Hi @PhilesG!
That's good to hear, though a bit concerning that it doesn't work with all flash drives. I'm not sure what we can do about that, but we'll have a look at it again.
The size limit in the web interface is unfortunately inserted quite deep into the system; essentially it's the amount of memory-mapped drive space that is reserved for holding the file sent over the network. Which is also why the flash drive method works, as the file is instead stored on the drive.
At any rate - glad you managed to get it to work!