My system is at 4.82 model CECH 2001A/B PS3 slim and for some reason, when I go to update, the system auto-detects 4.86 and doesn't give me the option to download via usb storage. Yes it's formatted to FAT32. I have disconnected my ethernet cable and removed all information for wireless to be picked up. Some advice or ideas for troubleshooting would be greatly appreciated.