After reading the password of the chip, key can became unuse status, key has to be placed in ignition to become used again. This can take many hours. So using battery support is recommended.
Click “Identification key” and VVDI MB soon read NEC V57 key info successfully! Key number is 1. Then click “Renew” button to virgin NEC V57 key. Wait a while key erasing complete 100% and success!
How to place key NEC chip to adaptor via read/write/renew key via NEC adaptor