1. owwstin's Avatar
    Hello, So this morning my phone automatically decided to go through the At&T software update without my consent and got to 100% and froze without completing. (I waited about a half hour) I powered it off and when I turned it back on the red triangle pops up and then it will restart itself in a seemingly endless loop. Any ideas?
    05-30-2015 01:02 AM
  2. B. Diddy's Avatar
    Welcome to Android Central! Try wiping the cache partition, if you can: https://support.t-mobile.com/docs/DOC-6526

    Since it was AT&T's official update, it's worth taking the phone to your local AT&T store, showing them what their update did to your phone, and asking them what they can do for you (since it was their update that caused the problem).
    owwstin likes this.
    05-30-2015 01:36 AM
  3. owwstin's Avatar
    Thank you for the response. I tried clearing the cache still same problem. I noticed on the blue screen that pops up at the bottome it says " Mount sdcard failed can not mount sd card (no such device) )
    05-30-2015 02:28 AM
  4. B. Diddy's Avatar
    I would guess that the system update installation glitched in a major way. The other possibility is some hardware failure, but that would seem oddly coincidental with a system update.

    I don't know of any easy way to correct this--I would still suggest contacting AT&T about the faulty update.
    05-31-2015 12:05 AM
  5. vidya123's Avatar
    even I had the same problem.. I got update form ATT and after that I am seeing the error.I called the customer care and went their store .. no help .. Please let me know how do fix this myself
    05-31-2015 09:34 PM
  6. vidya123's Avatar
    I tried all scenarios like clearing cache .. factory reset .. reboot etc .. no luck
    05-31-2015 09:36 PM

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