Security - Nokia RH-53 Manual
System module
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Also See for RH-53:
- Troubleshooting instructions (72 pages) ,
- Service tools (12 pages) ,
- Instructions manual (218 pages)
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RH-53/54
Nokia Customer Care
8-System Module
Security
The phone flash program and IMEI code are software protected, using an external security de-
vice that is connected between the phone and a PC. The security device uses IMEI number
(IMEI is stored in UEM non-volatile memory cells), the software version number and a 24bit
hardware random serial number that is read from the UPP, and calculates a flash authority
identification number, that is stored into the phone (emulated) EEPROM.
32
COMPANY CONFIDENTIAL
ISSUE 1 09/2004
Copyright © 2004 Nokia. All Rights Reserved.
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