After completing the firmware upgrade:
NEC releases firmware updates as bundled files (often with a .bin , .rom , or .exe extension) that are loaded via specialized software like (NEC’s proprietary programming tool) or via a USB memory stick directly on the SL1000’s CPU card.
. Technical support and updates for these on-premise systems are scheduled to end by March 31, 2026 United Telecoms Method 1: Manual Upgrade (via CF Card)
