@Meheperdido
Loading cure firmware is useful for a device that has been 'soft-bricked' by a corrupt file. Cure fw has no effect other than to allow a device which cannot fully boot to have Mass Storage Mode re-enabled so that bad file/s can be removed or the device's visible internal memory properly re-formatted.

Nor does clearing user data or clearing non-volatile memory do anything to allow use of unlocked maps as asked originally.

Or are you referring to other posts which report "System Software Missing" message? That problem is fixed by re-flashing original fw as an RGN file.