All the documentation and binaries in 'bootloader/' are outdated. They date from the 1st version of the bootloader that has been replaced by pinetime-mcuboot-bootloader 1.0.0 since June 2021. None of those docs and binaries have been maintained since then. The Python script dfu.py is also unmaintained.
I removed this folder and fixed the links in other documentation files to redirect to the actual project page (https://github.com/InfiniTimeOrg/pinetime-mcuboot-bootloader). I also updated a few links that pointed to the old URL (https://github.com/JF002/pinetime-mcuboot-bootloader).
I also removed all mentions to NRFConnect as it is not supported anymore, and they would confuse users.