Brain 2 BT failed firmware update.
Brain2 BT tried to update to 3.4.086 via bluetooth. The update failed and now appears to be stuck at the bootloader, however an update always fails.
When connected via micro usb to the PC the red LED comes on solid after 4 seconds and the unit is detected by the PC. Starting the software it will find the unit in bootloader mode and say the firmware must be updated. I've had this happen before with other units and was able to update them no problem.
However with this one when I click the "Upload Now" button it will go to the Firmware progress screen and then pop up a box that says "The Firmware update process cannot start due to a Communication problem between the Flight Control Unit and the software". At the same time the progress bar for "Initializing" will count to 100% and then everything stops. If I click on on the pop up error box the software exits. I've tried this over and over many times and with different computers and USB cables(that all work fine with my other units).
I've attached a picture of the error, you can also see the serial # and bootloader versions. This unit was working fine before the attempted firmware update.
I've tried the jumper to force the bootloader, the red LED still turns on after 4 seconds and the same error is present. Is there some firmware you can provide or a reset sequence to get the new firmware loaded?
1.7 is the bootloader version, not a firmware version. 1.7 is the current bootloader in all Brain2's I have.
My bad I wasn’t even thinking. Insert foot in mouth. I just glanced at number in the pic.
Have you tried to update after disconnecting everything from the flight control unit (Receiver, ESC, all servos, etc.)?
Have you tried using another PC (sometimes installing new programs, new drivers are installed that can have strange behavior with some unit and not with other)?
Nothing is connected to the flight controller. As I mentioned several computers have been tried, all with the same results.