1. Download Acho C908 firmware here: C908_TX972_120519_b43_v12.rar 2.Changelogs: Optimize touch response speed and 3D game compatibility. 3. Update Steps: 1) Decompress the file and copy them to TF card root directory. 2) Shut down Acho C908 and insert the TF card into tablet. 3) Press -Volume button and start the device. 4) Press power button to choose "apply update from external storage" when recovery interface appears. 5) Choose update.zip file in TF card and press power button to confirm. 6) System will upgrade automatically and instruct "Install from sdcard complete" once completed. 7) Choose reboot system new and press Power to restart the tablet, the updating succeed. Order Acho C908 on Androidinabox.com: Acho C908 - 9.7 inch IPS Dual Core Tablet Android 4.0 only $239.99!