Rover 25 2003 lost key + EKA code

[Sasika]

Hi guys,
I need help for this car.
Lost all keys. After door opening the alarm was ON
The eka code is 4857.
I entered it and the alarm stopped.
After that I waited 10min, open the door but the car not start (deep beep from the dashboard) and I can't program new remote because the immobiliser still active.
I tried the 4958 but still same
Any idea?

[fred77]

Is this pektron or Lucas?
pektron has round-ish keys - this you will have to remove immo box and do via eeprom. Box behind passenger climate unit. BTW be careful if car fitted with aircon. Maybe better to scrap car.

for Lucas try
https://remotekey.co.uk/rover-key-fob-replacment/rover-25/