Root zip problem

[r2tabletdroid]

i have an acer a500 icontab android tablet. i want to update the usb driver. i downloaded its zip file and i could not open. how do i unzip a zip file on android?

 

[dasudevil]

you can try astro file manager

i have been able to unzip files within the program..

 

[r2tabletdroid]

thanks.