Go into settings, date& time, click off auto time at the top, change the date below the auto time to 1 month ahead, reboot your phone, it should come back in a few minutes after power up.
If that doesn't work power down the phone, press power and volume down at the same time, give it a few seconds, use the down volume button to scroll down to recovery. Use the power button to choose recovery. Once the screen goes black but a red triangle shows up press the power and volume UP at the same time , use the volume down to scroll to delete data partition, use the power button to choose it,once it's done use the volume down to scroll down to reboot device and use the power button to choose it.
It should be ready once again to receive the update, your data error should be gone as well.
Mine got stuck in a bootloop on the fifth attempt and ended up doing a data wipe. I lost my settings and all apps I'd installed but everything else (photos, music etc) didn't get wiped and the phone is as snappy and awesome as it was on day 1 of ownership and it still doesn't have the new update. No more reboots so far
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