Hey there, sorry your kit is misbehaving. The Mintronics blinky kits were originally sold to Microcenter and Radio Shack, so maybe Princess Auto picked them up for cheap during the Radio Shack firesale? There is no new firmware, but I'm sure we'll be able to get it working for you.
Brightness needs to be at 100% for any device, since some displays use a high-speed switching to reduce the brightness that totally messes up the blinky programming process.
Take a look at the animated programming guide:
What is the first step where your Blinky kit differs in behavior from the guide? In step 7, does the second LED flash regularly as the on-screen squares flash? In general, if the led doesn't flash regularly during programming, then that indicates an issue with reliable data reception by the clock sensor. If you get regular led flashed during programming but checksum errors at the end, that indicates an issue with the data sensor.
Please give it a try with a really long delay value like 500, and see if it works then.
Please attach a photo of the top and bottom sides of your kit if you can. Let me know if the forum prevents you from uploading images.