SECTION 2 MAIN SOFTWARE UPGRADING2.1 GeneralThe main system software is initially stored in the Flash memory located on the CPU-C1 board of theMain Chassis. It can be upgraded by the new software on the SD card.2.2 Before Upgrading the Main SoftwareNEC recommends that a backup of the customer data is performed beforeupgrading the main software (either PCPro file or SD card backup).Before upgrading the main system software, the following preparations are necessary.• Prepare the SD Card (1 GB, or upwards and formatting by FAT), and store the new main softwareon the SD card by PC. (New main system software is supplied by NEC.)The Formatting of the SD card will be used SD Formatter. It is supplied by SD Association.2.3 Main Software Version ConfirmationThe main system software version is confirmed by the following operation at the display type MultilineTelephone.The following steps assume that program 15-02-60 is set to Advanced 1 or Advanced 2. If set to Standardthe operation is as follows:1. On-hook Condition.2. Press Enter Key (Navigation Key).3. Press “3” On Keypad to show the Main System Software version and Hardware Key Code.1. On-hook Condition.TUE18 7:27PM200Figure 4-8 Display of Multiline Telephone (12TXH/24TXH-A1)11-10 WED 1:49PM200Menu Dir VM:00 CL:00Figure 4-9 Display of Multiline Telephone (12TXH/24TXH-B1)ISSUE 1.0 SL2100Hardware Manual 4-5
