I tried what they said formatted to exfat as the drive is too big for fat32 it seems, I do not have the choice to format to anything other than exfat. Anyone know what I can try next?Did you ensure they were formatted as as FAT16 or FAT32? Pages 324 through 340 in the manual give specifics on the requirements for everything to work properly.
FAT32 supports up to 2-16 TB (depending on specifics, but 2 TB is a safe value), which is extremely unlikely to be larger than your USB drive. That said, apparently Windows will only offer (in the GUI) to format drives up to 32 GB in size as FAT32. It looks like you can either use the command line to format the one you have as FAT32, or you could get a 32 GB or smaller one and use that instead. (You can use the larger one you got for backups, if you aren't already backing up your computer to something else.) I have tried with a 32 GB USB drive formatted as FAT32 in my RAV4 and that worked fine. As an approximation, 128 kbit/s (which gives decent audio quality with MP3) is about 1 MB/minute of audio, so a single 32 GB drive will hold about 30000 minutes or 500 hours of audio at that bit rate. (I haven't seen any MP3 encoder that went above 320 kbit/s, or about 200 hours in 32 GB.) 32 GB USB thumb drives are practically a dime a dozen these days; without even shopping around, I found brand new ones at about $4 apiece plus shipping and tax.I tried what they said formatted to exfat as the drive is too big for fat32 it seems, I do not have the choice to format to anything other than exfat. Anyone know what I can try next?