The phone's display will show the (e.g., Main Ver: 07.00 ).
: Ensure you have the latest version of PCPro installed on your computer before attempting to connect to an upgraded system; older versions of PCPro may not be compatible with newer firmware.
: While on-hook, press the Enter key (Navigation key) and dial 821 to display the Main Software version and Hardware Key Code.
Access the system via its IP address using a web browser and log in with your credentials. nec sl1000 firmware upgrade
If a power failure occurs during CPU upgrade, the SL1000 may not boot. Recovery requires:
Once the new firmware is stored, the system resets and boots up. The CPU Unit attempts to switch over to the new firmware. However, there is a built-in failsafe: if the boot-up fails when switching to the new version, the CPU Unit can revert back to the old version. In the worst case, if a standard boot-up fails, the system may lock up, requiring the use of a Compact Flash card to copy the new Firmware to Flash Memory manually.
Locate the USB port on the main CPU card inside the NEC SL1000 main chassis. The phone's display will show the (e
The firmware image may be corrupted. If you used WebPro, you may need to use the Compact Flash method to recover the PBX firmware manually. Conclusion
A firmware update can occasionally reset IP-to-SIP trunk registrations. Check your SIP provider settings, and verify that your router's port forwarding and firewall rules haven't blocked the PBX following the restart.
: Once the flashing cycle finishes and the status indicator steadies, turn the power OFF , safely remove your CF card, and flip the system power switch back ON to resume normal operations. Method B: Software Upgrade (via PCPro or WebPro) Access the system via its IP address using
Before starting the upgrade process, you must gather the necessary tools and secure your existing system data to prevent permanent configuration loss. Required Tools
Continue holding the for approximately 3–4 seconds, then release it.
Test critical system features like Voicemail (InMail), Auto-Attendant, and SIP trunks to guarantee configuration integrity.
and connect to the SL1000 using the system's IP address and installer credentials (Default: : Before any upgrade, always back up your system configuration to avoid data loss. Environment Select the folder and path the new software file. Completion