Similar issue as the first person here. A bit different, I only used an sdcard, no ufs connected. Using the latest radxa image T6.
I used the patch method 1. On-device update.
My dragon does not boot anymore after patching with 2025_11_13 with the exact command line from my radxa T6. Not happy it seems i have no other option than to seek and purchase a specific USB cable to try and fix.
Please, be very detailed and specific in upgrade firmware procedure, there might be steps skip out of obviousness for you and we may have missed as people May not have as much understanding of firmware update for radxa dragon q6a because we simply just purchased and got one.