Just joined the forum because I'm having the exact same problem, except my reset goes back to May 27, 2012. I can delete text messages, apps, data, pics, everything... and after the reset it all comes back as of that date. Also unrooted and on stock ROM.
Spent an hour on the phone with Sprint and the rep (who was thankfully very nice and helpful) was also stumped. Going thru the UI results in a powerup followed by an Android character icon with an attention symbol ("!" in a triangle) over its head that never goes away (at least not while my patience lasted). Going thru the fastboot menu method (power and volume-down; apologies if I've got the terminology wrong), it seems to reset just fine but only back to May 27. I haven't taken it to the Sprint store (fwiw) or run it over with my car yet.
Anyway, you are not alone, n_thacker, and any help would be very welcome and appreciated.
Thanks!
Just joined the forum because I'm having the exact same problem, except my reset goes back to May 27, 2012. I can delete text messages, apps, data, pics, everything... and after the reset it all comes back as of that date. Also unrooted and on stock ROM.
Spent an hour on the phone with Sprint and the rep (who was thankfully very nice and helpful) was also stumped. Going thru the UI results in a powerup followed by an Android character icon with an attention symbol ("!" in a triangle) over its head that never goes away (at least not while my patience lasted). Going thru the fastboot menu method (power and volume-down; apologies if I've got the terminology wrong), it seems to reset just fine but only back to May 27. I haven't taken it to the Sprint store (fwiw) or run it over with my car yet.
Anyway, you are not alone, n_thacker, and any help would be very welcome and appreciated.
Thanks!