HTC one M7 At&t software update failed phone Red triangle

[owwstin]

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?

 

[B. Diddy]

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]

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) )

 

[B. Diddy]

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.

 

[vidya123]

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

 

[vidya123]

I tried all scenarios like clearing cache .. factory reset .. reboot etc .. no luck