Seems that there was a hidden file on my USB called "System Volume Information". This prevented the TV from picking up the firmware. They provided me with the same firmware version as @CyberStorm.
Good day. Can you please provide me with a link where I can download the latest firmware for my Hisense 43A6100UW (Current: VA001.01.00a.I0730)? The one on the website doesn't work.
Thank you.