Open the KSU sub-cover, hold the , and power the system on.
The Windows-based application used to program and manage the system. SL1000 PCPro v3.00 is a widely used version compatible with V1.20 firmware.
The core operating system for the SL1000 KSU. Common versions include V1.20 and newer regional releases like R7.20.00 (EU) . nec sl1000 firmware download
Connect to the system via IP or USB, and navigate to the Maintenance or Unit Info tab to see the active firmware build. The Firmware Update Procedure
Choose to run the update or schedule it. Note that the system will reboot and drop active calls during this process. Method 2: Using a Compact Flash (CF) Card Power off the system. Open the KSU sub-cover, hold the , and power the system on
With the handset on-hook, press Enter (Navigation key) and dial 821 . The screen will display the Main Software Version (e.g., Main Ver.: 07.00 ).
Copy the firmware data to a CF Card and insert it into the memory slot. The core operating system for the SL1000 KSU
Browse and select the downloaded firmware package (usually a .ymc or .bin file).
Required if you are managing DT700 or DT900 series IP phones connected to the system. How to Check Your Current Firmware Version
Wait for the to flash red, then power off and remove the card before restarting normally. Why Upgrade Your Firmware? NEC DT700 Firmware