I use BT-410 & BT-410 Dongle connecting my PC(WIN10) to program my openCM9.04 for Darwin-Mini.
Default group always stop at 99% and show error.
But I create a new group and put some index, it success.
I tried to recovery openCM9.04 firmware and get the same results.
This board is the new one not the older.
Please see my attachment.
Thank you for attaching the video.
It was so much easier for me to find out the problem.
When you are using BT-410 Dongle, please select the Dongle option as shown below.
WOW.....I never noticed that option....it worked !!
Thanks for help :)