The CWM, popularly known as Clock Work Mod allows you to install firmwares (stock / custom) on your tablet. Since Acer Iconia Tab A701 is an Android tablet, it also has CWM. To flash custom firmwares, you must install custom CWM. To do that, follow these steps:
Step 1 – download the custom recovery image from here.
Step 2 – Make sure you have Android SDK installed. If not, install it and go to its ‘platform-tools’ folder. Type this into the termnial
fastboot flash recovery recovery-a700-update1.img
Step 3 – Enter recovery mode in A701 by pressing Vol down + power button. Type in this commend
adb reboot recovery