Before downloading, make sure your device is Acer Liquid E1 V, if it is not, then flashing the below stock firmware can brick your device. The Acer Liquid E1 V firmware helps in unbricking the device, updating the device to latest android version, revert the device back to stock, fix boot loop issues and several other issues on your device. Refer to the “How to root your Acer Liquid E1 Duo” article to learn how to run such a process. We recommend using backup applications like Titanium Backup and Helium that you can download for free from the Google Play Store. Titanium Backup. With this app you can create and restore backups of user and system programs via your Acer Liquid E1. To use Kingo, you simply have to go to the web and download “Kingo Root”. Once installed, the application will guide you through the process of rooting your Acer Liquid E1 Duo. Root Acer Liquid E1 Duo with Towelroot. In June , an American hacker released a root operating system hack for Android devices like your Acer Liquid E1 Duo.