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Jul 11, 2011 at 19:45 vote accept Nathan Fellman
Jul 11, 2011 at 16:27 history edited eldarerathis CC BY-SA 3.0
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Jul 11, 2011 at 16:01 comment added Matthew Read Ah OK, that's good :P
Jul 11, 2011 at 15:31 comment added eldarerathis @Matthew: CM doesn't wipe /data (or /cache to my knowledge) when you install it, only /system, but it restores Google apps on /system if you already have them. It's pretty much like an OTA in that regard (settings, contacts, Market apps, etc are retained). I'm not sure exactly what OTAs to do /system, though, so I don't know how different that is.
Jul 11, 2011 at 15:15 comment added Matthew Read I use a custom ROM called Bionix and new versions, even minor updates, wipe most everything. CM sounds like it wipes too, it just has built-in restore of some apps. I'm not sure this is exactly what Nathan's looking for, it sounds like he's looking more for an OTA-like update that normally does no damage.
Jul 11, 2011 at 14:00 comment added eldarerathis @Nathan: I can't speak for most ROMs, then, since I've been using CM for a long time, but as noted above, CM does fall into this category. The only exception is moving between major versions (like 6.x to 7.x) since they change the base Android version at that point. I suppose you could always try making a backup and updating a ROM you're interested in without wiping. If it works, great! If not, restore and try another.
Jul 11, 2011 at 13:56 comment added Nathan Fellman I haven't tried it yet. I want to know if there are versions I should avoid.
Jul 11, 2011 at 13:48 history answered eldarerathis CC BY-SA 3.0