copy back to sysfile area
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For home button installed as in some my tablets:
https://play.google.com/store/apps/d...pp58us.backkey
background alpha to 0 and reduced foreground alpha too for transparent look, rearranged & dragged HOME button to top and BACK to bottom:
app settings: swap tabs on top: drag buttons from right to rearrange