FionaWonder if with #Yocto 6 release they'll finally have time to merge my bmaptool bugfix that's been marinating for a year by now. 
https://github.com/yoctoproject/bmaptool/pull/52
https://github.com/yoctoproject/bmaptool/pull/52
Resolve symlinks in device path for removable check by airtower-luna · Pull Request #52 · yoctoproject/bmaptool
When running with --removable-device, the basename of dest is used to construct the path of the "removable" sysfs file for the device. However, if dest is a symlink the basename may be ve...