| 摘要 |
A system and method are provided for updating a non-volatile memory (NVM) in an image forming device by employing the programmability of an electronically readable/writable memory module such as a customer replaceable unit monitor (CRUM) associated with a customer replaceable unit (CRU) as a vehicle for completing the needed updates in NVM values at the time of replacement of the CRU. Replacement of the CRU, where such replacement is verified by return of an expended CRU to the manufacturer, provides confirmation of updates to the NVM values. The CRUM provides a secure means to change image output terminal (IOT) set points and CRU related values stored in NVM locations that otherwise would require a manufacturers' customer service personnel visit to update. By providing an NVM location (chain/link), the value to be used and a one-time use authentication string, an automated update to the NVM is performed in a secure manner. |
