xxx xxx xxx xxx xxx x
Does anyone recognize what this backup code is and can tell me how to use it?
This code is for an old style paper (PDF) backup. If you have it, look for the encrypted key QR code in it, scan it with Mycelium, and it will ask you for this code. This code is useless without the printout or PDF.
If you cant find the printout, chances are you may still have the PDF somewhere, as it was generated at the same time as this code. The file name pattern is mycelium-backup-*.pdf, where * stands for the date and time. It may even be somewhere on an SD card or some data partition which is not cleaned by a factory reset.