When the W202/W204/W207 ESL damaged, you will need to use the VVDI MB NEC ELV adapter to works together with VVDI MB BGA tool to renew, then use MB BGA tool to reprogram key.
VVDI MB Toolcomes with adapters for NEC or Motorola from ESL/ELV unit....
Here is an ESL/ELV NEC adapter i have ...
tested many time...all ok
have read password from nec 51
also from eis w203 with hc908 read pass via ir .
EDIT: today tested 2 pcs of used/locked ELV from W204....both are now unlocked...