Hi Redbandit, did you find a fix for the problem with the SD Cards and the G Pad? If not I think I have the solution, I have two of these 8,3's and after I updated the OS to KitKat 4.4.2, by way of the "update" dialog on the device, neither of them would keep a working 64gb SDXC card running for more than 18 hours, then it would show as needing to be formatted and sometimes as simply needing to be "mounted", but would not actually mount until the card was erased completely. This all eventually killed on of my new Samsung EVO 64GB Micro SDXC class 10 cards completely, which is not a cheap card to have die after only 5 days. But I think I have found the origin of the problem and the way to correct it. I opened the LG PC Suite on my PC and went to the area "Mobile Device" which is where you can do "Update" for the OS, but directly below that choice is one that reads "restore or correct Update Errors" and this is what I think fixed the problem that originated from Updating "OTA" because that was the result for TWO G Pad 8.3's. I have to say that it took only 20 min for the first one the complete the process, but the second one was very different, as I had to keep re-running the update / repair dialog at least 10 times, at times between re-boots and finally it took and the SD Card appears to be stable, at least it does thus far! If you have any questions I will answer anything I can... good luck. Daniel