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Help OTA failed. Factory reset failed, keeps rebooting

After the first application of the OTA, you need to go back into recovery (which is now entered by using vol up + power) and then apply the OTA again. It's a two-stage step. The first stage installs the new recovery. Then it reboots and then you have to apply the OTA again to continue onto the second stage.

If you took the OTA directly and had it apply it itself, it would do all of this for you. However, for some, they applied the OTA with a modified system (root, etc) which pretty much borks the install process.

The link given above can help those that have borked their phone whether they automatically applied the OTA or did it manually.

Those that did it manually have it saved to the external SD card, so you can just go back to the recovery after the reboot and then apply it again and all should be golden.

Beware, if you have a locked bootloader, you WILL lose root. There is no way to carry root over the OTA nor is there a root exploit for Kit Kat. Only those with unlocked bootloaders can root their Kit Kat phones or downgrade to JB.

Those with locked bootloaders are pretty much SOL.
 
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