Siglent> Service and Support> Firmware & Software> DC Electronic Load Firmware and Software Downloads SDL1000X/X-E Series Programmable DC Electronic Loads Firmware View Release Notes SDL1000X_X-E Firmware – 1.1.1.21 (Release Date 05.09.20 ) Download SDL1000X/X-E Firmware 1.1.1.19R1 (Release Date 06.18.19 ) Download Software EasySDL-V8.5 (Release Date 09.30.20 ) Download Drivers SDL1000X/X-E LabVIEW Driver (Release Date 05.09.20 ) Download