This Lonsdor is verified to work no issues with CAS2, CAS3, CAS4, CAS4+ and FEM/BDC.

Lonsdor K518ISE CAS2/CAS3:

Program key

Disable and enable key

Synchronize ELV

Synchronize DEM

Update CAS3

Backup and recovery

Clear fault codes

Clear shadow

Force to recover CAS

Make key with EEPROM data

Lonsdor K518ISE CAS4/CAS4+:

Make ignition key

Disable key

Enable key

Lonsdor K518ISE FEM/BDC:

Read key info

Preprocess FEM/BDC

Make dealer key enable key

Disable key

Delete key

Source:

http://blog.obdexpress.co.uk/2018/02/27/lonsdor-k518ise-works-with-bmw-fem-bdc-cas/