Firmware 4.1 or 3.1

Trying to remember what firmware version my dongle has to flash. It was recently purchased.

Update: Found the answer in the Getting Started document. Its printed on the board.

The board shows the hardware version - 2.1 is the Bluetooth Classic, 3.1 is the Bluetooth Low Energy (BLE) version, and 4.1 is the new BLE board not yet in production. The 3.1 board can be upgraded to 4.1 by sending it in for the upgrade but it will still how 3.1 on the board.

What is the address to send the adapter for upgrade?

It's on the order page.

I installed the driver and ran the firmware update receiving the message that the Firmware update was successful and to wait for the blue flashing lights. How long should I be waiting for it to update, it has been that way for quite some time now.more than 5 min, closer to 15. After 30, I did a repair and then a second update and it went blue flashing in seconds.

There are times that the adapter will stay red. If after 10 seconds, you can unplug the adapter and plug it back in. It should then start blinking blue.