Future work: Sony could improve the process by supporting exFAT universally and displaying an on-screen file system checker before attempting update.
Use FAT32 with a 16 kB or 32 kB allocation unit size. Drives with 4 kB clusters have been reported to cause “No update file found” errors. sony tv software update usb
Now that the file is ready, head over to your TV. Future work: Sony could improve the process by