It's normally you won't find it. This version is old, original by SSS. For uninstall, I think is the best go to manually. Connect via FTP, and
delete IPTVPlayer folder in your extensions. Reboot the box. Download the latest version by W@Rp as ipk. Reboot the box again.
I don't know if in OpenATV image exist in feed E2iPlayer for installing, because it would be fastest options to install player.