I found it, new and working oscam for amiko mira x his 4300 and mirax 3000 here:
Amiko mirax his 4300 oscam.rar
Guide:
Put hi_oscam_plugin folder into your USB drive.
Attach the USB drive into amiko
Power OFF and power ON amiko, now the screen should appear if you want to install oscam, click OK.
Now you got oscam, go to settings and click oscam and then info button to see IP address and you can connect thru browser
