Access ControllersACC-AP226 | 38 A6V111645502.3.8 Platform Upgrade via Firmware DownloadBefore attempting to perform a platform upgrade via Firmware download, ensurethat you are using:● Platform version V1.0.6 (or later) and● AP Application Version V2.75.11 (or later)If using an earlier platform version, you must perform the platform upgrade via SD-Card to upgrade to platform version V1.0.6 or later. The SD-Card for platformV1.0.6 will also contain AP application version V2.75.11.For more details see the Common Firmware Update Procedure [➙ 11] section.2.3.9 LED Indications2.3.9.1 During SD Card UpdateLED Indication DescriptionRED – On Siemens bootstrap and u-boot runningORANGE – Flashing NAND Flash update is in progressGREEN – Flashing NAND Flash update finished, SD card shutting downORANGE – On ● SD-Card shut down. Count to 7, remove power, remove SDcard, restart.● After SD-Card removal – ACC-Application runningRED - Flashing Update failed. Retry SD-Card update2.3.9.2 During ACC-Application (Run-Time)LED Indication DescriptionRED Controller is starting upORANGE Application runningGREEN Application running, connected with SiPass integratedOFF (Dark) Application not running. (This can occur during a Firmwareupgrade.)