======HOW TO ERASE THE FLASH MEMORY AND UPLOAD NEW FIRMWARE====== **Symptoms:** How to erase the flash memory and upload new firmware * Unable to upload new firmware * Flash memory corrupted Cannot access the CLI (Command Line Interface) **Facts:** SuperStack II Remote Access System 1500 * Firmware * Flash memory **Fixes:** To erase the flash memory and upload new firmware follow these steps: //WARNING: Be sure not to power off the unit during this procedure// **1.** Start a terminal program supporting Z-Modem/SDL2 (for example, Microsoft Windows Hyperterminal) (For more info please refer to 3KB document How to access the CLI using Microsoft Windows Hyperterminal ) **2.** Reboot the RAS1500 by typing 'reboot' and confirm this by typing 'y' **3.** When the unit displays 'Initializing...' press the 'ESC' key 3 times within 2 seconds **4.** When the 'SDL2 is ready' message and the menu are displayed, type 'AT{E}' and press 'enter' within 5 seconds to erase the flash memory The unit will now erase the entire flash memory and then reboot **5.** When the unit displays 'initializing...' press the 'ESC' key 3 times within 2 seconds **6.** When the 'SDL2 is ready' message and the menu are displayed, type 'AT{Z}' and press 'enter' 'Begin download now' is displayed **7.** From Hyperterminal use the Z-modem protocol to send the file 'rasboot.dmf' to the RAS1500 **8.** When the file is successfully downloaded, the RAS1500 will reboot **9.** After rebooting, when the unit displays 'Initializing...' press the 'ESC' key 3 times within 2 seconds **10.** When the 'SDL2 is ready' message and the menu are displayed, type 'AT{Z}' and press 'Enter' The message 'Begin download now' is displayed. **11.** From Hyperterminal use the Z-modem protocol to send the file 'ras1500.dmf' to the RAS1500 **12.** When the file is successfully downloaded, the RAS1500 will reboot **13.** Let the RAS1500 finish its reboot this time. It will startup at the Quick Configuration process. **14.** Go through the Quick Configuration to reconfigure the RAS1500. (recommended: answer 'no' to the question asking whether you'd like to only configure enough to use the web interface) ----------------------------- * Product(s): SuperStack II Remote Access System 1500, SuperStack 3 Remote Access System 1500 * Sub Product(s): SuperStack 3 Remote Access Server 1500 --- //[[nce@itclatam.com|David Gonzalez]] 2021/04/09 12:23//