Schmid & Partner Engineering AG Zeughausstr. 43 CH-8004 Zurich, Switzerland http://www.speag.swiss support@speag.swiss Dear valued customer, The "DAK_installer" from the download site https://www.speag.swiss/downloads/dak/dak-download/ contains DAK V_2.6.1.1, i.e., the latest software for all our DAK systems (DAK/DAKS/DAK-TL). IMPORTANT: We kindly recommend to carefully follow the steps described in this ReadMe file to ensure a smooth and successful installation of all software components. NOTE: It is not necessary to uninstall the previous software version of your DAK system. The current installer provides a complete installation of the new software by saving it in a separate directory to your system local hard disk. STEP 1: DAK (DAK/DAKS/DAK-TL) software installation The software version number can be verified in the Help/About-menu. The version will show as V2.6.1.1 after a successful installation. STEP 2: DAK-TL Firmware Upgrade For firmware version 0.59 or above, please refer to the latest operation manual section 2.1.5.3 for further upgrade instructions. For firmware older than version 0.59, please return the unit to SPEAG in Zurich as the main board needs to be replaced for a firmware upgrade. The upgrade is free of charge. Please contact support@speag.swiss for further details. STEP 3: Read the new application notes to get familiar with the revised workflows for more accurate dielectric measurements before using the systems In case of additional questions, please do not hesitate to contact us by e-mail at support@speag.swiss. Kind regards, The DAK development team