529 error, device remains busy, Thonny or Mu cannot access device

I am stucked completely.

Device is busy or does not respond. Your options:

  • wait until it completes current work;
  • use Ctrl+C to interrupt current work;
  • use Stop/Restart to interrupt more and enter REPL.

DAPLink Firmware - see https://daplink.io

Build ID: v0257-gc782a5ba (gcc)
Unique ID: 99063602000528204a19d635a2b99711000000006e052820
HIC ID: 6e052820
Auto Reset: 1
Automation allowed: 0
Overflow detection: 0
Incompatible image detection: 1
Page erasing: 0
Daplink Mode: Interface
Interface Version: 0257
Bootloader Version: 0257
Git SHA: c782a5ba907377658bc28aa8d132a0fa44543687
Local Mods: 0
USB Interfaces: MSD, CDC, HID, WebUSB
Bootloader CRC: 0x725bea7d
Interface CRC: 0xe561f1de
Remount count: 0
URL: https://microbit.org/device/?id=9906&v=0257


More details please?
The more details the more likely we can help!

What programming language & editor
What operating system?
Example of code that produces this error
Has this always happened or just recently?


In the meantime I have got the microbit working again by loading several hex files I have got from the internet.

I am not sure which one has cured my problem

Thanks any way to response.

Best reagrds,