Hai! I don't mean to necro this post or anything, but periodically i've been looking on information regarding corrupt towns in hopes to someday restore my town. I'm sure my villagers miss me T^T
But, I wanted to post because I wanted to sharethat my town became corrupt after 200+ hrs invested in it, and NOT by meddling with the DS power while it was saving. I have a physical copy and I rarely turned off the DS, so every morning after 7am whether I turned the game from sleep mode while outdoors in my village, or if left a house, the game would automatically save. On one of those instances I did precisely that.. I'd spend time at my house sometimes simply listening to my K.K. music collection, and when I stepped out of my house my game started saving automatically -- except it never stopped saving and it gave me an error asking me to restart X_X since it stopped responding after a while I restarted it. When I tried to load my town Isabelle warned me that the town should be deleted because it's corrupt. It was so depressing! So i've been checking periodically in the rare hopes that I can restore it............ maybe.
If not I was considering purchasing another copy and leaving this one as a relic. Though the idea of starting over just has a bitter taste after all the time I had invested! But I'm missing the October events and Jack........ I've been trying to forget about it by breeding in Pokemon. T_____T
TLDR: Not interrupting saves does not guarantee that the save will not be corrupted. It's best to maintain best habits of patiently waiting without meddling with the power, but for all you know it could all go bonkers one day
Sorry to hear that happened to you! The unpredictability of data corruptions scares me so much now
I'd probably switch to Pokemon myself if my town corrupts...