Bafang M300/ MM G360.250 motor. trying to install lcd display

[seksognitti]

Hello, im trying to change from the original dp e10.u "display" to c965 a0248 bf1.0 v5.0 but i get error code 30. and its driving me nuts iv checked every wire and connection. my bike does not have throttle or brake sensors wich i think might be the fault


Anyone got any tips ?