Posted by Special thanks to Joe Finney for posting a workround to achieve reliable Bluetooth flashing of code to the Micro:bit.
- Flash micro:bit with a PXT compiled .HEX file that does not have Bluetooth enabled.
- Pair micro:bit with phone or tablet.
- Start Samsung micro:bit App
- Put micro:bit back into pairing mode.
- DO NOT try to CONNECT to micro:bit from Samsung App – it won’t
- Go straight to FLASH from Samsung App – it should work!
Making With Held 