A negative side effect of flashing a new firmware is that there’s always the possibility that you break root, re-lock your bootloader, and lose your custom recovery. Unfortunately, it often takes a considerable amount of time to get root for the new firmware, which means you could very well be stuck until you find a way to downgrade or a new root method is presented. XDA Senior Member jm77 wishes to fix with for Acer Iconia A500 owners with a comprehensive guide on how to get their bootloaders unlocked, restore their custom recoveries, and obtain root once again.
The guide is easy to follow, but does require some ADB, command prompt, and terminal emulator knowledge—so be sure to follow the guide exactly if you’re not up to date on these things. The guide runs users through unlocking the bootloader, flashing a custom recovery, and getting everyone back to normal. The process is fairly straight forward, and it shouldn’t take very long to execute.
For those who have installed the Ice Cream Sandwich leak and are looking to get their custom recoveries back, head over to the original thread to get started._________