My Note 4 will not recognize the SD Card since update to N910VVRU2BOF1. Just says "preparing SD card". I have tried another SD Card, Safe Mode, and Several Reboots. This is looking like a somewhat common problem, also on the S5: https://community.verizonwireless.com/mobile/mobile-access.jspa#jive-content?content=%2Fapi%2Fcore%2...
Hello there, Jeberoo. It's odd that your device is having difficulty reading the SD card. I regret that have had to put forth such an effort to resolve this. I can see that you've already attempted Safe Mode and reboots. Have you also attempted a factory reset? If not, I recommend it. The steps you'd need to take are here: http://vz.to/1Ds2tEZ. Be sure to back up your personal data before processing a factory reset, as the procedure does purge all personal information.
If that doesn't do the trick, you may also consider taking the device to the nearest corporate retail store for inspection. Locations can be reviewed using this link: http://vz.to/QafoJ0
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