depends on if you're using rpx/channel version or just normal hbl? I don't know if you need to uninstall the channel version you have first, but I always do when updating something. unfortunately, apps and games seem to have no logical sorting mechanism in system settings, so you'll have to look for it. if it's just on the sd card, replace the contents with the updated version's.
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btw, with the channel version, it depends on if it's a forwarder. if it's a forwarder, then the sd card version needs to be changed.