Acer Iconia Tab A100 users will be happy to know that there will be an Ice Cream Sandwich update in their device, thanks to vache of XDA Developers forum who found the leaked firmware. Now if you don’t know how to update your Iconia tab A100 Firmware don’t worry, just follow the simple steps below.
Make sure that your device battery is charge at least 60%
Backup your device data into your computer.
Turn on USB Debugging, on your homescreen tap Menu> Settings> Application> Development. Then, make sure that USB debugging is checked.