We are not aware of a known S32K312 OTA issue that causes HSE services to remain permanently pending.
In general, every HSE service request should return a response. If no response is received, it may indicate that the HSE firmware encountered a fatal error and entered shutdown mode. In this case, we recommend checking the MU GSR register for diagnostic information.
Possible causes include invalid service parameters, invalid memory addresses, XRDC access violations, ECC errors, clock or initialization issues, resource conflicts, or other fatal HSE internal errors.
To help investigate, please provide the HSE FW version, the specific HSE service being executed, the service descriptor, and the MU status registers (FSR/GSR) when the issue occurs.
