Did your mod come with instructions? On the manufacturer website it has a manual, it specifically says not to tamper with the device because it will void the warranty. You could have contacted the store you bought it from and either had it repaired or replaced. Never open a mod that has an internal battery! Especially if you know the battery still has some charge left in it. That specific model is supposed to have a safety feature that shuts itself down when there is a short. From what you described, the mod did not shut down and reset. Instead it broke the micro processor inside. Sorry if this sounds like a scolding or I told you so. You learned a lesson and I am hoping that others will learn from this and not open sealed mods!